{"product_id":"quartet-fpga-upscaler","title":"Quartet Digital Upscaler","description":"\u003c!-- ***** Generated by Builder.io on Wed, 19 Aug 2026 19:14:22 GMT ***** --\u003e\n\u003cstyle type=\"text\/css\" class=\"builder-styles builder-api-styles\"\u003e\/*start:h47494*\/.css-h47494{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-flex-direction:column;-ms-flex-direction:column;flex-direction:column;-webkit-align-items:stretch;-webkit-box-align:stretch;-ms-flex-align:stretch;align-items:stretch;}\/*end:h47494*\/ \/*start:gmk9up*\/.css-gmk9up.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:auto;margin-right:200px;margin-left:200px;padding-bottom:30px;}@media only screen and (max-width:991px){.css-gmk9up.builder-block{margin-left:20px;margin-right:20px;}}\/*end:gmk9up*\/ \/*start:hgfgng*\/.css-hgfgng.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;line-height:normal;height:auto;}\/*end:hgfgng*\/ \/*start:1qggkls*\/.css-1qggkls{outline:none;}.css-1qggkls p:first-of-type,.css-1qggkls .builder-paragraph:first-of-type{margin:0;}.css-1qggkls \u003e p,.css-1qggkls .builder-paragraph{color:inherit;line-height:inherit;-webkit-letter-spacing:inherit;-moz-letter-spacing:inherit;-ms-letter-spacing:inherit;letter-spacing:inherit;font-weight:inherit;font-size:inherit;text-align:inherit;font-family:inherit;}\/*end:1qggkls*\/ \/*start:96q1si*\/.css-96q1si.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;}\/*end:96q1si*\/ \/*start:1840m1q*\/.css-1840m1q{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;}@media (max-width:999px){.css-1840m1q{-webkit-flex-direction:column;-ms-flex-direction:column;flex-direction:column;-webkit-align-items:stretch;-webkit-box-align:stretch;-ms-flex-align:stretch;align-items:stretch;}}\/*end:1840m1q*\/ \/*start:2keume*\/.css-2keume{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-flex-direction:column;-ms-flex-direction:column;flex-direction:column;-webkit-align-items:stretch;-webkit-box-align:stretch;-ms-flex-align:stretch;align-items:stretch;line-height:normal;width:calc(50% - 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The Chord Quartet exists to correct it. Representing the most significant advancement in Chord Electronics' digital audio history, this reference-class digital upscaler tackles the timing errors baked into standard digital audio playback, delivering the kind of transient precision that turns good systems into reference-grade ones. Available in Silver or Jett Black to match your existing Chord stack, the Quartet Scaler is designed to sit at the center of the most demanding digital front ends.\u003c\/p\u003e\n\u003cp class=\"\"\u003eAt the heart of the Quartet is the all-new Blackbird WTA (Watts Transient Aligned) filter–the culmination of 46 years of dedicated research from Chord's engineering team. Paired with five Xilinx FPGAs (five times the processing power of the flagship DAVE DAC) and nearly two million lines of proprietary code, the Quartet doesn't just play back digital audio — it reconstructs it with a level of mathematical precision previously unavailable outside a laboratory. It's the natural evolution of the technology found in the Hugo M Scaler and M Scaler, pushed farther than Chord has ever taken it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\u003c\/style\u003e\n\u003cstyle\u003e\u003c\/style\u003e\n\u003cstyle\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-component builder-component-228074fddb8b46238b12d52b2a698928\"\u003e\n\u003cdiv class=\"builder-content\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"builder-blocks css-h47494\"\u003e\n\u003cdiv class=\"builder-block builder-6db15fc996ef4e73901ece5870b7a4f6 css-gmk9up\"\u003e\n\u003cdiv class=\"builder-block builder-11f1a3a01062420da8e7712ba856aa0f builder-has-component css-96q1si\"\u003e\n\u003cdiv class=\"builder-columns css-1840m1q\"\u003e\n\u003cdiv class=\"builder-column css-2keume\"\u003e\n\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\"\u003e\n\u003cdiv class=\"builder-block builder-2c2a0bf7ec834be5aa357a4941e158cd builder-has-component css-hgfgng\"\u003e\n\u003ch3 class=\"\"\u003eThe Filter That Changes Everything\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-f7a2a3e77b3448a08ea7329879df2173 builder-has-component css-hgfgng\"\u003e\n\u003cp class=\"\"\u003eThe Blackbird WTA filter, built on a staggering four million filter taps, represents a tenfold increase over previous WTA designs, translating directly into a tenfold improvement in transient timing accuracy. Nearly 100% of the filter's mathematical coefficients reach the theoretical ideal \"sinc function\" — the gold standard for perfect waveform reconstruction. Crucially, all filtering is executed directly within the hardware architecture. By avoiding the software-industry shortcut of FFT convolution, which converts audio to frequency data and back, introducing further timing errors, the Quartet