the headphone is somewhat unimpressive at first.
then, I turned on DFX for media player 9, the sound is much much better, it sounds quite good. I am guessing the DFX turns up the dynamic range, so the low frequency/high frequency responses are activated..
I think this headphone probably needs some kind of amplification for it to sound the way it should.
this headphone is very comfortable.. i am happy with it. Without DFX, however, I would be disappointed.