I use this helmet now for a little over 4 years, and I find it great: there is no need to change the volume regardless of the environment (quiet as in the subway, for example), the volume did not need to be high because the soundproofing to the outside is excellent. The sound it is very good and warm.
By cons, and now THE black point, I think I have used at least 5 or 6 helmets, each dropped after 4 to 12 months, and it is getting worse with the new. The son welded into the headphones are crumbling, and after a while we did the sound in one ear (because the thickness of 2 poor son is not surprising). To believe the other reviews on amazon.co.uk, all have this defect. This is not a defect, moreover, it is a design mistake.
It would be enough to add some son of copper, may be it would cost $ 0.01 more per helmet. Like all helmets have this kind of defect these days, it remains for us to buy 2 or more ... that waste of energy and matter ...
