I bought this helmet following the many positive opinion of the trade press. I therefore confirm that the sound is good (as good as a helmet to 150 euros). By cons, comfort is not at the rendezvous! The headphones are too small compared to the size of the ears (she is crushed by the headphones and not enclosed) and the hoop exerts pressure on the ears which is hardly bearable. We can not stand this long helmet ... 10 minutes in my case. I do not recommend buying these headphones unless you can try.
