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\/*start:ur9nhf*\/.css-ur9nhf.builder-block{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-flex-direction:column;-ms-flex-direction:column;flex-direction:column;position:relative;-webkit-flex-shrink:0;-ms-flex-negative:0;flex-shrink:0;box-sizing:border-box;margin-top:20px;height:2px;background-color:rgba(221,221,221,1);}\/*end:ur9nhf*\/ \/*start:1n465md*\/.css-1n465md.builder-block{height:0;width:0;display:block;opacity:0;overflow:hidden;pointer-events:none;}\/*end:1n465md*\/\u003c\/style\u003e\n\u003cdiv class=\"builder-component builder-component-da087b4f3d36447392178816565e7adf\" data-name=\"product-description\" data-source=\"Rendered by Builder.io\"\u003e\u003cdiv class=\"builder-content\" builder-content-id=\"da087b4f3d36447392178816565e7adf\" builder-model=\"product-description\"\u003e\u003cdiv data-builder-component=\"product-description\" data-builder-content-id=\"da087b4f3d36447392178816565e7adf\" data-builder-variation-id=\"da087b4f3d36447392178816565e7adf\"\u003e\n\u003cstyle data-emotion-css=\"h47494\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-blocks css-h47494\" builder-type=\"blocks\"\u003e\n\u003cstyle data-emotion-css=\"1t2m0n6\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-392de3ec145646ae82e2b36eadadc63d builder-has-component css-1t2m0n6\" builder-id=\"builder-392de3ec145646ae82e2b36eadadc63d\"\u003e\n\u003cstyle data-emotion-css=\"1840m1q\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-columns css-1840m1q\"\u003e\n\u003cstyle data-emotion-css=\"1ukkadj\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-column css-1ukkadj\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-392de3ec145646ae82e2b36eadadc63d\"\u003e\n\u003cstyle data-emotion-css=\"44qkma\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-2b330485e06f4356b431288106b229c5 builder-has-component css-44qkma\" builder-id=\"builder-2b330485e06f4356b431288106b229c5\"\u003e\u003cdiv class=\"builder-columns css-1840m1q\"\u003e\n\u003cstyle data-emotion-css=\"2keume\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-column css-2keume\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-2b330485e06f4356b431288106b229c5\"\u003e\n\u003cstyle data-emotion-css=\"hgfgng\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-729edd1b3a454701b6de2264b34c5508 builder-has-component css-hgfgng\" builder-id=\"builder-729edd1b3a454701b6de2264b34c5508\"\u003e\n\u003cstyle data-emotion-css=\"1qggkls\"\u003e\u003c\/style\u003e\n\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe A\u0026amp;ultima SP4000 DAP is Astell\u0026amp;Kern's new flagship digital audio player, delivering a sound experience that's refined, powerful, and remarkably close to perfection. As part of the A\u0026amp;ultima series–Astell\u0026amp;Kern’s flagship lineup combining cutting-edge technology and top-tier specifications—the SP4000 surpasses the boundaries set by the A\u0026amp;ultima SP3000 DAP, once regarded as the ultimate audiophile reference music player. From the portable KANN series to the flagship A\u0026amp;ultima line, Astell\u0026amp;Kern has consistently pushed the limits of what a DAP can achieve, and among AK DAPs past and present, the SP4000 represents the pinnacle of that pursuit.\u003c\/p\u003e\n\u003cp\u003eThe SP4000 DAP is the result of three years of relentless research and innovation following the development of the SP3000. Built upon an advanced Octa audio circuit architecture with true Quad DAC implementation, the SP4000 surpasses the boundaries set by the SP3000, delivering an exceptional 131dB SNR.\u003c\/p\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"bst442\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-column css-bst442\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-2b330485e06f4356b431288106b229c5\"\u003e\n\u003cstyle data-emotion-css=\"1y6p72u\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-fedff1a1d23249bd8daee7fbadd81206 css-1y6p72u\" builder-id=\"builder-fedff1a1d23249bd8daee7fbadd81206\"\u003e\n\u003cpicture\u003e\u003csource srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?format=webp\u0026amp;width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?format=webp\u0026amp;width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?format=webp\u0026amp;width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?format=webp\u0026amp;width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?format=webp\u0026amp;width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?format=webp\u0026amp;width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?format=webp\u0026amp;width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?format=webp\u0026amp;width=783 783w\" type=\"image\/webp\"\u003e\u003cstyle data-emotion-css=\"1hbf805\"\u003e\u003c\/style\u003e\n\u003cimg role=\"presentation\" loading=\"lazy\" class=\"builder-image css-1hbf805\" src=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?width=783\" srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Ff9bb7efbe33044edae85777f01ee6862?width=783 783w\" sizes=\"(max-width: 638px) 98vw, (max-width: 998px) 29vw, 56vw\"\u003e\u003c\/picture\u003e\u003cstyle data-emotion-css=\"l9e9xo\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-image-sizer css-l9e9xo\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1oq4jz5\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-4bf7ed35dcea404181e39665be5a9792 builder-has-component css-1oq4jz5\" builder-id=\"builder-4bf7ed35dcea404181e39665be5a9792\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThis is the first Astell\u0026amp;Kern product with full Android OS integration, enabling bit-perfect lossless streaming through proprietary ADP (Astell\u0026amp;Kern Direct Path) technology. The SP4000 introduces Advanced DAR (Digital Audio Remaster) with VSE technology for enhanced restoration, powered by a Snapdragon 6125 Octa-core processor with 8GB DDR4 memory. Crafted from 904L stainless steel–a first in portable audio–it features cutting-edge technologies including enhanced signal alignment for minimized group delay, Ultra Low Noise LDO Regulator providing 97% noise reduction, and a 99.9% pure copper Shield Can for superior electromagnetic shielding.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"ve2fsv\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-054ae2e8f7e24eae967c8e0d3746c557 css-ve2fsv\" builder-id=\"builder-054ae2e8f7e24eae967c8e0d3746c557\"\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1n068md\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-a3307bc719b44f6fa55819e6f36edc30 css-1n068md\" builder-id=\"builder-a3307bc719b44f6fa55819e6f36edc30\"\u003e\n\u003cpicture\u003e\u003csource srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F7e000dccd8b54692baef29795f93300f?format=webp\u0026amp;width=100 100w, 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https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F7e000dccd8b54692baef29795f93300f?format=webp\u0026amp;width=1585 1585w\" type=\"image\/webp\"\u003e\u003cimg role=\"presentation\" loading=\"lazy\" class=\"builder-image css-1hbf805\" src=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F7e000dccd8b54692baef29795f93300f?width=1585\" srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F7e000dccd8b54692baef29795f93300f?width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F7e000dccd8b54692baef29795f93300f?width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F7e000dccd8b54692baef29795f93300f?width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F7e000dccd8b54692baef29795f93300f?width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F7e000dccd8b54692baef29795f93300f?width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F7e000dccd8b54692baef29795f93300f?width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F7e000dccd8b54692baef29795f93300f?width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F7e000dccd8b54692baef29795f93300f?width=1585 1585w\" sizes=\"(max-width: 638px) 98vw, (max-width: 998px) 59vw, 114vw\"\u003e\u003c\/picture\u003e\u003cstyle data-emotion-css=\"1261can\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-image-sizer css-1261can\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1f9t3is\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-e30ced7ef9604d0ba475a6657357e951 css-1f9t3is\" builder-id=\"builder-e30ced7ef9604d0ba475a6657357e951\"\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"mycw3h\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-776808097b93421e8fa3697418d202c4 builder-has-component css-mycw3h\" builder-id=\"builder-776808097b93421e8fa3697418d202c4\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch2\u003eRevolutionary Audio Architecture\u003c\/h2\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-733322a86ac54ee2978334232c3a7ba6 builder-has-component css-mycw3h\" builder-id=\"builder-733322a86ac54ee2978334232c3a7ba6\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eTrue Quad DAC with Octa Audio Circuit Technology\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"8oj6bx\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-d427e86c4a354182932b2494e4ef2fb5 builder-has-component css-8oj6bx\" builder-id=\"builder-d427e86c4a354182932b2494e4ef2fb5\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe SP4000 portable music player marks a breakthrough in high-end portable audio engineering. While the SP3000 used a 1:2 digital-to-analog processing ratio, the SP4000 evolves to a precision 1:1 architecture. Each AK4191 digital processor pairs with a dedicated AK4499EX DAC, delivering digital signals directly without noise distribution. \u003c\/p\u003e\n\u003cp\u003eThrough continuous research and innovation in circuit technology, the SP4000 successfully implements a true Quad DAC—a feat previously considered impossible due to noise and other issues. As a result, the SP4000 achieves an impressive SNR (Signal-to-Noise Ratio) of 131dB, on par with the independent dual audio circuit of its predecessor.