Twelve South BassJump 2 for MacBook | Portable add-on subwoofer for MacBook
Designed exclusively for MacBook, BassJump 2 is a sweet, one-of-a-kind, go anywhere, USB-powered subwoofer that turns your MacBook into a mini sound system. One single USB cable delivers power and sound. Custom software blends the music coming out of your built-in speakers with the sound output of the BassJump for dramatically enhanced audio performance.