OCC has published a review on the Zowie Gear Hammer e-Sports Headset

If the headphones provided decent sound isolation from the real world, and the high end response was a bit better, I would recommend the headset as the best you can get. As I've tried to stress in this conclusion, the shortcomings are actually minor, and I found the headset hard to fault. You can really tell a lot of thought, design and consideration went into developing the Zowie Gear Hammer headset, and it all paid off as Zowie Gear have produced a headset worthy of the professional gamer.

Zowie Gear Hammer e-Sports Headset Review