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"12qhxbn\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-fe2ac961b7914bbc8abaa85630ee0c6a builder-has-component css-12qhxbn\" builder-id=\"builder-fe2ac961b7914bbc8abaa85630ee0c6a\"\u003e\u003cdiv class=\"builder-columns css-1840m1q\"\u003e\n\u003cdiv class=\"builder-column css-2keume\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-fe2ac961b7914bbc8abaa85630ee0c6a\"\u003e\u003cdiv class=\"builder-block builder-a3bd2aa5229a49dbafec59cda03ad2c6 css-1y6p72u\" builder-id=\"builder-a3bd2aa5229a49dbafec59cda03ad2c6\"\u003e\n\u003cpicture\u003e\u003csource 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https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F9d3f0f6428c545899181f1c123ef78ca?width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F9d3f0f6428c545899181f1c123ef78ca?width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F9d3f0f6428c545899181f1c123ef78ca?width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F9d3f0f6428c545899181f1c123ef78ca?width=743 743w\" sizes=\"(max-width: 638px) 92vw, (max-width: 998px) 25vw, 54vw\"\u003e\u003c\/picture\u003e\u003cstyle data-emotion-css=\"17yw05i\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-image-sizer css-17yw05i\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-bbde34025d154b1ab0de8cf62fb6b869 builder-has-component css-mycw3h\" builder-id=\"builder-bbde34025d154b1ab0de8cf62fb6b869\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eHigh Driving Mode with Parallel OPAMP Configuration\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-febdcf0425eb4888a875621e180e930e builder-has-component css-8oj6bx\" builder-id=\"builder-febdcf0425eb4888a875621e180e930e\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe SP4000 features twice as many OPAMPs arranged in parallel compared to previous models, delivering richer and more detailed sound. The amp's High Driving Mode provides powerful and stable output—much like a four-wheel-drive vehicle confidently navigating rough terrain. It’s designed to reproduce even the most delicate sonic details with precision, allowing you to enjoy deeper, clearer, and more immersive music.\u003c\/p\u003e\n\u003cp\u003eUnlike OPAMP series configurations that increase noise while boosting power, the SP4000's parallel alignment expands the driving range horizontally with no noise increase or SNR reduction. This results in enhanced dynamic range, a wider soundstage, and superior sound detail.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1nqsvrq\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-f7bf53103ede45e7a4cf1e1e378fe52b builder-has-component css-1nqsvrq\" builder-id=\"builder-f7bf53103ede45e7a4cf1e1e378fe52b\"\u003e\u003cdiv class=\"builder-columns css-1840m1q\"\u003e\n\u003cdiv class=\"builder-column css-2keume\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-f7bf53103ede45e7a4cf1e1e378fe52b\"\u003e\n\u003cdiv class=\"builder-block builder-32377a040b774be1a9cb3339dffc2c40 css-1y6p72u\" builder-id=\"builder-32377a040b774be1a9cb3339dffc2c40\"\u003e\n\u003cpicture\u003e\u003csource srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?format=webp\u0026amp;width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?format=webp\u0026amp;width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?format=webp\u0026amp;width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?format=webp\u0026amp;width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?format=webp\u0026amp;width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?format=webp\u0026amp;width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?format=webp\u0026amp;width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?format=webp\u0026amp;width=783 783w\" type=\"image\/webp\"\u003e\u003cimg role=\"presentation\" loading=\"lazy\" class=\"builder-image css-1hbf805\" src=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?width=783\" srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F82efa2f08b1147988b5569b36e399446?width=783 783w\" sizes=\"(max-width: 638px) 98vw, (max-width: 998px) 29vw, 56vw\"\u003e\u003c\/picture\u003e\u003cstyle data-emotion-css=\"198yirj\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-image-sizer css-198yirj\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"qguwqq\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-ad79360fae5048be98f19a00fb048deb builder-has-component css-qguwqq\" builder-id=\"builder-ad79360fae5048be98f19a00fb048deb\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003e[OPAMP: Series Configuration]\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1249z7l\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-37b4af9b524a4452a9ed122d528fa2fd builder-has-component css-1249z7l\" builder-id=\"builder-37b4af9b524a4452a9ed122d528fa2fd\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eDriving range increases linearly, but with increased noise and reduced SNR. While the sound may feel more powerful, it tends to become rougher or harsher.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-column css-bst442\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-f7bf53103ede45e7a4cf1e1e378fe52b\"\u003e\n\u003cdiv class=\"builder-block builder-33d2f47f86134386ad9275a3f532c7a6 css-1y6p72u\" builder-id=\"builder-33d2f47f86134386ad9275a3f532c7a6\"\u003e\n\u003cpicture\u003e\u003csource srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?format=webp\u0026amp;width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?format=webp\u0026amp;width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?format=webp\u0026amp;width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?format=webp\u0026amp;width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?format=webp\u0026amp;width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?format=webp\u0026amp;width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?format=webp\u0026amp;width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?format=webp\u0026amp;width=783 783w\" type=\"image\/webp\"\u003e\u003cimg role=\"presentation\" loading=\"lazy\" class=\"builder-image css-1hbf805\" src=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?width=783\" srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fdf8315ce7a7f4be0b8320e0ea90e3abc?width=783 783w\" sizes=\"(max-width: 638px) 98vw, (max-width: 998px) 29vw, 56vw\"\u003e\u003c\/picture\u003e\u003cdiv class=\"builder-image-sizer css-198yirj\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-ac6e11badd0f4bd2878c51424c936cab builder-has-component css-qguwqq\" builder-id=\"builder-ac6e11badd0f4bd2878c51424c936cab\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003e[OPAMP: Parallel Configuration]\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-319486128eba462fa5239d1bb7f79cc5 builder-has-component css-1249z7l\" builder-id=\"builder-319486128eba462fa5239d1bb7f79cc5\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe driving range expands horizontally, with no increase in noise or reduction in SNR. This results in increased dynamic range and enhanced sound detail.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-36a2ec2e36424943bb7509992e0746bd builder-has-component css-mycw3h\" builder-id=\"builder-36a2ec2e36424943bb7509992e0746bd\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eESA Technology: Eliminating Group Delay\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"18y1byv\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-79879b0fc49d474ab322579771dfc6ca builder-has-component css-18y1byv\" builder-id=\"builder-79879b0fc49d474ab322579771dfc6ca\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eAstell\u0026amp;Kern's proprietary Enhanced Signal Alignment (ESA) technology addresses one of audio's most persistent challenges—group delay. ESA aligns frequency signals to arrive more uniformly, minimizing frequency distortion and dramatically enhancing sound clarity and purity. \u003c\/p\u003e\n\u003cp\u003eGroup delay occurs when different frequencies pass through a system at varying speeds, causing slight time differences that blur audio precision. ESA technology ensures all frequencies arrive simultaneously for pristine, coherent sound quality. \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"ytn4lx\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-c20e36965e3a46eaa5bbe4a9a5e15b1c css-ytn4lx\" builder-id=\"builder-c20e36965e3a46eaa5bbe4a9a5e15b1c\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-7b3e40467b0e49f1aa8c9c0fce45aa8e builder-has-component css-mycw3h\" builder-id=\"builder-7b3e40467b0e49f1aa8c9c0fce45aa8e\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch2\u003ePremium Hardware Engineering\u003c\/h2\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-1762cde7823c4300b6e964083d6df722 builder-has-component css-mycw3h\" builder-id=\"builder-1762cde7823c4300b6e964083d6df722\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eUltra Low Noise Power Supply\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1q8m96f\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-e9bd6f4be6a0455697f6f666f40cb4de builder-has-component css-1q8m96f\" builder-id=\"builder-e9bd6f4be6a0455697f6f666f40cb4de\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe SP4000 incorporates a newly implemented LDO (Low Dropout) Regulator that reduces noise by up to 97% compared to previous models. These high-performance components, typically reserved for precision medical devices and 5G communication equipment, stabilize battery voltage and effectively suppress noise for exceptionally clean, pure sound reproduction.