Oh, I see. I'm not completely sure, but I think that by hooking up the headphones while playing music through the power amp/speakers would really mess with some things since they are both using the same circuit. Kind of like when you plug two headphones into the same amp and the impedance gets chopped in half. If you'd like to see pics of the internals, send me a PM. Kevin Gilmore posted them up on here at some point, but I'm not sure what thread they are in. It should make you feel better about the shape of yours, as I'm betting mine was worse.