I followed the opinion on this helmet before you buy it and it is true that for listening to funk, rock, soul, roots it's best !!! After to ragga, jungle, drum and bass and electro he frankly not bad at all. I see why some people still want more bass. (When you convert your CDs, do not believe in a sampling 128Kb give you CD quality, same for the sound quality of an encoded concert) The bass are precise round. It's not drool !!! The voices stand out well without encroaching on the rest. Treble are clear and do not saturate the flickering cymbals of the battery. (It not break the ears) On some more expensive helmet is much worse. For Philips this is not the case. (The power is good but when you distinguish more flickering cymbals when a deep bass suddenly happens is deplorable and when the voice covering rhythm guitar, it's pity) The cable can be said that there is no surplus, but it sounds right diameter solid. (Long term we will see) isolation I can not permissible to very precise because I tested it at home, it seems not bad but it's going etres different in the metro, but I think it's going to. If you want a top isolation must type in luxury or heavy good. I recommend it highly. Good manufacture everything seems solid and comfortable. For the price I am not at all disappointed, quite the contraire.Je could not put 200 euro for now.