I purchased a pair of ATH-M50's and I was only using a pair of AKG 518 headphones. I don't know if my expectations were too high or they are overrated? The only thing that comes out from songs is the overpowering treble, overshadowed mids and very very weak bass. I can't even hear bass at 20hz. This song has very powerful low bass http://www.youtube.com/watch?v=FonmhUBsXOY and I can barely hear it on my M50's.
The sound doesn't feel alive, the vocals feel very strange. Too much highs i guess. Or am I too used to crappy headphones as the AKG 518 and I don't know what good sound like?
Also I'm not using an amp. I'm using my iphone 4s together with 320 kbs mp'3 together with Google Play Music on my iphone.
Am I crazy for not going with the Beyerdynamic DT770 80 ohms instead? I haven't tried them either.