This where I get confused, a DAC by itself is not a network player is it? , Therefore does not need to be Roon Ready. It could be Roon Tested. I have 2 Chord Dacs one claims to be tested the other not. The older Chord Qute HD is listed as unidentifed in audio setttings but works as intended attached via USB to an RPi4 running Ropieee. Perhaps I’m lucky but I guessed since it’s accepted by the Linux ALSA driver all is well.