There is a significant difference between when source boosts treble and when headphones have good response at treble frequencies. Try boosting treble for CX300II. The only thing you will get is lots of noise at frequencies lower from the one that you tried to boost.
My point is that M50 does not have good treble extension. That cymbal for example on M50 is very very far from real one simply because of noise produced because they are closed. On other hand A30 even if they use same drivers they are open, and because of that headphones don't introduce additional noise that was not in the signal, and this basically means more accurate bass and treble.
I'm still unsure if sound on A30 is distorted or maybe it is that clarity that other headphones are missing and this is why when you compare they sound distorted for you... For me they are definitely engaging, and really great for playing CS:GO
I was actually interested in Bayer, but after reading all these posts where people saying about exaggerated bass and recessed mids, it's not for me. I really want mids!
BTW I'm the guy who prefers sound of Q 2050i from Diamond 155. The guy in shop preferred Wharfedale, because he said treble on Q Acoustics are too harsh for him. So there are tastes and tastes Edited by koolas - 10/3/13 at 1:27pm