Crusher Tech: What is it? Ever wished you could actually feel the bass? To feel the bass, Crusher Tech uses the newest technology to shake your head. Use the bass slider to amplify your bass or slide down and listen to relaxing music. Custom Sound: The Crusher creates sound just for YOU after analyzing your hearing. After a brief test, the Crusher will be adjusted for you. We have developed our most comfortable headphones and added a new degree of comfort to the Crusher line. Epic Noise Cancelling: The Crusher ANC 2 actively mutes the outside world by using four microphones to listen to all outside noise. Additionally, you can change the noise cancellation level between hearing, mute, and between. 50-Hour Skullcandy's Battery