Hi, I am fairly very very new to audiophile stuff, but I'm really really eager! As a starter, I searched a bit and bought Audio Technica m50 this February...
The headphones sound perfectly fine, but I just took off one ear, and listened from each ear-piece seperately. I found that the sound in right speaker is slightly more warm, bassy, while the sound in left earpiece is a bit sharp and tinny. It doesn't sound bad at all, but i just noticed this. and the difference is although very notable, it is not that huge.
I listen to music on full volume nearly all the time. Is it a common thing in all headphones, or just m50, or mine are starting to wear out?