DESCRIPTION:
Read more about the Yamaha DX7 at http://encyclotronic.com/synthesizers/yamaha/dx7-r1/

The Yamaha DX7 is a FM Digital Synthesizer manufactured by the Yamaha Corporation from 1983 to 1986. Tone generation in the DX7 is based on linear frequency modulation synthesis (FM) based on research by John Chowning at Stanford University.