I've got an excellent condition Sennheiser HD558 set, complete with 3.5mm adapter and original packaging. Lovingly cared for in a non-smoking home. There's my mother's pet dog around lately that I'm taking care of, but the headphone doesn't have dog hairs (they would be obvious because they are white and the headphone is black, lol).
I removed the foam tapes from the cups and added Dynamat Xtreme to the rears of the drivers. I can fully reverse these changes at your request without leaving any trace of them having been modified.
The previous owner didn't even open the box, he kept the headphone as a spare.
I wanted to hear what these are like, and now want something different.
Edited by Mad Max - 4/16/13 at 11:49am