About the Douk Audio U2 Digital Interface DDC with XMOS XU316 USB to SPDIF Converter
From the product page on doukaudio.com.
Lossless USB to S/PDIF Converter: Convert USB signals from PC, laptops, phones, tablets, and Raspberry Pi etc. to optical/coaxial outputs simultaneously with zero loss and no latency. Ideal for DACs, digital amplifiers, or home theater systems that only support S/PDIF input.
XMOS XU316 Chipset for Hi-Res Audio: U2 supports up to 24bit/192kHz PCM and DSD64 (DOP) playback. Enjoy lower jitter, cleaner signals, and rich audio detail—perfect for high-end music systems and audiophiles.
Plug-and-Play Simplicity: No driver needed for PCM playback on Windows 10+ and macOS. Includes a dual-head Type-A/Type-C to Type-C cable for easy connection, fully OTG-ready for phones and instantly usable.