M-Audio Axiom 25, 25-Key Advanced MIDI controller keyboard, 25-key velocity-sensitive semi-weighted action keyboard with assignable aftertouch, 8 trigger pads, 8 rotary encoders, 6 reassignable transport buttons, backlit LCD screen, built-in USB bus-powered MIDI interface including standard MIDI In and Out jacks, 20 non-volatile memory locations; compatible with free Enigma librarian/editor software