Heh!
I've been using Sennheiser headphones for years!
I think my HD-414 headphones finally bit the dust - crackles, like it has a broken wire somewhere - and these wires are usually the size of a human hair, and unrepairable.
However, my HD-416 headphones are still working great!
Perhaps, now is the time to upgrade...
Do you personally own/use these headphones?
BTW, in my experience,
THESE are the only things that wear out on my 'classic' Sennheiser headphones - have to replace them every year or two!
As a matter of fact, I've had this 'problem' with every headphone I've ever owned, so whatever you buy, make sure that replacement ear cushions are available - otherwise, you'll be throwing out your headphones and buying new ones every year or two, not just the ear cushions...
IMHO, this is where Sennheiser shines above the rest!
Go try to find ear cushions for 20-year old Koss headphones, or whatever...
EDIT
Hrm...
I don't see any
REPLACEMENT EAR CUSHIONS available for the RS120!
Maybe that'll come later. In the meantime, that's a deal breaker for me... :|