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| DX21 | |
|---|---|
 A Yamaha DX21 synthesizer shown along with various 90s and 2000s-era groove machines. | |
| Manufacturer | Yamaha |
| Dates | 1985[1] |
| Technical specifications | |
| Polyphony | 8-voice |
| Timbrality | Bi-timbral |
| Oscillator | 4-Operator |
| Synthesis type | FM |
| Filter | None |
| Aftertouch expression | Yes, via MIDI only |
| Velocity expression | Yes, via MIDI only |
| Storage memory | 128 patches, 16 performances |
| Effects | Chorus |
| Input/output | |
| Keyboard | 61 key |
| Left-hand control | Modulation, pitch bend |
| External control | MIDI (In, Out, Thru) |
The Yamaha DX21 is a digital controlled bi-timbral programmable digital FM synthesizer with a four operator synth voice generator which was released in 1985. It uses sine wave-based frequency modulation (FM) synthesis.[2] It has two FM tone generators and a 32-voice random-access memory (RAM), 32 user voices and 128 read-only memory (ROM) factory preset sounds. As a programmable synth, it enables users to create their own unique synthesized tones and sound effects by using the algorithms and oscillators. The instrument weighs 8 kg (17.6 lbs). On its release, it sold for $795.
- ^ "Yamaha DX21". Vintage Synth. Retrieved 15 June 2018.
- ^ "Yamaha Digital Programmable Algorithm Synthesizer" (PDF). www.synthfool.com. Synthfool. Retrieved 24 March 2018.
Note: User manual pdf