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A full-titanium body, a single high-performance dynamic driver, and a precisely tuned acoustic architecture work seamlessly together to deliver the layering, imaging, and resolution typically associated with multi-driver designs, along with the tonal density and natural warmth only a single dynamic driver can offer. Simplicity raised to the highest level of performance. \u003c\/p\u003e\n\u003cp\u003eThe sound signature is full-bodied, natural, and engaging: a rich, neutral tuning with realistic timbre, excellent resolution and detail retrieval, and strong dynamics and texture across the entire frequency range from a tight, impactful low end to transparent, extended highs that reveal fine musical detail without causing fatigue.\u003c\/p\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"96q1si\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-00d5e848b1e54451a6688823e4e434a9 builder-has-component css-96q1si\" builder-id=\"builder-00d5e848b1e54451a6688823e4e434a9\"\u003e\n\u003cstyle data-emotion-css=\"1840m1q\"\u003e\u003c\/style\u003e\n\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 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css-1qggkls\"\u003e\u003ch3\u003eDESIGN \u0026amp; CRAFTSMANSHIP\u003c\/h3\u003e\n\u003cp\u003eASTRU's chassis builds on the ergonomic foundations of ALBA and ADVAR, further refined for improved long-term comfort. Each unit is CNC-machined from a single block of pure titanium, with multilayer electroplating to achieve a signature satin finish. Processing one matched pair of shells requires up to seven days:\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1odpkv6\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-6ffb3938df164089a0a4a091717a90f1 builder-has-component css-1odpkv6\" builder-id=\"builder-6ffb3938df164089a0a4a091717a90f1\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cul\u003e\n\u003cli\u003eFull-Titanium One-Piece Housing: CNC-machined for precision fit, durability, and a lightweight feel at just 13.4g (0.47 oz)\u003c\/li\u003e\n\u003cli\u003eElectroplated Satin Finish: Multilayer electroplating process delivers a refined, premium aesthetic\u003c\/li\u003e\n\u003cli\u003eElectroplated Nickel Wax Guard: Built-in protection without compromising sound transparency \u003c\/li\u003e\n\u003cli\u003eHigh-Quality 4.4 mm Balanced Cable: Silver-plated LC-OFC conductors, 161 conductors per strand, SoftFlex PVC insulation, CNC-anodized aluminum housings, and a gold-plated 4.4 mm balanced termination — optimized for signal purity, low resistance, and compatibility with high-end portable sources\u003c\/li\u003e\n\u003cli\u003eIncluded Accessories: 4.4 mm to 3.5 mm adapter, five pairs of liquid silicone ear tips (XS, S, M, L, XL), hard pouch, and PU leather envelope for everyday carry;\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"oyhl3r\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-fbd07649cc554784bfab8977fe964d06 builder-has-component css-oyhl3r\" builder-id=\"builder-fbd07649cc554784bfab8977fe964d06\"\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\"\u003e\u003cdiv class=\"builder-block builder-de8d6083dc1948198c101d10113a85eb builder-has-component css-hgfgng\" builder-id=\"builder-de8d6083dc1948198c101d10113a85eb\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eACOUSTIC ENGINEERING\u003c\/h3\u003e\n\u003cp\u003eAt the heart of ASTRU is a 10 mm dynamic driver featuring an advanced multilayer metal-coated composite diaphragm, which results from a meticulous, multi-stage manufacturing process:\u003c\/p\u003e\n\u003cp\u003e• Gold-Coated Outer Dome: 80 ultra-thin layers of gold applied via physical vacuum DC magnetron sputtering over a 48-hour process, ensuring unmatched consistency and controlled resonance\u003c\/p\u003e\n\u003cp\u003e• Titanium + PEEK Dome Construction: A titanium layer bonded to a PEEK dome base balances stiffness, transient speed, and resonance control\u003c\/p\u003e\n\u003cp\u003e• Precision Magnetic Architecture: A vented backplate, inner and outer ring magnets, and a front magnetic spacer work in concert for optimal driver excursion and dynamic linearity\u003c\/p\u003e\n\u003cp\u003eThis configuration achieves multi-driver performance, layered imaging, precise staging, and high resolution within a single, cohesive driver system.\u003c\/p\u003e\u003c\/span\u003e\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\"\u003e\n\u003cdiv class=\"builder-block builder-31ce3b3c56e54dc899d643638b42744f css-1y6p72u\" builder-id=\"builder-31ce3b3c56e54dc899d643638b42744f\"\u003e\n\u003cpicture\u003e\u003csource srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fbf7534eca03f410ab226686fe6cefb0a?format=webp\u0026amp;width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fbf7534eca03f410ab226686fe6cefb0a?format=webp\u0026amp;width=200 200w, 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Driver IEMs impressions upclose\" loading=\"lazy\" class=\"builder-image css-1hbf805\" src=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fbf7534eca03f410ab226686fe6cefb0a?width=783\" srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fbf7534eca03f410ab226686fe6cefb0a?width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fbf7534eca03f410ab226686fe6cefb0a?width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fbf7534eca03f410ab226686fe6cefb0a?width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fbf7534eca03f410ab226686fe6cefb0a?width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fbf7534eca03f410ab226686fe6cefb0a?width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fbf7534eca03f410ab226686fe6cefb0a?width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fbf7534eca03f410ab226686fe6cefb0a?width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fbf7534eca03f410ab226686fe6cefb0a?width=783 783w\" sizes=\"(max-width: 638px) 92vw, (max-width: 998px) 29vw, 56vw\"\u003e\u003c\/picture\u003e\u003cdiv class=\"builder-image-sizer css-10ytbmo\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-9c0ee8c80f1e4d3b95a3ccf86dfb5092 builder-has-component css-hgfgng\" builder-id=\"builder-9c0ee8c80f1e4d3b95a3ccf86dfb5092\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eCOMFORT, LONGEVITY \u0026amp; SERVICEABILITY\u003c\/h3\u003e\n\u003cp\u003eASTRU is engineered for extended, fatigue-free listening sessions. 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