Ah yes, you can also literally bend them with your hands if your comfortable doing it, plastic headbands are trickier, but i know the HD25 would take it.
New pads for your 650’s should bring them back to life alright, although sennheiser tend to charge a premium for it, but it’d make them sound “new” again.
Yea sorry, it’s an instant reaction when discussing headphones. Thomann/Amazon have great return policies on audio stuff though, I don’t particularly like doing it but when something is just “wrong” you must.
Yea the TMA-2s may be too loud, they are 32ohm and judging from the rest of the specs easy to drive, but Im just assuming.
The HD25s are 70ohm and are a bit harder to drive.