J used this headset for about 2 months (170 in a store).
for use guitar amp and headphone / simulation hp (guitar gibson cs356, Ibanez JS1 / DC30 Mesa Boogie amp, marshall 30th anniversary).

I was looking for the sound produced by the HP and above all respect the personality of the guitar.
-The tone of the instrument and the characteristics of the amplifier are well preserved (with a little less heat and slightly less type) but c is really very good!

- It is light, comfortable, not need much volume.
sound and light not aggressive rather neutral, not that hides all low.
for listening to MP3s on pc it does not forgive. he respects good music.
I can compare a pc headphones / audio 30 60 + Max a former high-end.

- For the sensitive people REMBOURAGE generates a small effect of contact style slight perspiration, after several hours of removing the need. too flattering to some music. not very useful for everyday use tv, pc, hifi bottom line.

I am very pleased with this headphone, knowing that I am not a specialist studio / mixing. + damage it lacks comfort for 10/10.