From semi-intra koss that leave too pass background noise I bought this helmet for daily use in my commuter train connected to my notebook. I expected it to be insulating and light on these 2 points and it is excellent. Despite its size, related to the concept of circum-aural headset that covers the ear rather than being placed on it, Sennheiser is quickly forgotten once worn and insulation is really effective, almost nothing comes to disturb the listening except the crossing of another train, enthusiasts will appreciate. As for the sound it is balanced, not saturated low, it will probably use the equalizer to certain type of music, in particular the high and very present in the media. So he has a job in music as in video. I have not tried to play with. In weakness I find it shakes head from an hour of listening but then perhaps this is the shape of my head is in question;)