preserves pure signal integrity, delivering unmatched transient fidelity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\u003c\/style\u003e\n\u003cstyle\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-component builder-component-228074fddb8b46238b12d52b2a698928\"\u003e\n\u003cdiv class=\"builder-content\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"builder-blocks css-h47494\"\u003e\n\u003cdiv class=\"builder-block builder-6db15fc996ef4e73901ece5870b7a4f6 css-gmk9up\"\u003e\n\u003cdiv class=\"builder-block builder-11f1a3a01062420da8e7712ba856aa0f builder-has-component css-96q1si\"\u003e\n\u003cdiv class=\"builder-columns css-1840m1q\"\u003e\n\u003cdiv class=\"builder-column css-bst442\"\u003e\n\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\"\u003e\n\u003cdiv class=\"builder-block builder-7edc603ca1624bf982b4b80f428a20c7 css-1y6p72u\"\u003e\u003cpicture\u003e\u003csource srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F836327f4318c4b49a5c869e323e22836?format=webp\u0026amp;width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F836327f4318c4b49a5c869e323e22836?format=webp\u0026amp;width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F836327f4318c4b49a5c869e323e22836?format=webp\u0026amp;width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F836327f4318c4b49a5c869e323e22836?format=webp\u0026amp;width=800 800w, 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srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F836327f4318c4b49a5c869e323e22836?width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F836327f4318c4b49a5c869e323e22836?width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F836327f4318c4b49a5c869e323e22836?width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F836327f4318c4b49a5c869e323e22836?width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F836327f4318c4b49a5c869e323e22836?width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F836327f4318c4b49a5c869e323e22836?width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F836327f4318c4b49a5c869e323e22836?width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2F836327f4318c4b49a5c869e323e22836?width=783 783w\" sizes=\"(max-width: 638px) 92vw, (max-width: 998px) 29vw, 56vw\"\u003e\u003c\/picture\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\u003c\/style\u003e\n\u003cstyle\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-component builder-component-228074fddb8b46238b12d52b2a698928\"\u003e\n\u003cdiv class=\"builder-content\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"builder-blocks css-h47494\"\u003e\n\u003cdiv class=\"builder-block builder-6db15fc996ef4e73901ece5870b7a4f6 css-gmk9up\"\u003e\n\u003cdiv class=\"builder-block builder-400176fc5ca34ea5b737b3ef0f976c8d builder-has-component css-1xo27xl\"\u003e\n\u003cp class=\"\"\u003eFive Xilinx FPGAs give the Quartet massive processing capability: 3,700 DSP cores running over two million lines of proprietary code, all dedicated to executing this complex interpolation algorithm without compromise. Programmable latency settings let you fine-tune the filter’s behavior to match your specific system and listening preferences, giving advanced users direct control over how aggressively the Quartet processes incoming signal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-4d01a410748042679adccdb47a86876f builder-has-component css-1xo27xl\"\u003e\n\u003ch3 class=\"\"\u003eTurntables Welcome\u003c\/h3\u003e\n\u003cp class=\"\"\u003eFor the first time in a Chord Electronics upscaler, the Quartet integrates a proprietary Pulse Array ADC (analogue-to-digital converter). This built-in ADC allows analogue sources, including high-end turntables, to benefit directly from the device’s upscaling power. By employing advanced decimation filtering, the integrated ADC eliminates traditional aliasing distortion, outperforming even dedicated studio-grade conversion hardware.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-b6da296342494784b8ea1b4ba8be0eff builder-has-component css-96q1si\"\u003e\n\u003cdiv class=\"builder-columns css-1840m1q\"\u003e\n\u003cdiv class=\"builder-column css-2keume\"\u003e\n\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\"\u003e\n\u003cdiv class=\"builder-block builder-1a3533393c7546f4b531d7526c993a23 css-1y6p72u\"\u003e\n\u003cpicture\u003e\u003csource srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?format=webp\u0026amp;width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?format=webp\u0026amp;width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?format=webp\u0026amp;width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?format=webp\u0026amp;width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?format=webp\u0026amp;width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?format=webp\u0026amp;width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?format=webp\u0026amp;width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?format=webp\u0026amp;width=783 