M-Audio Axiom AIR 25 25-Key USB MIDI Keyboard Controller with Ableton Live Lite and Ignite by AIR Keyboard controller with 25 expressive synth-action keys and aftertouch 16 great-feeling trigger pads respond to pressure and velocity Made for expressive performance: roll button aids in creating realistic drum parts 8 rotary encoder knobs plus 1 long-throw 70mm fader 3 banks of pad and knob assignments with color-coded illumination Selectable velocity curves to match any playing style plus assignable pitch bend and mod wheels