I found out the hard way that these don't block out any outside noise. Part of the problem seems to be how low the volume is. So will a cheap headphone amplifier help at all?

I'm having a problem with my HD 595s where the left channel sounds louder than the right, regardless of the source. I've already opened them up and reseated the cable which seems to have helped for the most part, but the issue still somewhat remains. And yes, I've tried wearing them reversed and have had a couple other people check the balance too, so I'm nearly certain that it isn't my hearing. :) Is there anything else I should do/check before I send them away for...

Does anyone else experience popping and clicking when playing 'raw' sources at higher volumes? For example, i have an electric drum kit, and the bass drum, when the volume is increased, can make the headphones pop and click.