These are so sick!
Buy them here,
Sensation55 Driver – The Sensation55 is Skullcandy’s patent-pending bass extension driver. Through this driver, the Crusher delivers a powerful and realistic bass experience that transforms your audio into bass you can feel.
•REX40 Driver – The REX40 is designed from the ground up by their world-class audio engineering team and delivers an extremely smooth frequency response with minimal distortion – tuned for your playlist.
•Acoustical Porting – Within the construction of the ear cup, our specially designed acoustical porting allows both drivers to move freely, increasing the bass and reducing distortion.
•Built-in amplifier – No more bulky in-line amplifier. The new Crusher draws its power from a premium battery (AA) powered amp hidden in the ear cup.
•Adjustable Bass Control – The bass sensation slider on the left ear cup allows you to adjust the sensation levels to your preference or playlist.