It's a gimmick. I just sold my tiamat 7.1 as I was extremely disappointed. It didn't have the bass or the highs I would expect from such an expensive set of headphones. I don't play FPS, so I can't really comment on how well they alert you to enemies from behind, but I would not recommend them based on the sound quality alone. Also, the mic is garbage on them. Constantly had ppl complaining about my voice quality.