In short: a good quality price. Homogne over the entire range frequency drives, fairly neutral, although the bass is Submitted, but are not invasive like the Behringer 25 euros I prcdement silent and unbearable! !
To return the ATH-M30, I find it comfortable and lightweight, note that using my diskman, the sound is attnu I think it is of the impdance larger than a headphone discman.
I used to record my guitar on my PC (to make no noise!), And it suits me everything. Comes with an adapter jack 3.5 -> 6.35, the set is of good quality. I bought it at Music West 65 euro (including shipping and quick shipment!), There are about ten days and I'm glad trs, if I had a little more than I would finance took the AKG 240 studio, but hey .....