Vintage 1980s Yamaha DX7 Programmable Algorithm Synthesizer w/original case & 2 ROM cartridgesMaker: Yamaha Model: DX7 Condition: very good Description: Vintage 1980s Yamaha DX7 Programmable Algorithm Synthesizer in very good condition with original case and originally included 2 ROM cartridges. The Yamaha DX7 was the first successful digital synthesizer introduced in 1983 and is one of the best selling synthesizers in history, selling more than 200,000 units. With its complex menus and lack of conventional controls, few learned to program the