ridhuankimHi. Yes it still falls of.. not readily mind you but not too hard to do either. I wear my hd 820 mobile dac/amp a lot of times like cooking or cleaning and for most they stay because I’m wearing them. But as soon as they are off one side falls off. No big deal. As for sound, yes they do alter the signature and I think all the types except for perforated increase the base. The perforated to me sounds less desirable.