https://bugs.winehq.org/show_bug.cgi?id=46103
--- Comment #2 from patoplc@live.com --- Driver is winecoreaudio.drv. Output device is (System default), which in my case are wired headphones.
(Off-topic: I have updated to Wine 3.21-staging, but I have since uninstalled the game, so I cannot test right now if anything changed with this build. Might be able to do more testing in mid-December.)