Akai Professional MPD218 | MIDI Drum Pad Controller with Software Download Package (16 pads / 6 knobs / 6 buttons) Simple, small, feature-packed pad controller for finger drumming and music production 16 Thick Fat backlit MPC pads (48 assignable pads accessible via 3 banks) 6 control knobs (18 assignable knobs accessible via 3 banks); Macintosh: 1.25 GHz G4/G5 or faster (Intel Mac recommended), 1 GB RAM (2 GB recommended), Mac OS X 10.4.11 (10.5 or later recommended) USB-powered through computer, no AC adapter required Includes free software titles Ableton Live Lite, Akai Pro MPC Essentials, SONiVOX Big Bang Cinematic Percussion and Big Bang Universal Drums