HiFime UH1-Digital 384kHz USB to I2S/DSD/COAX interface (no DAC) - Hifime Audio
Yuan Jing Audio - XMOS U8 USB Audio 32Bit / 384KHz USB to I2S Converter Daughter Board - USD $42.50
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Hifime SPDIF Optical to USB converter, record DAT/minidisc to computer
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CM6631A Digital Interface 24bit/192khz USB to Coaxial Optical Fiber SPDIF I2S Converter DAC Board: Amazon.com: Industrial & Scientific
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USB to I2S converter AH-TX1-lite-v1.0 - Share Project - PCBWay
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Douk Audio Hi-end Italy Amanero USB Audio Interface Digital USB to I2S COAX Converter 384K DSD512 DAC _ - AliExpress Mobile
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USB to I2S converter AH-TX1-lite-v1.0 - Share Project - PCBWay
DENAFRIPS Iris USB Digital to Digital Converter USB to I2S, AES/EBU, SPDIF Toslink - YouTube
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HiFi USB Digital Interface S/PDIF AES/OPT/I2S Audio Converter DSD1024 PCM768 | eBay
L.K.S Audio LKS USB-100 USB Audio Interface PCM384/DSD512 I2S RJ45 HDM – Audiophile Shop
Douk Audio U2 XMOS XU208 Digital Interface, USB to TOSLINK Coaxial/Optical Audio Adapter, for DAC/Preamp/Amplifier, Support PCM & DSD64 (Upgrade Version): Amazon.com: Industrial & Scientific
Yuan Jing Audio - XMOS U8 USB Audio 32Bit / 384KHz USB to I2S Converter Daughter Board LP - USD $39.50
Study: Is I²S interface better for DACs than S/PDIF or USB? | Audio Science Review (ASR) Forum
