Notices hot! I purchased this headset yesterday.
I still spent a dozen hours to work with. And I'm thrilled! The sound is very good, I'm not sound engineer, so I can not explain very pro, but anyway I used it for different things and I was always pleasantly surprised.
Whether for listening to music, recording tracks clear or hyper thrash guitars, making computer music, etc.. Is nickel.

Well, the sound is good, of course, headphones are a bit expensive (a little over 100 €). But one great thing is comfort. One can spend hours with his ears open, you do not tire, we did not have his head crushed. Insulation is good, but it could be even better for my taste. (Well, I still took some time before I realized that my phone - which is located 20cm from my ears - ringing ^ ^)

The large class, a carrying case is provided. At the end of the cable (spiral), the adapter jack is screwed. Super convenient, but be careful not to lose.

I am really very happy with this model, which I recommend!
Sorry I can not provide more technical advice, words fail me, but you can try in any good music shop.