Douk Audio Mini Xmos Usb To Spdif Coaxial Optical Converter Digital Interface Audio Adapter Dsd Pcm192k - Home Theater Amplifiers - AliExpress
StarTech.com 7.1 USB Audio Adapter External Sound Card w SPDIF (ICUSBAUDIO7D)
Fanmusic FM6011 USB To Coxial Converter USB 2.0 Mini Digital Sound Card USB TO SPDIF Converter - Free Shipping - ThanksBuyer
Amazon.com: LiNKFOR USB to SPDIF Coaxial RCA and 3.5mm Headphone Jack Converter USB DAC Optical Audio Adapter USB DAC PCM for Windows Mac PS4 PS3 : Electronics
Micro USB TO SPDIF Converter Coaxial/Optical HA info PCM/AC3/DTS Support Source Output Hi Fi Amplifier| | - AliExpress
Review and Measurements of Gustard U12 USB to S/PDIF Converter | Audio Science Review (ASR) Forum
Douk Audio U2 XMOS XU208 Digital Interface, USB to TOSLINK Coaxial/Optical Audio Adapter, for DAC/Preamp/Amplifier, Support PCM & DSD64: Amazon.com: Industrial & Scientific