This thing is beast! Plug in to your Mac or PC to use software instruments and also has a built in audio interface so you can plug in your guitar or microphone(48v phantom power too for studio mics!) and record into your computer. Has the latest firmware so you can program the velocity of the drum pads(great for hip-hop/trap/edm sampling!). Touch sensitive mod wheel and octave control. Syncs instantly to Logic Pro X and Protools. Works with every DAW, Cubase, Ableton, FL Studio etc. Powered directly from your computer no power supply needed. But also runs on 4 AA batteries so you can record on your iPhone/iPad anywhere an idea may pop up! One owner loved and cared for! Only getting rid of it cause I just upgraded to an interface with more inputs. Would consider trading for a 7 string guitar, or a guitar with good pickups/neck for metal styles of music. Sells for 299 plus tax. Yours for $200 cash Thanks for stopping by!