Hello,
the left driver on Pro 900 rattles when I play bass heavy music, sometimes on some heavier rock/ metal songs too. But only when I adjust the volume.
It's fine when I don't touch the volume, but as soon as I adjust the volume it rattles and when I stop adjusting it settles down. It doesn't matter if I listen very loud or "normal" listening levels.
I wonder if this is common with Pro 900 (or any other headphone)? Should I be worried?
