At first I was a little disappointed with this headset. Never owning on-ears before I found it hard to fit right.
Once I got them fitted properly, the sound quality is excellent for the price. There are no sharp highs associated with low end headphones and they have a solid mid to upper bass response. As they are not sealed around your ear you do loose the lower low end. Overall they have a very "pleasing" sound which is good for long stints at the keyboard.
The soft pads don't give you ear ache nor make your head TOO hot which is nice.
the braided cable doesn't conduct sound too much and you cant hear anything rubbing against is more than 30cm down the chord.
One problem I did find was that they have a tendency of sliding off my head if I look up or down too far.
I haven't tested the mic yet so i can't comment on that.
Overall, Very pleased so far.