Your DAC handbook will tell you if it works with Linux. If it says it does it is pretty much 99% guaranteed to work with ROCK and even if it doesn’t that may have been sorted since. Try it. If it doesn’t work come back and we’ll come up with a solution. But my guess is it will work. Also look at the “What DAC are you using with Roon” thread. If your DAC is in there PM the owner and ask.