The sound of this Senheiser me totally convinced. Listening, it reveals little weakness, both in serious than in the treble, midrange despite somewhat stifled by low pretty impressive. Closed its appearance proves effective in noisy environments and comfort provided by the frame is highly appreciated during long sessions of listening. This however tends not tighten sufficiently, so that the helmet can easily fall at the slightest sudden movement: not worth to expect run or skate with. However, its construction which leaves me little puzzled, particularly in terms of its connections. Indeed, it seems too little protection for a headset in this range and left me apprehensive about the life of the tiny wire connecting the headphones to the jack. My first impression was good and it currently suffers from a poor contact making it unusable, slightly aberrant after 6 months of normal use.
