The iRig PADS USB-MIDI Pad Controller for iOS, Android, Mac, and PC from IK Multimedia is a portable MIDI pad controller and groove production station for your iPhone, iPod touch, iPad, Mac, PC, or Android device. It features 16 velocity sensitive drum pads that light up in 3 different colors depending on how hard they are hit or if MIDI data is received. Additional control is provided via 2 MIDI knobs, 1 slider, and a push-button rotary encoder, all of which are user programmable.