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-ee2f362eb2794ae29af654675cbaa4cb builder-has-component css-mycw3h\" builder-id=\"builder-ee2f362eb2794ae29af654675cbaa4cb\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eAdvanced PCB Technology\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"py3n9i\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-7d8e61b5871e4fcf8fbd9e5f7ddd2614 builder-has-component css-py3n9i\" builder-id=\"builder-7d8e61b5871e4fcf8fbd9e5f7ddd2614\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eTo achieve maximum sound quality, the SP4000 DAP features top-tier Any Layer HDI (High-Density Interconnect) PCB technology. 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https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fa049e712ca6f4dd2a904bf7c8e5579ef?width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fa049e712ca6f4dd2a904bf7c8e5579ef?width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fa049e712ca6f4dd2a904bf7c8e5579ef?width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fa049e712ca6f4dd2a904bf7c8e5579ef?width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fa049e712ca6f4dd2a904bf7c8e5579ef?width=783 783w\" sizes=\"(max-width: 638px) 98vw, (max-width: 998px) 29vw, 56vw\"\u003e\u003c\/picture\u003e\u003cstyle data-emotion-css=\"1f225lp\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-image-sizer css-1f225lp\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-5696ffeb1eec4c3da9dcf106fe1359d8 builder-has-component css-qguwqq\" builder-id=\"builder-5696ffeb1eec4c3da9dcf106fe1359d8\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003e[ SP3000 Layer Structure ]\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-column css-bst442\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-eb92e3f616d14f9d901192794c84438a\"\u003e\n\u003cdiv class=\"builder-block builder-35683555eb3243228013db25240ab524 css-1y6p72u\" builder-id=\"builder-35683555eb3243228013db25240ab524\"\u003e\n\u003cpicture\u003e\u003csource srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?format=webp\u0026amp;width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?format=webp\u0026amp;width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?format=webp\u0026amp;width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?format=webp\u0026amp;width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?format=webp\u0026amp;width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?format=webp\u0026amp;width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?format=webp\u0026amp;width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?format=webp\u0026amp;width=783 783w\" type=\"image\/webp\"\u003e\u003cimg role=\"presentation\" loading=\"lazy\" class=\"builder-image css-1hbf805\" src=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?width=783\" srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fc678d05c83074cb9936491ce60d59174?width=783 783w\" sizes=\"(max-width: 638px) 98vw, (max-width: 998px) 29vw, 56vw\"\u003e\u003c\/picture\u003e\u003cdiv class=\"builder-image-sizer css-1f225lp\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-aa45b3095274415f94a5743d6d6bb429 builder-has-component css-qguwqq\" builder-id=\"builder-aa45b3095274415f94a5743d6d6bb429\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003e[ SP4000 Layer Structure ]\u003cspan class=\"ql-cursor\"\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-8c9e5d9dd71d4fdb96becbab29ac32af builder-has-component css-mycw3h\" builder-id=\"builder-8c9e5d9dd71d4fdb96becbab29ac32af\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003e99.9% Pure Copper Electromagnetic Shielding\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1jrh8q6\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-d6a9b30e364247b8b951f8f6d9d2c47b builder-has-component css-1jrh8q6\" builder-id=\"builder-d6a9b30e364247b8b951f8f6d9d2c47b\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eFor the first time in Astell\u0026amp;Kern's lineup, the SP4000 employs a precision-engineered Shield Can made from 99.9% pure copper. This advanced shielding blocks electromagnetic interference and various noise sources that could affect the audio block, delivering high-quality sound that is clearer and more distinct than ever before. \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1d71od7\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-4019e21810854b0b9e1309c8ec934fe9 css-1d71od7\" builder-id=\"builder-4019e21810854b0b9e1309c8ec934fe9\"\u003e\n\u003cpicture\u003e\u003csource srcset=\"https:\/\/cdn.builder.io\/o\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd8b2b5b0cddb4d3db54994e4db4516f3?format=webp\u0026amp;alt=media\u0026amp;token=e87dbd1e-4a0e-47b8-a2b2-c9e594340f59\u0026amp;apiKey=48d1cdcd52ec4d289f1ef8c4f75da167\u0026amp;width=100 100w, 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https:\/\/cdn.builder.io\/o\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd8b2b5b0cddb4d3db54994e4db4516f3?alt=media\u0026amp;token=e87dbd1e-4a0e-47b8-a2b2-c9e594340f59\u0026amp;apiKey=48d1cdcd52ec4d289f1ef8c4f75da167\u0026amp;width=1600 1600w, https:\/\/cdn.builder.io\/o\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd8b2b5b0cddb4d3db54994e4db4516f3?alt=media\u0026amp;token=e87dbd1e-4a0e-47b8-a2b2-c9e594340f59\u0026amp;apiKey=48d1cdcd52ec4d289f1ef8c4f75da167\u0026amp;width=2000 2000w, https:\/\/cdn.builder.io\/o\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd8b2b5b0cddb4d3db54994e4db4516f3?alt=media\u0026amp;token=e87dbd1e-4a0e-47b8-a2b2-c9e594340f59\u0026amp;apiKey=48d1cdcd52ec4d289f1ef8c4f75da167\" sizes=\"(max-width: 998px) 60vw, 115vw\"\u003e\u003c\/picture\u003e\u003cstyle data-emotion-css=\"om760b\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-image-sizer css-om760b\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-d60bd545cdf1410fa43b70d3d3407cc8 css-ytn4lx\" builder-id=\"builder-d60bd545cdf1410fa43b70d3d3407cc8\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-bf19869a252544699f0f840aae6386ca builder-has-component css-mycw3h\" builder-id=\"builder-bf19869a252544699f0f840aae6386ca\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch2\u003eNext Generation Software Integration\u003c\/h2\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1m69mu7\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-1f21c0624b384330bd49d7e66b388646 builder-has-component css-1m69mu7\" builder-id=\"builder-1f21c0624b384330bd49d7e66b388646\"\u003e\u003cdiv class=\"builder-columns css-1840m1q\"\u003e\n\u003cdiv class=\"builder-column css-2keume\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-1f21c0624b384330bd49d7e66b388646\"\u003e\n\u003cdiv class=\"builder-block builder-ef2e1f0edf7341f69ac8cb22a67b8ffd builder-has-component css-hgfgng\" builder-id=\"builder-ef2e1f0edf7341f69ac8cb22a67b8ffd\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eFirst-Ever Full Android OS Implementation \u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-159f3df52d374502bc2ba394c0e2c37d builder-has-component css-hgfgng\" builder-id=\"builder-159f3df52d374502bc2ba394c0e2c37d\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eAstell\u0026amp;Kern has overcome Android OS's inherent sampling limitations through proprietary ADP (Astell\u0026amp;Kern Direct Path) customization technology. This breakthrough enables bit-perfect, lossless playback even in streaming environments, ensuring the highest possible sound quality during music listening. The SP4000 delivers flagship-level audio quality while offering enhanced convenience, marking its evolution into a refined next-generation digital audio player. Enjoying hi-res audio has never been easier. \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-column css-bst442\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-1f21c0624b384330bd49d7e66b388646\"\u003e\u003cdiv class=\"builder-block builder-ccc47171dc454c9ea89d5c229f684722 css-1y6p72u\" builder-id=\"builder-ccc47171dc454c9ea89d5c229f684722\"\u003e\n\u003cpicture\u003e\u003csource srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?format=webp\u0026amp;width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?format=webp\u0026amp;width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?format=webp\u0026amp;width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?format=webp\u0026amp;width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?format=webp\u0026amp;width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?format=webp\u0026amp;width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?format=webp\u0026amp;width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?format=webp\u0026amp;width=783 783w\" type=\"image\/webp\"\u003e\u003cimg