For sound quality on it is a good product, javais used a Sennheiser headset thoroughly bass! But it is properly balanced, sometimes even low is sought! The habit of Sennheiser I guess! He gives may be a little hot to the contour of the ears but it is not bad!
Finally the strength seems to me correct! rubber contour ears can move it to fit the ear by a small squeak quite normal to have prices!
A good helmet and low price just right!
