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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
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