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
USB to SPDIF Converter Toslink Coaxial DTS AC3 PCM 3.5mm Jack + 1.5m Optic Cable 782500024617 | eBay
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Matrix X SPDIF 768ビット/khz dsd512 hifiオーディオusbインターフェイス|interface audio usb| interface usbinterface m audio - AliExpress