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Topic: Yamaha DX7IIFD Centennial Synthesizer

Jack Hertz

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Three improved "DX7 II" models were released between 1987 and 1989, all of which featured updated internal circuitry and a restyled case. These were the DX7 IID, which improved sound quality from 12-bit to 16-bit, increased the internal patch memory and allowed bi-timbrality; the DX7 IIFD, which was identical to the DX7 IID except that it also had a floppy disk drive; and the DX7S, which had improved sound quality and the updated case, but otherwise had the same essential functionality of the original DX7 and in that sense, was its true successor. Third-party products for the DX7 also flourished in the 1980s, including Grey Matter Response's E! expansion board, which added sequencer functions to the DX7II keyboard, and increased patch memory and a vastly improved MIDI implementation in the original DX7. DX7 IIs could transmit and receive on any one of 16 MIDI channels at a time. The DX7 family remains popular to this day with many recording and performing artists.

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