{"product_id":"douk-audio-u7-s-pdif-reclocker-with-src4392-asrc-and-femto-clock-192khz","title":"[Pre-Sale]Douk Audio U7 S\/PDIF Reclocker with SRC4392 ASRC and Femto Clock 192kHz","description":"\u003ch4\u003e\n\u003cb\u003e\u003cspan\u003e\u003cspan style=\"font-family: Times New Roman;\"\u003eFeatures\u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\n\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eUpgrade the Digital Link: Keep your current source and add dedicated S\/PDIF reclocking before the DAC. U7 attenuates upstream clock jitter and rebuilds output timing from a precise local reference, helping bring out more focused imaging, clearer separation and a more open, natural presentation. Especially useful with computers, TVs and general-purpose digital sources, or where timing or lock stability matters.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p\"\u003e\u003cspan\u003eSRC4392 ASRC + Femto Clock: At the core, U7 pairs TI Burr-Brown’s SRC4392 ASRC with femtosecond clocking in a high-spec reclocking architecture built for exacting digital timing. Oscillator jitter is below 39 fs, with instrument-measured THD+N at 0.000006% and SINAD at 147.2 dB—strong measured evidence of U7’s signal purity.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eChoose 96 or 192kHz Output: U7 accepts PCM up to 24-bit\/192kHz and lets you choose the fixed output that suits your DAC instead of being limited to one setting. Select 192kHz for high-sample-rate content to avoid unnecessary down-conversion, or 96kHz for DACs without 192kHz support, balancing high-rate playback with broader compatibility.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eSimplify Your Digital Connections: Keep optical and coaxial sources connected and switch between them without reconnecting cables. Whichever source you select, U7 converts and routes it to coaxial, optical and BNC S\/PDIF outputs, all active simultaneously—bridging interface mismatches and feeding multiple downstream devices from one source.  \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eEngineered Down to the Details: The compact aluminum chassis fits easily into desktop, shelf or full-size HiFi setups. Standard 5V USB-C keeps pow\u003c\/span\u003e\u003cspan\u003eer simple and leaves an easy path to a linear supply. Pure-copper, \u003c\/span\u003e\u003cspan\u003egold-plated coaxial connectors resist oxidation, while built-in overvoltage protection supports reliable long-term use.  \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\n\u003cb\u003e\u003cspan\u003e\u003cspan style=\"font-family: Times New Roman;\"\u003eParameters\u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\n\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eBrand: Douk Audio\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eModel: U7\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eDigital Inputs: Coaxial \/ Optical\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eDigital Outputs: Coaxial \/ Optical \/ BNC\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eSimultaneous Outputs: Supported\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eMaximum Sampling Rate: Up to 24-bit \/ 192kHz\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eOutput Sample Rate: Selectable 96kHz \/ 192kHz\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eReclocking Processor: TI Burr-Brown SRC4392 ASRC\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eClock: Femtosecond Oscillator\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eOscillator Jitter: \u0026lt;39 fs\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eTHD+N: 0.000006%\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eSINAD: ≥147.2 dB\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eSNR: ≥147.4 dB\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eFrequency Response: 20Hz–20kHz (±0.1dB)\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eInput Sensitivity: 0 dBFS\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003ePower Input: USB-C 5V\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eNet Weight: 235g \/ 0.52 lb\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003eProduct Dimensions (W × D × H): 95 × 70 × 35mm \/ 3.74 × 2.76 × 1.38 in\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003ePackage Weight: 443g \/ 0.98 lb\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003ePackage Dimensions (W × D × H): 190 × 160 × 60mm \/ 7.48 × 6.30 × 2.36 in\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" align=\"justify\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\n\u003cb\u003e\u003cspan\u003ePacking List\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\n\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003e1 × U7\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003e1 × Power Adapter\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003e1 × Optical Cable \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003e1 × USB Cable\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e· \u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003cspan\u003e1 × User Manual\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\n\u003cb\u003e\u003cspan\u003e\u003cspan style=\"font-family: Times New Roman;\"\u003eFAQ\u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\n\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eQ: My DAC has a femtosecond clock. Do I still need U7?\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eA: In most systems, yes.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eThe DAC’s femtosecond clock only covers D\/A conversion—it can’t fix upstream jitter or noise. U7 reclocks and regenerates the S\/PDIF before the DAC, so it receives a cleaner, more stable input and performs closer to its full potential.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eU7 is especially beneficial when:\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eYour source is a computer, TV, streaming box, or general-purpose player.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eYou use long or ordinary optical\/coaxial cables.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eYour DAC occasionally struggles to lock or sounds less stable.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eYou need optical\/coaxial conversion, sample-rate unification, or source isolation.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eQ: What does U7 do and where should it be connected? \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eA: U7 is a reclocker that cleans the digital signal before your DAC. Connect it as: Digital Source → U7 → DAC.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eQ: Does U7 support DSD audio? \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eA: No. U7 does not support DSD transmission. It supports 2-channel PCM audio only.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eQ: Why does my DAC not recognize U7’s output? \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eA: Make sure your DAC supports the selected output rate. U7 lets you choose between fixed 96kHz and 192kHz outputs to match your DAC; an incompatible setting may result in no sound.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eQ: My source is 24-bit\/96 kHz. Can U7 output 24-bit\/192 kHz to my DAC? \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eA: Yes, provided your DAC supports 192 kHz input. Set U7’s output sampling rate switch to 192 kHz.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eQ: Can I use all three outputs at the same time? \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003eA: Yes. The optical, coaxial, and BNC digital outputs can work simultaneously.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":67939286057192,"sku":"SUC-U7-US","price":149.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":67939286089960,"sku":"SUC-U7-UK","price":149.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":67939286122728,"sku":"SUC-U7-DE","price":149.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":67939286155496,"sku":"SUC-U7-AU","price":149.99,"currency_code":"USD","in_stock":true},{"title":"China","offer_id":67941197119720,"sku":"SUC-U7","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/13_3b406c7d-ea91-43cb-abe1-fff81dffb6bd.jpg?v=1792389657","url":"https:\/\/doukaudio.com\/es-ca\/products\/douk-audio-u7-s-pdif-reclocker-with-src4392-asrc-and-femto-clock-192khz","provider":"Douk Audio","version":"1.0","type":"link"}