DJ GO is a design concept by Continuum for a portable system containing 2 mp3/CD turntables and a mixer, combined into one unit that can fold up and turn into a carry bag.
The DJ Go’s internal hard drive stores thousands of songs inside the device, eliminating the need to carry vinyl, CDs or iPods. The intended users are beginner to professional DJs who are looking for a more nimble, convenient and efficient way to carry around their DJ equipment and songs.
It is used by hooking the device up to an amplifier and speakers, and plugging it in with a basic AC power cable.
I’ve seen much more portable DJ gear, like the Tonium Pacemaker, but this is a much more interesting combination of portability and usability.