https://bugs.winehq.org/show_bug.cgi?id=53799
--- Comment #7 from Jordan Banasik woovie+winehq@woovie.net --- There's some relevant information from https://github.com/geoffreybennett/alsa-scarlett-gui/issues/118 where I was initially asking for help due to a lack of fully grasping the error.
It appears this issue stems from here: https://gitlab.winehq.org/wine/wine/-/blob/master/dlls/winepulse.drv/pulse.c...
If you have more than 8 channels, it just fails. Perhaps it would be best to throw a warning and default to 2 channel stereo on channels 0 and 1 instead if greater than 8?