Ugh no bueno. I have Sennheiser ie900 they I think are 16 ohms. That would explain something. I haven’t had much time, but I’m curious to see if I could just swap in the old LCD audio board.

Just saw your other response about the iem sensitivity.

It’s the inner metal frame that adds a lot unnecessary weight. I’m not sure why they need it. If you open up an Ally, they get away with not having one. Moreover, I don’t even think it helps the structural integrity of the Steam Deck because both LCD and OLED versions I own has shell misalignment and weird creaky issues.

I wonder if I could swap the old board with the new. They aren’t the same, but worth a shot.

Maybe it’s just software. Did you try on a preview/beta build too?