Akai Professional MPC Studio Music Production Controller

Barely played and comes with original box, packaging and cables. Top-tier midi interface.

This is a great interface to run in a DAW and is powered through a computer. I had a lot of fun using it with Ableton to create beats using this software plugin:

It is worth $200 new.

From Guitar Center:

The Akai Professional MPC Studio music production controller brings the total MPC experience to your computer by combining intuitive hardware control and innovative, inspiring software. Load a loop from the library, chop it into samples, lay down a beat, then play instruments over it to add more melodic textures. Add some insert effects to develop your song structure and arrangement, or to build drops and transitions.
Premium Pads for Perfect Production
Pad performance is the top priority for any beatmaker. Velocity-sensitive RGB pads mean maximum expression, whether you’re playing soft melodies or booming kick drums with colored visuals to keep track of your velocities and pad groupings. Switch from Note to Chord Mode quickly and build out your tracks right as inspiration strikes. 
Assignable Touch Strip Control and Expression
Create your own signature sounds with the assignable touch strip.
Color Screen for Vibrant Feedback
When you’re locked in the creative moment, the vibrant color screen ensures you can keep your hands on the MPC Studio and your focus on the music.