The Bose® QuietComfort® Acoustic Noise Cancelling® 15 Headphones are the best performing headphones from Bose. Significant advances in noise reduction make these the quietest Bose headphones ever. Advanced electronics use microphones both inside and outside each ear cup to sense and reduce more of the sounds around you. So you hear even less noise, and even more of your music and movies - with the quality sound you expect from Bose.