I bought this DAC after this review. I have been using it for almost week now.
I have been struggling to get the USB interface working properly, when playing via roon, with a variety of products. It seems to work if connected to a Windows 10 PC or Laptop, but I do not use this DAC that way as it is hooked into my main audio system not a desktop system.
Products I have tried that exhibit problems via the USB interface are:
1) SOtM sms-200 neo
https://sotm-usa.com/products/sms-200-neo-network-player
2) Sonore miroRendu
https://www.sonore.us/microRendu.html
3) roon Rock
https://kb.roonlabs.com/Roon_Optimized_Core_Kit
4) ropieee
https://www.ropieee.org/
Problems with the USB interface are:
1. USB Interface lockup playing MQA files. MA DAC when playing MQA files via roon with DSP or Volume leveling engaged, going from 96K to 192K will lock up and play silence until the USB interface is reset.
2. USB Interface playing 176.4K and 352.8K files causes heavy distortion on music.
3. USB Interface playing DSD after 44.1K files caused static to play for 6 seconds before DSD files plays normally.
Just wanted to let people know if they are planning on buying this DAC and using it outside of the Windows 10 environment with Matrix custom USB drivers, these are some of the issues I have found. All issues have been reported to Matrix Audio, but I am not sure if they are fixing them or they think that all the other products need to provide their own fix.
All the other interfaces IIS, Coax, and AES seems to work perfectly.