This helmet is absolutely EXCELLENT! The sound is perfect: the highs are reproduced correctly. They are fine and perfectly proportioned without being too aggressive. The bass is really impressive! Nothing like headsets that play bass sounding cardboard. Here, the bass is pure, round, very deep. It is perfect for listening to electronic music / pop-rock. No rating for classical. (I have not tested)
Side comfort, the headset is very comfortable to wear. We forget that we have a headset on. It is soft, light, very comfortable.