role=\"presentation\" loading=\"lazy\" class=\"builder-image css-1hbf805\" src=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?width=783\" srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F64fd4a5607c742bc8fa821395b37e917?width=783 783w\" sizes=\"(max-width: 638px) 98vw, (max-width: 998px) 29vw, 56vw\"\u003e\u003c\/picture\u003e\u003cstyle data-emotion-css=\"117jmou\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-image-sizer css-117jmou\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-cd1d9517eef6474e9105672789338903 builder-has-component css-mycw3h\" builder-id=\"builder-cd1d9517eef6474e9105672789338903\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eAdvanced DAR: Second-Generation Digital Audio Remaster\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"tyhjbo\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-db28e0cfcbf844a4907c35d5241e6df8 builder-has-component css-tyhjbo\" builder-id=\"builder-db28e0cfcbf844a4907c35d5241e6df8\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe SP4000 introduces Advanced DAR, Astell\u0026amp;Kern's enhanced Digital Audio Remaster technology that delivers more natural, refined sound than ever before. Rather than sending the audio file directly to the DAR engine, the SP4000 first uses VSE (Virtual Sound Extender) to virtually restore lost harmonics, enhancing the sound quality at the initial stage. \u003c\/p\u003e\n\u003cp\u003eThen, the advanced DAR engine performs a second-stage upsampling process with greater precision and completeness. This two-step approach allows listeners to enjoy a deeper, more immersive sound that comes closer than ever to the original recording.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1qj1bfe\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-865b1f77fe99469e9735a882274a996e css-1qj1bfe\" builder-id=\"builder-865b1f77fe99469e9735a882274a996e\"\u003e\n\u003cpicture\u003e\u003csource srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd965a4ebfb28484ca291ff0f535b0574?format=webp\u0026amp;width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd965a4ebfb28484ca291ff0f535b0574?format=webp\u0026amp;width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd965a4ebfb28484ca291ff0f535b0574?format=webp\u0026amp;width=400 400w, 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src=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd965a4ebfb28484ca291ff0f535b0574?width=1585\" srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd965a4ebfb28484ca291ff0f535b0574?width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd965a4ebfb28484ca291ff0f535b0574?width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd965a4ebfb28484ca291ff0f535b0574?width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd965a4ebfb28484ca291ff0f535b0574?width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd965a4ebfb28484ca291ff0f535b0574?width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd965a4ebfb28484ca291ff0f535b0574?width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd965a4ebfb28484ca291ff0f535b0574?width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd965a4ebfb28484ca291ff0f535b0574?width=1585 1585w\" sizes=\"(max-width: 638px) 98vw, (max-width: 998px) 59vw, 114vw\"\u003e\u003c\/picture\u003e\u003cstyle data-emotion-css=\"rmhty1\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-image-sizer css-rmhty1\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"dhhfsg\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-b73c74e0c9c741a1a60ff4d341ced705 builder-has-component css-dhhfsg\" builder-id=\"builder-b73c74e0c9c741a1a60ff4d341ced705\"\u003e\u003cdiv class=\"builder-columns css-1840m1q\"\u003e\n\u003cstyle data-emotion-css=\"1725ttl\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-column css-1725ttl\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-b73c74e0c9c741a1a60ff4d341ced705\"\u003e\n\u003cstyle data-emotion-css=\"1d0xof5\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-a0000495903140709874ffdfef36d2c9 builder-has-component css-1d0xof5\" builder-id=\"builder-a0000495903140709874ffdfef36d2c9\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003e[Lossy audio above 16kHz] \u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"16m31b8\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-column css-16m31b8\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-b73c74e0c9c741a1a60ff4d341ced705\"\u003e\u003cdiv class=\"builder-block builder-24ae042072d64073bfde8b7fd1e565cc builder-has-component css-1d0xof5\" builder-id=\"builder-24ae042072d64073bfde8b7fd1e565cc\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003e [Data restoration through VSE]\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-column css-16m31b8\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-b73c74e0c9c741a1a60ff4d341ced705\"\u003e\u003cdiv class=\"builder-block builder-1a33b33d9e6f4534bc42f92eff7859da builder-has-component css-qguwqq\" builder-id=\"builder-1a33b33d9e6f4534bc42f92eff7859da\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003e[DAR applied after data restoration]\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"rpnx64\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-d86955e971164e6c857d54f5f3f2d1da builder-has-component css-rpnx64\" builder-id=\"builder-d86955e971164e6c857d54f5f3f2d1da\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003eDAR Processing Options:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCM Mode\u003c\/strong\u003e: 44.1kHz range converts to 352.8 kHz, 48 kHz range converts to 384 kHz. No conversion will be made when playing DSD with this option selected\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSD Mode\u003c\/strong\u003e: PCM files under 96 kHz convert to DSD128, over 96 kHz convert to DSD256. DSD files below DSD256 will be converted to DSD256 for playback with this option.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e*The DAR function can be turned on and off and you may select it to suit the source sound and your own preferences.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e*Max PCM rate 384kHz\/DSD64 conversion play is supported, and the files will be converted to and played in the sample rates that fit the source sound.\u003c\/em\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-85438f99a8684fcd98e51268cfedcfc6 css-ytn4lx\" builder-id=\"builder-85438f99a8684fcd98e51268cfedcfc6\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-3fa599e8620d46f383f5a3c78fb16b6f builder-has-component css-mycw3h\" builder-id=\"builder-3fa599e8620d46f383f5a3c78fb16b6f\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch2\u003eHigh-Performance Processing\u003c\/h2\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-92d8088f2d184491a95c2c6afffb129f builder-has-component css-mycw3h\" builder-id=\"builder-92d8088f2d184491a95c2c6afffb129f\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eFlagship-Level CPU Performance\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"wtsd3w\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-3f41454107944ec8b19afedbb8e9f5fb builder-has-component css-wtsd3w\" builder-id=\"builder-3f41454107944ec8b19afedbb8e9f5fb\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe SP4000 is powered by a Snapdragon 6125 Octa-core processor delivering overwhelming sound quality, faster system response, and smooth user interference operation. Enhanced with 8GB of DDR4 memory–double the standard amount–the system provides stable, fast, and fluid performance.\u003c\/p\u003e\n\u003cp\u003eThe CPU, memory, and wireless communication parts are configured as one module, with the digital circuit parts arranged in the same area, creating a single system on a Chip (SoC). This maximizes the efficiency of the overall circuit configuration by providing more audio-only circuit space as well as reducing heat and noise from digital circuits.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-f217fade0be44503904175816dc8cb6c builder-has-component css-mycw3h\" builder-id=\"builder-f217fade0be44503904175816dc8cb6c\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch2\u003eEnhanced User Experience \u0026amp; Design\u003c\/h2\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-dd83ae9a109f4d8780cf738ae6605ed8 builder-has-component css-mycw3h\" builder-id=\"builder-dd83ae9a109f4d8780cf738ae6605ed8\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003e4.5th-Generation UI \u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"pspvzv\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-714f21aec95b43b78d859a7a0c03ea08 builder-has-component css-pspvzv\" builder-id=\"builder-714f21aec95b43b78d859a7a0c03ea08\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe SP4000 features an upgraded user interface that balances functionality with emotional engagement. The main screen includes immersive animations where LP albums appear to slide in and out as you swipe, transforming music selection into a visually engaging, tactile experience. The interface maintains Astell\u0026amp;Kern's signature Crimson theme, reflecting their brand identity in a refined, modern design.