UR22C Headphone output is mono

[Y-D]

Update…
Found this comment on another thread:

@strummer

then it could be you are using a trrs plug (3,5 mm with microphone) with a trs adapter to plug into the 22c, as a lot fo the adapters and headphones don’t get the signals right.

Makes sense that a mismatch of trs/trrs jack and adapter could behave badly in some contexts (while still working fine in others).
Eventually, I’ll get to the bottom of this…