Akai Professional MPK25 25-Key USB MIDI Keyboard Controller with MPC Pads 25-key, 12-pad, 12-knob USB MIDI keyboard controller delivers groove-infused command over computer-based digital audio workstations, sequencers, and more 25 full-size, semi-weighted keys with aftertouch deliver amazing performance note after note 12 genuine MPC pads for legendary percussion programming capability Eight Q-Link knobs for controlling virtually any MIDI-assignable parameters in software MMC/MIDI transport controls keep you in command of your DAW without having to touch the computer mouse Built-in arpeggiator provides melodic inspiration and versatile patterns for modern music production Plug-and-play USB connection for Mac and PC; no driver installation required. Perfect for Pro Tools, Logic, Cubase, Studio One, Reaper, Digital Performer, Ableton, etc