I have a cinema man, his pulse and I intend 5.1 and dts well distributed. With the Sony headphones is not the same effect, but by-cons, the sound is very pure and powerful, its quite addictive, really disappointed, the bass you want in voila, a sound like I never heard with another helmet. Were not in a movie theater. Optical Connections RCA, that's good. Functions for a sound that suits you. A beautiful product, well finished, not unpleasant to wear. Very Satisfied. His passes through two concrete walls army of 15 cm thick. I recommend it highly helmet.