\u003c\/p\u003e\n\u003cp\u003eWith balanced 4.4mm and unbalanced 3.5mm outputs and a high-quality amplifier, the SP4000 is compatible with your favorite high-end audio products, from IEMs (In-Ear Monitors) and closed-back headphones to over-ear headphones, open-back designs, and earphones. The SP4000 pushes the boundaries of portable audio player performance with 256GB of internal memory with support for microSD cards up to 1.5TB, dual band 2.4\/5Ghz Wi-Fi, DLNA networking, USB digital audio output, USB-C for data transfer and charging, and the ability to use the SP4000 as a USB DAC for your Mac or Windows-based PC. The SP4000 adds support for both aptX Adaptive and LDAC codecs to provide audiophiles with multiple options for high-resolution 24-bit audio playback wirelessly to their audio system.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThe SP4000 is a Roon Ready and Roon Tested device.\u003c\/em\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1hnamhz\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-aea110725ac54c2aa3b0d0f0ef922618 builder-has-component css-1hnamhz\" builder-id=\"builder-aea110725ac54c2aa3b0d0f0ef922618\"\u003e\u003cdiv class=\"builder-columns css-1840m1q\"\u003e\n\u003cstyle data-emotion-css=\"smh346\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-column css-smh346\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-aea110725ac54c2aa3b0d0f0ef922618\"\u003e\n\u003cdiv class=\"builder-block builder-ac5fd4e90c12422d829f360a893a6759 builder-has-component css-qguwqq\" builder-id=\"builder-ac5fd4e90c12422d829f360a893a6759\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003eEdge\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1jbzerv\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-bdadfbc3447e42289369a40d296300bc css-1jbzerv\" builder-id=\"builder-bdadfbc3447e42289369a40d296300bc\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-e439632b49164e05ab2caf75144489aa builder-has-component css-qguwqq\" builder-id=\"builder-e439632b49164e05ab2caf75144489aa\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eClean, angular lines echo the device's physical design\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"9yr98l\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-column css-9yr98l\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-aea110725ac54c2aa3b0d0f0ef922618\"\u003e\n\u003cdiv class=\"builder-block builder-b824651a101d46628c5a6f80f88590cd builder-has-component css-qguwqq\" builder-id=\"builder-b824651a101d46628c5a6f80f88590cd\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003eSimple\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-d2ba2d2cba8f43f8a2e6d41cb11810f1 css-1jbzerv\" builder-id=\"builder-d2ba2d2cba8f43f8a2e6d41cb11810f1\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-92c02b8b5f1744d5be8b8735721b26e6 builder-has-component css-qguwqq\" builder-id=\"builder-92c02b8b5f1744d5be8b8735721b26e6\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eIntuitive interface with unobtrusive graphics for distraction-free use\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-column css-9yr98l\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-aea110725ac54c2aa3b0d0f0ef922618\"\u003e\n\u003cdiv class=\"builder-block builder-bba74ef2b7bc4b7aa2b4bf600a0b32f0 builder-has-component css-qguwqq\" builder-id=\"builder-bba74ef2b7bc4b7aa2b4bf600a0b32f0\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003eSensibility\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-00a4feee7a094b4b93a8b5d3be325a89 css-1jbzerv\" builder-id=\"builder-00a4feee7a094b4b93a8b5d3be325a89\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-89dd6cf82f804dd08790f13d2855d506 builder-has-component css-qguwqq\" builder-id=\"builder-89dd6cf82f804dd08790f13d2855d506\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eMotion effects enhance emotional engagement and user interaction\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-05315dfec8eb4fd0a3c32fc199827200 css-ytn4lx\" builder-id=\"builder-05315dfec8eb4fd0a3c32fc199827200\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-5708645a19d34d01b945cd079f4cf401 builder-has-component css-mycw3h\" builder-id=\"builder-5708645a19d34d01b945cd079f4cf401\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eAdvanced Audio Customization\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"12jjdc4\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-b6e930ce70024e65a25d134ab685a575 builder-has-component css-12jjdc4\" builder-id=\"builder-b6e930ce70024e65a25d134ab685a575\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003eDAC Filter Selection\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEnjoy personalized sound design by selecting from six DAC filters provided by Astell\u0026amp;Kern:\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1x4kqr\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-00d62e978a4b4ee5b7690989d87907fb builder-has-component css-1x4kqr\" builder-id=\"builder-00d62e978a4b4ee5b7690989d87907fb\"\u003e\u003cdiv class=\"builder-custom-code\"\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; font-family:sans-serif;\"\u003e \u003cthead\u003e \u003ctr style=\"background-color:#333; color:#fff;\"\u003e \u003cth style=\"padding:8px; border:1px solid #ccc;\"\u003eSound Type\u003c\/th\u003e \u003cth style=\"padding:8px; border:1px solid #ccc;\"\u003eFilter Name\u003c\/th\u003e \u003cth style=\"padding:8px; border:1px solid #ccc;\"\u003eCharacteristics\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr style=\"background-color:#f9f9f9;\"\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eNatural Tone\u003c\/td\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eSuper Slow Roll-off\u003c\/td\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eNo echo, reproduces natural sound\u003c\/td\u003e \u003c\/tr\u003e \u003ctr style=\"background-color:#ffffff;\"\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eAcoustic Tone\u003c\/td\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eShort Delay Slow Roll-off\u003c\/td\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eMinimal echo, reproduces original sound\u003c\/td\u003e \u003c\/tr\u003e \u003ctr style=\"background-color:#f9f9f9;\"\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eTraditional Tone\u003c\/td\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eSlow Roll-off\u003c\/td\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eMinimal echo, reproduces original sound\u003c\/td\u003e \u003c\/tr\u003e \u003ctr style=\"background-color:#ffffff;\"\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eHarmonic Sound\u003c\/td\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eLow Dispersion\u003c\/td\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eShort echo, reproduces original sound\u003c\/td\u003e \u003c\/tr\u003e \u003ctr style=\"background-color:#f9f9f9;\"\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eAcoustic Sound\u003c\/td\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eShort Delay Sharp Roll-off\u003c\/td\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003ePost echo, reproduces bass sound\u003c\/td\u003e \u003c\/tr\u003e \u003ctr style=\"background-color:#ffffff;\"\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eTraditional Sound\u003c\/td\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003eSharp Roll-off\u003c\/td\u003e \u003ctd style=\"padding:8px; border:1px solid #ccc;\"\u003ePre and post echoes create powerful sound\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1yq7gul\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-a413c877cc314e8d9bf06ff28bb56dd6 builder-has-component css-1yq7gul\" builder-id=\"builder-a413c877cc314e8d9bf06ff28bb56dd6\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003eCrossfeed Technology\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCrossfeed mixes parts of the original signal from one channel and sends that signal to the opposite channel with a time difference to center the sound image. Through the use of detailed settings such as Shelf Cutoff, Shelf Gain, and Mixer Level, you can set the level of crossfeed according to your listening preferences.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-444087a2e58e492f8d8f8ddab3ef14bf builder-has-component css-mycw3h\" builder-id=\"builder-444087a2e58e492f8d8f8ddab3ef14bf\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eSmart Features and Connectivity \u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1um9sn\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-dfb8df3ac9c747de8baca70f9a294140 builder-has-component css-1um9sn\" builder-id=\"builder-dfb8df3ac9c747de8baca70f9a294140\"\u003e\u003cdiv class=\"builder-columns css-1840m1q\"\u003e\n\u003cdiv class=\"builder-column css-2keume\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-dfb8df3ac9c747de8baca70f9a294140\"\u003e\n\u003cdiv class=\"builder-block builder-a3891e6d34ea444f844e62f2187fe337 builder-has-component css-hgfgng\" builder-id=\"builder-a3891e6d34ea444f844e62f2187fe337\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003eReal-Time LED Information Display\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-173ab963af7c422f9ae03ad9cd0b1bc1 builder-has-component css-hgfgng\" builder-id=\"builder-173ab963af7c422f9ae03ad9cd0b1bc1\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe LED light surrounding the power button provides visual information about the currently playing song's Bit Depth while adding an aesthetically pleasing element. LED functionality can be customized according to user preferences.