{"product_id":"gustard-u18-usb-interface","title":"GUSTARD U18 USB Interface","description":"\u003ch1\u003e\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cstrong\u003eUSB audio interface and precision digital-to-digital converter\u003c\/strong\u003e\u003cbr data-start=\"183\" data-end=\"186\"\u003e\u003cspan\u003e\u003c\/span\u003e\n \u003c\/h1\u003e\n \u003cp\u003e\u003cspan\u003eThe U18 is a high-performance USB-to-digital interface designed for audiophiles who want cleaner, more accurate signal delivery from their computer to their DAC. With full galvanic isolation, a second-generation K2 clock, CPLD signal shaping, and support for PCM up to 768 kHz and DSD512, it eliminates USB noise and jitter while preserving timing and detail. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eNext-level USB processing with XMOS XU216\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003ePowered by a 16-core XU216 USB receiver from XMOS, the U18 handles native PCM up to 32‑bit\/768 kHz and DSD512 smoothly, resulting in robust, high-resolution performance.\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eComplete grounding isolation for cleaner signal\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eA dedicated 200 Mbps galvanic isolator severs any electrical connection to your PC, removing potential noise from USB ports and grounding loops, so what reaches your DAC is purely digital data. \u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eK2 ultra-low-noise clock with external reference\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eThe built-in second-generation K2 clock synthesizer, supported by dual Accusilicon AS338 oscillators and powered by a low-noise LT3045 regulator, delivers jitter as low as 38 fs—ensuring stable timing and tighter bass. You can also feed in an external 10 MHz OCXO reference if preferred. \u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eCPLD signal shaping to reduce jitter\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eAn onboard CPLD reshapes the isolated I²S signal, removing timing errors introduced by isolation. \u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eVersatile high-resolution outputs\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eConnect via optical (TOSLINK), coaxial (SPDIF), AES\/EBU, I²S over HDMI, or word clock (BNC). I²S pinout offers four configurable modes to match most DACs, with full support for PCM768 and DSD512.\u003cbr\u003e\u003c\/p\u003e\n \u003ch3\u003e\n \u003cstrong\u003eProduct highlights\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n \u003cp\u003eNative USB input (XU216) with 16-core architecture\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eGrounding isolation via 200 Mbps galvanic barrier\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eK2 clock synthesizer + twin AS338 oscillators (38 fs jitter)\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eSupports external 10 MHz OCXO reference\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eCPLD-based I²S signal reshaping\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eOutputs: TOSLINK, coaxial, AES\/EBU, configurable I²S via HDMI, word clock BNC\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003ePCM up to 32‑bit\/768 kHz; DSD512 native\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eFour I²S pinout mode\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n \u003cp\u003eUSB Input: XMOS XU216, native DSD512\/PCM768\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eIsolation: 200 Mbps galvanic USB barrier\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eClocking: K2 synthesizer; 2× Accusilicon AS338 crystals; LT3045 regulator; ≤38 fs jitter\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eCPLD: Altera MAX II for I²S jitter shaping\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eOutputs:\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e\n \u003cp\u003eCoaxial SPDIF (75 Ω, 500 mVp-p)\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eAES\/EBU (110 Ω, 2.1 Vp-p)\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eOptical TOSLINK (≤24‑bit\/192 kHz via DoP64)\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eI²S (HDMI LVDS, PCM768\/DSD512)\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eWord Clock BNC (3.3–5 Vp-p)\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eConfigurations: 4 user-selectable I²S pinouts\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eClock Input: 10 MHz BNC (0 dBm)\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003ePower: 115–230 VAC; \u0026lt;10 W consumption\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eBuild: Toroidal transformer, chassis dampening\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eDimensions: 220 × 170 × 50 mm\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eWeight: ~1.9 kg\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eWarranty: Typically 1–2 years depending on region\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003e\n \u003cstrong\u003eWhat’s included\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n \u003cp\u003eGustard U18 unit\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003ePower cable\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eUSB-A to USB-B cable\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n \u003cp\u003eUser manual\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e","brand":"Gustard","offers":[{"title":"Black","offer_id":46866219925679,"sku":"APS-1072-1","price":499.0,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":46866219958447,"sku":"APS-1072-2","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/apos-audio-gustard-gustard-u18-usb-interface-1176335187.webp?v=1777716348","url":"https:\/\/freshized.com\/products\/gustard-u18-usb-interface","provider":"Freshized","version":"1.0","type":"link"}