Yuan Jing Audio - XMOS U8 USB Audio 32Bit / 384KHz USB to I2S Converter Daughter Board - USD $42.50
New Xmos Xu208 U208 Usb To I2s Iis Dsd Converter 384k Xmos Xu208 Usb Digital Interface Module For Dac,amazing Sounding - Home Theater Amplifiers - AliExpress
XMOS 384kHz DXD DSD256 high-quality USB to I2S/DSD/SPDIF PCB
DIYINHK XMOS Multichannel 32ch USB to/from I2S/DSD SPDIF Interface | Dimdim's Blog