Been using this quite for sometime now, makes the headphones sound a bit better(flat), refined.

I used them 2 years ago and when the left phone stopped sounding I threw them somewhere in my store room. Yesterday i found them while cleaning the room and I was glad too as I was about to buy some cheap iems like these for the bedtime. I thought that I should give them a try by replacing the...

Yeah enjoying px 100 ii :) best thing about this purchase is that i got it for $49 :P :)

Thank for replying mate :) actually i talked to sennheiser customer service and they too said its fine to use the product no issue with service what so ever. So finally i can open them :)

I lately purchased a px 100 ii from a online sellar and he sent me 2 years old manufactured piece (dating may 2012) should i return them immedieatly or is it ok to use them (they are seal packed)   Please reply as soon as possible as there is only 5 days time for return.