SMSL M8 DAC not working - HELP

I’m unable to get my SMSL M8 to work with my Pi Musicbox setup. Analog out works but when I switch to USB and plug in my DAC, I get no signal going into the DAC. Is this DAC not supported by Mopidy? I’ve gotten this DAC to work on the same Raspberry Pi 3b+ running Kodi. Any help would be greatly appreciated.

It recognizes the device as SMSL USB Audio, but I can’t get it to play any sound thru it. I’ve tested the DAC with my laptop and it plays fine.