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-6f65b30b3fb34662974d24565af7653a builder-has-component css-hgfgng\" builder-id=\"builder-6f65b30b3fb34662974d24565af7653a\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003eReplayGain Volume Normalization\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-8b28e66daff8496b81ad2b4ba7515f5a builder-has-component css-hgfgng\" builder-id=\"builder-8b28e66daff8496b81ad2b4ba7515f5a\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eReplayGain for Automatic Volume Level Adjustment ReplayGain functionality, which adjusts audio sources with varying volume levels to a uniform loudness, has been implemented. 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2vw\"\u003e\u003c\/picture\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"nrihax\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-2a1f59f08be94375b24a4e73a81dc5ea builder-has-component css-nrihax\" builder-id=\"builder-2a1f59f08be94375b24a4e73a81dc5ea\"\u003e\u003cdiv class=\"builder-columns css-1840m1q\"\u003e\n\u003cstyle data-emotion-css=\"qkhhuw\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-column css-qkhhuw\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-2a1f59f08be94375b24a4e73a81dc5ea\"\u003e\n\u003cdiv class=\"builder-block builder-b88f617fd527481a9639a931e16af273 builder-has-component css-hgfgng\" builder-id=\"builder-b88f617fd527481a9639a931e16af273\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003eWireless File Transfer: AK File Drop\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-9f3d037757994ad9a0e9e5d43cf6ea97 builder-has-component css-hgfgng\" builder-id=\"builder-9f3d037757994ad9a0e9e5d43cf6ea97\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe new AK File Drop function in the SP4000 makes files transfers easier and more convenient. Using AK File Drop, you can freely transfer files wirelessly through a PC, smartphone, or FTP program located on the same network. Music file management is now possible with a cableless, wireless solution.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"6ud36\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-column css-6ud36\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-2a1f59f08be94375b24a4e73a81dc5ea\"\u003e\n\u003cdiv class=\"builder-block builder-3c68eda0bc604ae398139658ef1d7a5b builder-has-component css-hgfgng\" builder-id=\"builder-3c68eda0bc604ae398139658ef1d7a5b\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003eBluetooth Hi-Fi: BT Sink Function\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-bb075ba4d77b435d9d3b8fd78e9d9131 builder-has-component css-hgfgng\" builder-id=\"builder-bb075ba4d77b435d9d3b8fd78e9d9131\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe BT Sink function allows you to connect the SP4000 to an external device via Bluetooth, similar to connecting a smartphone to a BT speaker. Music being played on the external device can be transmitted to the SP4000 through the BT Sink function.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-11857413172c4d2080d05759013f4311 css-ytn4lx\" builder-id=\"builder-11857413172c4d2080d05759013f4311\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-fbd5c5876e1048349562650ab2ae8d8a builder-has-component css-mycw3h\" builder-id=\"builder-fbd5c5876e1048349562650ab2ae8d8a\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003ePremium Display and Charging\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1sfr8li\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-ebf7a488608340f19f1e8b9c9fd5f9f4 builder-has-component css-1sfr8li\" builder-id=\"builder-ebf7a488608340f19f1e8b9c9fd5f9f4\"\u003e\u003cdiv class=\"builder-columns css-1840m1q\"\u003e\n\u003cdiv class=\"builder-column css-2keume\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-ebf7a488608340f19f1e8b9c9fd5f9f4\"\u003e\n\u003cdiv class=\"builder-block builder-a292cbaf0be840d1bc80bccaf685617c builder-has-component css-hgfgng\" builder-id=\"builder-a292cbaf0be840d1bc80bccaf685617c\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003e6-Inch 2K Display\u003cspan class=\"ql-cursor\"\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-c4ff9b72ff244526bf7d8b1a32a0d41a builder-has-component css-hgfgng\" builder-id=\"builder-c4ff9b72ff244526bf7d8b1a32a0d41a\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eExperience enhanced convenience and comfort with a large 6-inch, 2180x1080 2K touchscreen display that makes navigation and music management effortless.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-column css-bst442\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-ebf7a488608340f19f1e8b9c9fd5f9f4\"\u003e\n\u003cdiv class=\"builder-block builder-03750a0045454f5fb9510d1c6d8d85e3 builder-has-component css-hgfgng\" builder-id=\"builder-03750a0045454f5fb9510d1c6d8d85e3\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003ePD 3.0 Fast Charging\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-5e1e474ca90d485884e49ef077796088 builder-has-component css-hgfgng\" builder-id=\"builder-5e1e474ca90d485884e49ef077796088\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe SP4000 supports Qualcomm QC 3.0 fast charging, so you can charge your DAP faster and more efficiently than previous models, reaching a full charge in about 4 hours.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-94e2576bebb84ce6a2d0c9eea0d5a067 css-ytn4lx\" builder-id=\"builder-94e2576bebb84ce6a2d0c9eea0d5a067\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-1ad0f7d1c276416c8ed1d5ec3b107bde builder-has-component css-mycw3h\" builder-id=\"builder-1ad0f7d1c276416c8ed1d5ec3b107bde\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eLuxurious Materials and Craftsmanship\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1pxk2bz\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-2063e2640109418c94ede07f650212f0 builder-has-component css-1pxk2bz\" builder-id=\"builder-2063e2640109418c94ede07f650212f0\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003e904L Stainless Steel Construction\u003cspan class=\"ql-cursor\"\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-26d85823ad2f4727aa13ca9525319c7a builder-has-component css-tyhjbo\" builder-id=\"builder-26d85823ad2f4727aa13ca9525319c7a\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eTo achieve the A\u0026amp;ultima series goal of providing unmatched value through innovative, uncompromising design and craftsmanship, the SP4000 uses 904L stainless steel as its body material—never before attempted in portable audio players. This material elevates the device from a digital tool to a luxury item.\u003c\/p\u003e\n\u003cp\u003e904L stainless steel is significantly harder and more challenging to process than standard stainless steel, requiring substantially more time and effort. However, its exceptional durability and corrosion resistance ensure lasting beauty—the same qualities that make it the choice for expensive luxury watches where material perfection is paramount. Experience the uncompromising beauty and luxury achieved through Astell\u0026amp;Kern's expert craftsmanship.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-09543b36c08043cdb8e9563d5c27b443 css-ytn4lx\" builder-id=\"builder-09543b36c08043cdb8e9563d5c27b443\"\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"dnw4wz\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-b8f8ec072e214485a6645104fe119a5b builder-has-component css-dnw4wz\" builder-id=\"builder-b8f8ec072e214485a6645104fe119a5b\"\u003e\u003cdiv class=\"builder-columns css-1840m1q\"\u003e\n\u003cdiv class=\"builder-column css-2keume\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-b8f8ec072e214485a6645104fe119a5b\"\u003e\u003cdiv class=\"builder-block builder-25f4474ab6a14c43b9e27b29e1c5b93d css-1y6p72u\" builder-id=\"builder-25f4474ab6a14c43b9e27b29e1c5b93d\"\u003e\n\u003cpicture\u003e\u003csource srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?format=webp\u0026amp;width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?format=webp\u0026amp;width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?format=webp\u0026amp;width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?format=webp\u0026amp;width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?format=webp\u0026amp;width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?format=webp\u0026amp;width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?format=webp\u0026amp;width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?format=webp\u0026amp;width=783 783w\" type=\"image\/webp\"\u003e\u003cimg role=\"presentation\" loading=\"lazy\" class=\"builder-image css-1hbf805\" src=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?width=783\" srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Faf388121854b4fd9a608d6ff0b44369b?width=783 783w\" sizes=\"(max-width: 638px) 98vw, (max-width: 998px) 29vw, 56vw\"\u003e\u003c\/picture\u003e\u003cstyle data-emotion-css=\"qjm9kp\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-image-sizer css-qjm9kp\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-column css-bst442\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-b8f8ec072e214485a6645104fe119a5b\"\u003e\n\u003cdiv class=\"builder-block builder-14e4529235e54ac0a1433f98dbfcc87e builder-has-component css-hgfgng\" builder-id=\"builder-14e4529235e54ac0a1433f98dbfcc87e\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003ePremium German Leather Case\u003c\/strong\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-9cc10d2e842a4f0cb00d21eb5f01045b builder-has-component css-hgfgng\" builder-id=\"builder-9cc10d2e842a4f0cb00d21eb5f01045b\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eEach SP4000 includes a premium leather case crafted from Shrunken Calf by Perlinger, Germany's world-renowned leather house. Founded in 1864 and spanning five generations of craftsmanship, Perlinger supplies the finest leather to luxury brands worldwide, blending time-honored tradition with modern techniques.