The All New and Exciting Line of BadAax Keyboards is finally here! All the latest and state of the art technology is incorporated into the new BadAax OR Series of keyboards! With the BadAax OR61 MIDI Controller Keyboard and its 61 full size keys, 8 MIDI assignable control knobs and 8 MIDI assignable control sliders, creating music couldn't be easier! Just plug the USB (which also works as the power supply) in to your computer and you're ready to go! The OR61 MIDI Controller Keyboard features include: 61 full-size touch sensitive keys, 10-note Polyphony (reverse priority). Controller buttons: 8 MIDI assignable controller buttons, 8 MIDI assignable controller sliders. Overall controls: Data Entry slider, Octave Up, Octave down, Pitch and Modulation dials, MIDI/Select. Connections: USB Port (for power supply and MIDI), Sustain, MIDI Out. Power supply: MAC or PC USB port, 9 Volts Adapter (not included). Software support: MAC OSX, Windows XP, Vista Ready (no driver needed).