The complete Behringer System 15 as in the original Moog System 15. Only extras added: Pico Out (so you can use your headphones), Endophin.es Milky Way ( so you can have onboard reverb or echo), and Behringer CM1A ( so that you can connect a keyboard to the system via MIDI to CV). All fitted like a glove inside an 84HP 9U. :)