This is a vintage 1990's ZETA Synthony MIDI Controller with Synthesizer & MFS 40 Footswitch. This unit will work with any ZETA violin or viola featuring the multi-pin DIN output. This unit along with the MFS-40 Footswitch brings a violinist with a ZETA violin (four or five string) into the world of MIDI performance and recording. The internal synthesizer features GM general MIDI. Layers can be achieved using the hold and sustain foot switch. Very creative sounds can be followed from the violin with this unit. It features a headphone jack on the front and line out on the back for the violin and synthesizer with a unique mix control from the violin. Compatible with all ZETA MIDI capable violins and violas featuring the multi plug output on the side of the instrument next to the 1/4 inch audio jack. This unit was fully tested and has a new coin cell internal memory battery. This unit features the final software revision 4.8 that was available at the time (see photo displaying "48" on power up). The manual is included along with the power supply, multi-pin DIN cord and stereo cord for the MFS-40 Footswitch. A complete system in good, clean condition. Please look over the photos carefully as they are part of the description.