This synthesizer was made by Yamaha in Hamamatsu, Japan in 1986. It is a Digital Programmable Algorithm Synthesizer, Model DX-7 Serial #82395, with 61 keys. Tis synthesizer is fully programmable with 32 preset voice/paramater sounds. The keyboard has an LED and LCD display panel, mode select and editing control section , volume control, data entry section, pitch bend wheel, modulation wheel, headphone and breath controller jacks, and a voice cartridge socket for RAM and ROM cartridges. Accessioned with user’s manual, ROM and RAM cartridges.