now the dpx21 may sound nice, but it is by far the worst thing i put on my head.
they broke in 5 months
they hurt your ears
sound is ok
very cumbersome
another thing is with the mixamp it has its own frequency response (35-20,000 hz)
so any frequency outside the range wont be heard.
but dont take my word for it, better frequency ranges most likely show a higher quality driver. look for a headset with good soundstage, and good seperation