Hi,
I have the same problem (Passthrough greyed out) mentioned in this thread:
Justboom Digi Zero / Passthrough
My workaround will be to make an own file from the templates at gitHUB corresponding to my soundcard.
In post #7 is suggested to just change the name.
Will it be as simple as just changing the name or do I need to change something more and where do i put the file?
Also found this for setting DigitalOutput in Alsa. Something I need to do?