783w\" type=\"image\/webp\"\u003e\u003cimg alt=\"black quartet on stand angled\" loading=\"lazy\" class=\"builder-image css-1hbf805\" src=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?width=783\" srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fb95e46216e924ea7870dd43a26aa7645?width=783 783w\" sizes=\"(max-width: 638px) 92vw, (max-width: 998px) 29vw, 56vw\"\u003e\u003c\/picture\u003e\n\u003cdiv class=\"builder-image-sizer css-10ytbmo\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"builder-column css-bst442\"\u003e\n\u003cdiv class=\"builder-blocks builder-blocks-child css-h47494\"\u003e\n\u003cdiv class=\"builder-block builder-ba95d8b8ec294f6fa9cd24852b664f51 builder-has-component css-hgfgng\"\u003e\n\u003ch3 class=\"\"\u003eBuilt Like It Matters\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-d5609253f28f4618ace84b477995f0d9 builder-has-component css-hgfgng\"\u003e\n\u003cp class=\"\"\u003eTo protect the digital signal from interference, the Quartet benefits from a two-box design. The sensitive audio circuitry is isolated from an independent, Rob-Watts-designed power supply that incorporates a proprietary pinch-off RF filter architecture. This RF rejection achieves the exceptional sonic purity of a battery-powered device from a mains-connected unit.\u003c\/p\u003e\n\u003cp class=\"\"\u003eThe rear panel features comprehensive, isolated connectivity, including USB-B, S\/PDIF optical, dual BNC outputs, and dual BNC inputs capable of supporting maximum resolution up to 768 kHz. The Quartet is compatible with all Chord Electronics DACs–from the entry-level \u003ca href=\"https:\/\/www.moon-audio.pro\/products\/chord-qutest-dac\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eQutest \u003c\/a\u003eand \u003ca href=\"https:\/\/www.moon-audio.pro\/products\/chord-mojo-dac-headphone-amp\" rel=\"noopener noreferrer\" class=\"\" target=\"_blank\"\u003eMojo 2\u003c\/a\u003e to the \u003ca href=\"https:\/\/www.moon-audio.pro\/products\/chord-hugo-tt-2-dac\" rel=\"noopener noreferrer\" class=\"\" target=\"_blank\"\u003eHugo TT2\u003c\/a\u003e and \u003ca href=\"https:\/\/www.moon-audio.pro\/products\/chord-dave-dac\" rel=\"noopener noreferrer\" class=\"\" target=\"_blank\"\u003eDAVE\u003c\/a\u003e–and is capable of unlocking the full potential of the DAVE DAC.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-component builder-component-228074fddb8b46238b12d52b2a698928\"\u003e\n\u003cdiv class=\"builder-content\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"builder-blocks css-h47494\"\u003e\n\u003cdiv class=\"builder-block builder-6db15fc996ef4e73901ece5870b7a4f6 css-gmk9up\"\u003e\n\u003cdiv class=\"builder-block builder-f88056776ef54f4893b406a895f9343b css-ur9nhf\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-e76e038acc674f3f90c38349591a81e4 builder-has-component css-hgfgng\"\u003e\n\u003ch3 class=\"\"\u003eFAQs\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-d61c6abbad384cbf8685d35499a63054 builder-has-component css-hgfgng\"\u003e\n\u003cp class=\"\"\u003e\u003cstrong class=\"\"\u003eDo I need a Chord DAC to use the Quartet? \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"\"\u003eThe Quartet is compatible with all Chord Electronics DACs and is specifically engineered to unlock the full potential of the DAVE DAC—pairing them together is the ideal way to hear what the Blackbird WTA filter is capable of.\u003c\/p\u003e\n\u003cp class=\"\"\u003e\u003cbr class=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"\"\u003e\u003cstrong class=\"\"\u003eCan I use the Quartet with a Turntable? \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"\"\u003eYes. The Quartet's integrated Pulse Array ADC is the first in a Chord upscaler, letting analog sources like Turntables benefit from the same upscaling power as digital sources.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-component builder-component-228074fddb8b46238b12d52b2a698928\"\u003e\n\u003cdiv class=\"builder-content\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"builder-blocks css-h47494\"\u003e\u003cimg src=\"https:\/\/cdn.builder.io\/api\/v1\/pixel?apiKey=48d1cdcd52ec4d289f1ef8c4f75da167\" alt=\"\" role=\"presentation\" width=\"0\" height=\"0\" class=\"builder-block builder-pixel-t93gyexgup css-1n465md\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Chord Electronics","offers":[{"title":"Black","offer_id":53553124999482,"sku":"quartrt-fpga-black","price":35995.0,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":53553125032250,"sku":"quartrt-fpga-silver","price":35995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0834\/0245\/7402\/files\/Quartetresized_3d56e6d7-d5ee-4066-97d0-1116aced065b.jpg?v=1780322124","url":"https:\/\/www.moon-audio.pro\/products\/quartet-fpga-upscaler","provider":"Moon Audio","version":"1.0","type":"link"}