Reppo II Boombox Backpack

Reppo II is a hardshell boombox backpack designed by Joonas Saaranen. It has integrated speakers and a high quality digital amplifier to give you and your group a musical experience that any other portable MP3 player in the market fails to provide. This music backpack is powered by a small rechargeable battery that provides sufficient juice for hours of playback. You just need to plug in an audio source, like an iPod, and let everyone hear what you are listening to. link