Have long wondered, for a price and then ordered yet because of other reviews. First, an opera by Verdi to determine how to listen to the heights. Class: very clean treble and surround sound which I could have never perceive at inear- Kopfhoerern (!). After this rock, techno, just only class. Finally a headset that is not occupied the songs with bass, where not belong, but lets you hear where that is. The seat is also great, I can move freely, they do not fall out and not push, also I can still perceive the environment. Delivery by Amazon as always exemplary!