Polyphonic guitar synthesizer. Requires Roland GK-3 hexaphonic pickup, available for an additional $75. MIDI out allows you to expand your range of sounds by controlling another synthesizer or even a software synth such as Garage Band via MIDI-USB adapter. Google GR-09 for demo videos and whatnot. Includes manual, power supply and GK cable. Price firm, cash sale, pick up only. Thanks.