If we were to use one word to sum up our first impressions of the Roccat Kave headphones, we'd say "chunky". If we had a full sentence, we'd say "oh no, not more surround sound headphones!"
Traditionally, headphones that attempt positional sound are awful, whether simulated or with discrete speakers. Primarily, it's an issue of sound stage and panning that's never quite been achieved correctly, particularly the transition from side to rear.
Plantronics sidestepped the issue with its, by making the surround sound optional in the form of a USB dongle. The headset's individual 3.5mm jacks could then be plugged into this USB dongle, which in turn could be plugged into the computer. Surround was turned on by a switch, meaning you could even have the convenience of USB without the effect if you desired.
A different path
The Kave's connections, on the other hand, can be best described as nuts. It's got a rather large brick hanging off its cable, from which a mass of cables spew forth like the kraken's tentacles: 3.5mm jacks for centre, front and surround speakers, another for the microphone and a USB cable.
The Kave's microphone can rotate a full 360° but is so flexible that you'd be hard-pressed to tell whether it's rotating or bending. Several times when intending to stow the mic up, it simply flexed instead. Ultimately it has the same result, but can catch you off-guard the first few times.