Really not bad.
The Plus
Very good sound reproduction, impeccable comfort in the ears and on the head.
Very good microphone, even though it's more of a high midrange, with almost no bass. It's less flattering, but it sounds better in the middle of a game.
Changeable pads and a good choice of spare parts on the epos site,
The minuses
The cable is a bit short.
The knob doesn't cut the headphone sound completely.