We recently had an issue with a headphone, I believe it was a PS2000e. The user was hearing distortion and kept sending the headphone back but we couldn't find anything, we eventually swapped out the headphone, same problems. We had the user check some other components, they found a problem with a different piece that wasn't picked up by other headphones. When the problem was fixed the distortion was gone. There are many things that can cause a problem, and increased detail also means you hear more of the imperfections in your source or possibly other problems within the system. Nothing is perfect and that includes our cartridges and headphones, and we have problems with some pieces that go out, we do our best to trouble shoot and correct what we can. Its all we can do...