Due to my dwindling funds over the years, I could not afford to fix my headphones and amp which slowly stopped working over time. I eventually threw them all in a cupboard and forgot about them.   I recently pulled them out and want to start enjoying them again. I have found the problems and...

It looks like one of the tiny connector contacts (female) have pushed through inside on the right speaker. It's where the 2 gold plated pins from the headphone cable fit into. I don't know how to get into the unit to see if it can be fixed. It has been giving me some trouble for a while now, but...

I have both these headphones. I listen to them through my PC's Audigy 2 sound card. The 580's cable has died, but it works with the 650's cable. I am interested in a headphone amp and source to get more from these. Is it worth the investment?