I know a lot of people have recently been buying high end headphones. I bought some ath m50's a while back and tried out a few headphone amps. Well I think I finally found a winner. I bought a jds labs cmoybb v 2.0 3 last week and it slams. I have it hooked up to my Droid rzr maxx and also tried it out on an iPod. I'd you've spent the money on a good pair of headphones you really need to try out an amp.
Thought I would pass along a review.