\u003c\/p\u003e\n\u003cp\u003eThe Shrunken Calf leather comes from the soft, delicate hide of calves under one year old, processed using chrome tanning to preserve natural texture. The leather is uniquely shrunk using special agents–not heat–to retain organic grain and wrinkles. Following an aniline dyeing process, Perlinger's proprietary pigments create deep, vibrant colors, while advanced anti-aging treatment ensures lasting richness that complements the SP4000's enduring beauty, durability, and luxury.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-01406a4e2bcb45ceba29b1aa8ceac56d builder-has-component css-mycw3h\" builder-id=\"builder-01406a4e2bcb45ceba29b1aa8ceac56d\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eDesign Philosophy: \"Pierce\"\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1h4jxqc\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-e634f58856d84d50bbb98cdf102b3eaf builder-has-component css-1h4jxqc\" builder-id=\"builder-e634f58856d84d50bbb98cdf102b3eaf\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cem\u003e\"The force of light that pierces through the darkness.\"\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe SP4000 stands at the pinnacle of Astell\u0026amp;Kern's flagship A\u0026amp;ultima line–a DAP embodying peak performance and design. Like light piercing darkness, the rotating volume wheel generates energy visualized as shards breaking through solid walls. This concept is expressed through sharp edges, restrained detailing, and geometric structures that convey both explosive force and concentrated power. \u003c\/p\u003e\n\u003cp\u003eThe interplay of contrasting surfaces and multidimensional forms transcends aesthetics, serving as a visual representation of the SP4000's high-performance audio capabilities. Even the volume wheel's pattern angles have been meticulously crafted to deliver subtle tactile resistance, creating a sensory experience that connects users to the sound itself–not just control, but intuitive, emotional interaction with music. \u003c\/p\u003e\n\u003cp\u003eThe choice of materials in the SP4000 perfectly embody both technology and emotion: high-gloss polished 904L stainless steel front paired with PVD-coated ceramic rear, offering exceptional craftsmanship in form and function. \u003c\/p\u003e\n\u003cp\u003eThe SP4000 transcends the concept of a digital audio player–it is a work of art where technology, design, intuition, and performance converge, expressing pure passion for the ultimate sound experience. \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"lo15uk\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-b1a1cb8bd5ff4fa4afed040e79fbe0f9 css-lo15uk\" builder-id=\"builder-b1a1cb8bd5ff4fa4afed040e79fbe0f9\"\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1qtr9xa\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-21637d8b74634b7b8b134701fda0a115 builder-has-component css-1qtr9xa\" builder-id=\"builder-21637d8b74634b7b8b134701fda0a115\"\u003e\u003cdiv class=\"builder-columns css-1840m1q\"\u003e\n\u003cdiv class=\"builder-column css-2keume\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-21637d8b74634b7b8b134701fda0a115\"\u003e\n\u003cdiv class=\"builder-block builder-09ede408dbd44f3c9fbd63faff871914 builder-has-component css-hgfgng\" builder-id=\"builder-09ede408dbd44f3c9fbd63faff871914\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-6b45eee272f941dabf948c32c88108ed builder-has-component css-hgfgng\" builder-id=\"builder-6b45eee272f941dabf948c32c88108ed\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cul\u003e\n\u003cli\u003eEnhanced signal processing capabilities with Octa audio circuit architecture\u003c\/li\u003e\n\u003cli\u003eSupports High Driving Mode for delivering premium sound quality\u003c\/li\u003e\n\u003cli\u003eMinimizes group delay with proprietary ESA (Enhanced Signal Alignment) technology\u003c\/li\u003e\n\u003cli\u003eUltra Low Noise LDO Regulator for top-tier noise suppression\u003c\/li\u003e\n\u003cli\u003ePrecision sound achieved with Any Layer Type PCB\u003c\/li\u003e\n\u003cli\u003eEquipped with a 99.9% Pure Copper Shield Can\u003c\/li\u003e\n\u003cli\u003eFirst Astell\u0026amp;Kern Device to Support Full Android OS\u003c\/li\u003e\n\u003cli\u003eFirst Astell\u0026amp;Kern Device to Feature Advanced DAR Technology\u003c\/li\u003e\n\u003cli\u003eFeatures 4.5th generation UI, combining functionality and emotional design\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-column css-bst442\"\u003e\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\" builder-type=\"blocks\" builder-parent-id=\"builder-21637d8b74634b7b8b134701fda0a115\"\u003e\n\u003cstyle data-emotion-css=\"96q1si\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-c98cef2cc77448d99a0681fbed9b1eb5 builder-has-component css-96q1si\" builder-id=\"builder-c98cef2cc77448d99a0681fbed9b1eb5\"\u003e\u003cdiv class=\"builder-embed\"\u003e\u003cdiv style=\"left: 0; width: 100%; height: 0; position: relative; padding-bottom: 56.25%;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/dDj6jMjrm-A?rel=0\" style=\"top: 0; left: 0; width: 100%; height: 100%; position: absolute; border: 0;\" allowfullscreen scrolling=\"no\" allow=\"accelerometer *; clipboard-write *; encrypted-media *; gyroscope *; picture-in-picture *; web-share *;\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-f69c3b5156734d38b510453e58e00067 builder-has-component css-hgfgng\" builder-id=\"builder-f69c3b5156734d38b510453e58e00067\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1ncbkyg\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-1e3677796ed24f51968cd6659fe04023 builder-has-component css-1ncbkyg\" builder-id=\"builder-1e3677796ed24f51968cd6659fe04023\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cul\u003e\n\u003cli\u003eAstell\u0026amp;Kern A\u0026amp;ultima SP4000 Digital Audio Player\u003c\/li\u003e\n\u003cli\u003ePremium Perlinger Shrunken Calf leather case (German craftsmanship)\u003c\/li\u003e\n\u003cli\u003eUSB Type-C charging cable\u003c\/li\u003e\n\u003cli\u003eQuick start guide and documentation\u003c\/li\u003e\n\u003cli\u003eWarranty information\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-0f0e945878564c8eb5b3b0630f4966dd css-ytn4lx\" builder-id=\"builder-0f0e945878564c8eb5b3b0630f4966dd\"\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"ef7vym\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-06bad39c6b7f4fcdb71759dff450e836 builder-has-component css-ef7vym\" builder-id=\"builder-06bad39c6b7f4fcdb71759dff450e836\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"ya6mut\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-ba5a1013ec2f4cccb86b131e73bec8f9 builder-has-component css-ya6mut\" builder-id=\"builder-ba5a1013ec2f4cccb86b131e73bec8f9\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eIs the SP4000 truly \"full Android\" and can I install any app? \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1ktoov9\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-d4e0f02e0ebc4b7ea3a6faee9fd5c7bd builder-has-component css-1ktoov9\" builder-id=\"builder-d4e0f02e0ebc4b7ea3a6faee9fd5c7bd\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe Astell\u0026amp;Kern SP4000 DAP supports full Android, with the Google Play Store preinstalled. Some apps may experience compatibility errors due to Android system issues, but the SP4000 supports most applications. \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-c2b1ecb886df4ae1950266821020ca50 builder-has-component css-ya6mut\" builder-id=\"builder-c2b1ecb886df4ae1950266821020ca50\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eShould I upgrade from SP3000 to SP4000? \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"n4f5qt\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-3fe2256f59ba4d99b104376308dba3b8 builder-has-component css-n4f5qt\" builder-id=\"builder-3fe2256f59ba4d99b104376308dba3b8\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe Astell\u0026amp;Kern SP4000 DAP sports several improvements to design, internal componentry, and technology, compared to the SP3000. Those considering the upgrade will reap the benefit of the SP4000's full Android operating system, allowing users to download and install any app available on the Google Play Store. This functionality enables a more intuitive, customizable user experience. Even owners of earlier flagships like the Astell\u0026amp;Kern A\u0026amp;ultima SP3000T, SP3000M, SP2000T, and SP1000M will find the leap in functionality and sound quality well worth the investment.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-b0a6331a867a4f7d9b433f88ab8993be builder-has-component css-ya6mut\" builder-id=\"builder-b0a6331a867a4f7d9b433f88ab8993be\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eHow does it sound compared to the SP3000? \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"tdzuxo\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-d009bbb508174547b07657bf9fa209a1 builder-has-component css-tdzuxo\" builder-id=\"builder-d009bbb508174547b07657bf9fa209a1\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eCompared to the SP3000, the sound quality of the SP4000 DAP is regarded as richer and more detailed. With improved internal technology, the SP4000 delivers an accurate, natural, and dynamic sound quality that expands on the SP3000's reference sound.