I agree with all the previous speakers with regard to sound and sound.
The game experience like BF3 gets new dimensions, cinematic experience like Star Wars (zbPodrennen) is just awesome violently.
I would never look back without 5.1 and with such bass movies or listen to music .. TOP
Now the bad news.
The lesser evil are probably the much too short cable.
After 3 months my satellite VL began to rustle and stopped going since. The reason was the amplifier.
I wanted a guarantee there is not claim, because I did not want to pack up an hour long all.
But to cast. 4 months crackled suddenly everything and my subwoofer was smoking from .. Totaler death as seen in the video.
The unit was as requested, far enough prepared by PC and other electrical equipment.
Maybe I had just a Monday device, but I will not recommend it again or buy things from Logitech
which have something to do with sound.