I'm not sure the tubes can get blocked with these earphones? I just rotated the wires over that didnt solve the problem and it is'nt intermittent.

Yeh I'm trying to get in contact now, could it be something as simple as a replacement wire or is it more likely to be worse than that?

Ive had my Sennheiser IE80s for about a month and have just started to notice the right earphone is starting to become quieter and was wondering what could cause it. I bought the earphones off eBay and they are genuine but dont know what I would need regarding the warranty if they are broken.