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-66bba1bfeefe4306b057f1ab9f928c01 builder-has-component css-ya6mut\" builder-id=\"builder-66bba1bfeefe4306b057f1ab9f928c01\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eHow does battery life compare to SP3000? \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-605c8cae6ace458c9dd1f8a6b9e48573 builder-has-component css-tdzuxo\" builder-id=\"builder-605c8cae6ace458c9dd1f8a6b9e48573\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe SP4000 DAP has a 6,780mAh 3.8V Li-Polymer battery boasting 10 hours of playback after 4 hours of charging (PD 3.0 Fast Charging). The SP3000 boasts the same playback time but uses a 5,050mAh 3.8V Li-Polymer battery that requires about 3.5 hours to achieve a full charge.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-e98316356e0d4060a22c393cc9c4df7d builder-has-component css-ya6mut\" builder-id=\"builder-e98316356e0d4060a22c393cc9c4df7d\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eHow heavy is it and is it too big to carry practically? \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-debe51a8bacf4d07bc873058950b105e builder-has-component css-tdzuxo\" builder-id=\"builder-debe51a8bacf4d07bc873058950b105e\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eAt 21.7 oz with a stainless steel 904L body, the SP4000 DAP is the heaviest player released by Astell\u0026amp;Kern to date. While the 6\" screen makes the SP4000 a decently sized DAP, it's still portable enough to carry around and travel with.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-2d6c92ee05c54927b7b66a20cb721793 builder-has-component css-ya6mut\" builder-id=\"builder-2d6c92ee05c54927b7b66a20cb721793\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eCan the SP4000 function as a desktop DAC\/Transport? \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-c0771110faa841f78e5e26c1d5d55ba7 builder-has-component css-1ktoov9\" builder-id=\"builder-c0771110faa841f78e5e26c1d5d55ba7\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eYes, the SP4000 DAP can be used as a USB DAC, a Roon Ready endpoint, or a transport to drive an external amplifier stack. \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-65cdc8b8e5f24c258074c48c952a6bc0 builder-has-component css-ya6mut\" builder-id=\"builder-65cdc8b8e5f24c258074c48c952a6bc0\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eCan the SP4000 drive difficult headphones like planar magnetic properly? \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-c6214eb6801c45fe80c1b087dbbad327 builder-has-component css-tdzuxo\" builder-id=\"builder-c6214eb6801c45fe80c1b087dbbad327\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eYes, the SP4000 DAP features a High Driving Mode with two OPAMPs arranged in a parallel configuration, which better optimizes the output for hard-to-drive headphones. High Driving Mode enables the SP4000 DAP to drive planar magnetic headphones more efficiently than previous models.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-df5d1b2db8984215851a4876f903b536 builder-has-component css-ya6mut\" builder-id=\"builder-df5d1b2db8984215851a4876f903b536\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eDoes it get hot during extended use or heavy Android app usage? \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-3105f0deb6e64d119e856e7466d7f54b builder-has-component css-tdzuxo\" builder-id=\"builder-3105f0deb6e64d119e856e7466d7f54b\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eAs with any high-end component, using the SP4000 DAP for extended periods without sporadic shutdowns may cause the system to heat up. The SP4000's high-performance CPU is designed to maximize the efficiency of the overall circuit, reducing heat and noise from digital circuits.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-b49f3bed71144405a32725eb7d933d99 builder-has-component css-ya6mut\" builder-id=\"builder-b49f3bed71144405a32725eb7d933d99\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eCan the SP4000 drive difficult headphones like planar magnetic properly? \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-0ebfe514f18c49c3a99fe155933085b1 builder-has-component css-tdzuxo\" builder-id=\"builder-0ebfe514f18c49c3a99fe155933085b1\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eYes, the SP4000 DAP features a High Driving Mode with two OPAMPs arranged in a parallel configuration, which better optimizes the output for hard-to-drive headphones. High Driving Mode enables the SP4000 DAP to drive planar magnetic headphones more efficiently than previous models.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-88a3bb5dddd1449e904a548ac6d021b4 builder-has-component css-ya6mut\" builder-id=\"builder-88a3bb5dddd1449e904a548ac6d021b4\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eWhat's the difference between high driving mode and normal mode? \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-9b380c417fd1483499ffaf1caac35a90 builder-has-component css-tdzuxo\" builder-id=\"builder-9b380c417fd1483499ffaf1caac35a90\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eHigh Driving Mode is ideal for hard-to-drive headphones, providing a powerful and stable output than normal driving mode. The SP4000 features twice as many OPAMPs compared to previous models, arranged in a parallel configuration. This expands the driving range horizontally with no increase in noise or reduction in the signal-to-noise ratio.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-ed3b465e807b40ac86da5cd6300afaf0 builder-has-component css-ya6mut\" builder-id=\"builder-ed3b465e807b40ac86da5cd6300afaf0\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eHow does the 1:1 DAC architecture improve over SP3000's 1:2 ratio? \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-f33dc827a8d24e36a02cfd24d41fcf0a builder-has-component css-tdzuxo\" builder-id=\"builder-f33dc827a8d24e36a02cfd24d41fcf0a\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eIn the SP3000 DAP, the digital-to-analog processing was separated in a 1:2 ratio. With the SP4000 DAP's 1:1 DAC architecture, one AK4191 digital processor is paired with one AK4499EX DAC, enabling digital signals to be delivered precisely to a single DAC without the need for noise distribution. This new structure delivers improved signal separation and processing.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-8f91c0eeb5b248c8872d41ce650b05be builder-has-component css-ya6mut\" builder-id=\"builder-8f91c0eeb5b248c8872d41ce650b05be\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eWhat's the difference between Octa Audio Circuit Architecture vs. SP3000's HEXA? \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-66e2933812844af8be92da52f5fc6c2e builder-has-component css-tdzuxo\" builder-id=\"builder-66e2933812844af8be92da52f5fc6c2e\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe SP4000 DAP achieves its Octa Audio Circuit Architecture with four AK4499EX DAC chips and four AK4191 digital processors. The SP3000 used a HEXA-Audio Circuitry structure with two AK4191EQs and four AK4499EXs, but the SP4000's Octa design represents a more advanced implementation with better 1:1 pairing.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-3dffcfbbcfdd493ba07b9676b86741ac builder-has-component css-ya6mut\" builder-id=\"builder-3dffcfbbcfdd493ba07b9676b86741ac\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eDoes it support DSD512 and 32-bit\/768kHz PCM? \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-d9344765967542bca74f1b1694dfb085 builder-has-component css-1ktoov9\" builder-id=\"builder-d9344765967542bca74f1b1694dfb085\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eYes, the SP4000 DAP supports native playback up to 32-bit\/768kHz PCM and DSD512. The SP4000 can handle hi-res music files including WAV, FLAC, AIFF, and ALAC.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"ur9nhf\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-54b10ab806b542f38420bc370a3d3f99 css-ur9nhf\" builder-id=\"builder-54b10ab806b542f38420bc370a3d3f99\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1n465md\"\u003e\u003c\/style\u003e\n\u003cimg src=\"https:\/\/cdn.builder.io\/api\/v1\/pixel?apiKey=48d1cdcd52ec4d289f1ef8c4f75da167\" aria-hidden=\"true\" alt=\"\" role=\"presentation\" width=\"0\" height=\"0\" class=\"builder-block builder-pixel-7pbujxf8wza css-1n465md\" builder-id=\"builder-pixel-7pbujxf8wza\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/builder-component\u003e\n\u003cscript async src=\"https:\/\/cdn.builder.io\/js\/webcomponents\"\u003e\u003c\/script\u003e","brand":"Astell \u0026 Kern","offers":[{"title":"Black","offer_id":51396823220538,"sku":"astell-kern-sp4000","price":4290.0,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":51396823253306,"sku":"astell-kern-sp4000-silver","price":4290.0,"currency_code":"USD","in_stock":true},{"title":"Copper","offer_id":52989134438714,"sku":"ASTELL-KERN-SP4000-COPPER","price":4499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0834\/0245\/7402\/files\/SP4000C_001.jpg?v=1770499570","url":"https:\/\/www.moon-audio.pro\/products\/astell-kern-a-ultima-sp4000-dap-music-player","provider":"Moon Audio","version":"1.0","type":"link"}