USB DAC compatibility List

Name: Cambridge Audio Azur 851N
Receiver: USB Receiver using Class 2 USB Audio mode
DAC: 2x Analog Devices AD1955
Async: YES
Working with Volumio: YES
Tested Versions and Platforms:
    Volumio 2.917 / Pi 3B+
    851N service package v022-a-103+a / firmware 1.10+0.5+8e
Harware Mixer on Volumio: NO
Comments: DAC displays PCM 192 kHz with DSD direct setting, and DSD with DSD over PCM (DoP). Apparently that is due to the fact that 851N supports only DSD-over-PCM via USB and DSD direct is not supported