No problem. Please keep in mind I am a fellow user like yourself so I can’t check your logs for additional information. Also, MacOS is not my primary used OS.
It is unusual that if you set the output device for Core Audio to the USB DAC that it doesn’t work. Which leads to some other questions.
What DAC is it? Can you play audio to the DAC from other sources?
The DACs software, MacOS, Roon?
Sometimes resetting RAAT can work things out, copy/pasted from an older support thread with similar issue.
Then a reinstall of RAATServer (program used to keep track of audio devices) needs to be reset. You can generate a new RAATServer instance on your device by following these instructions, but please be aware that this will reset your Roon Settings → Audio Tab to factory settings and I would advise making a backup of any custom DSP settings you have:
- Create a Backup of your current Roon database
- Exit out of Roon
- Navigate to your Roon’s Database Location
- Find the folder that says “RAATServer”
- Rename the “RAATServer” folder to “RAATServer_old”
- Restart the Roon App to generate a new RAATServer folder