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Yamaha DX21

FM Synthesizer

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Yamaha DX21
100.00 street price

The Yamaha DX21 is a synthesizer released by Yamaha in 1983. It is a four-voice polyphonic synthesizer with two digital oscillators and two analog oscillators per voice. It features a variety of sound-shaping controls, including an envelope generator, a low-pass filter, and an arpeggiator. The DX21 is capable of producing a wide range of sounds, from classic analog leads and basses to digital pads and sound effects.

Country of origin / production: Japan

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Usage area
Performance Synthesizer 
Usage Design/ Form Factor
With Keys 
Archetype
Digital (D) 
Polyphony
Voices8
Multi Timbral Capacity8 part(s)
Tone Generator / Sound Synthesis
Synthesis Method Frequency Modulation (FM)
Oscillator Type DCO (Digitally Controlled Oscillator)
FM Operators16
Waveform/ Spectral form (main generator) Sine
Programs/ Voices/ Timbres
Single Voice Preset128
User-defined Single Voice32
User-defined Multitimbral32
Envelope Generator (EG)
ADSR 
Modulation
LFO: LFO Count1
Arpegiator/ Portamento
Portamento 
MIDI in/ out
IN 
OUT 
THRU 
Keys
Type Synth Action
Velocity Sensitivity 
Aftertouch 
Size5
Number of Keys61
Display
Display type TFT
Built-in controllers
Pitch Bend Wheel 
Modulation Wheel 
Programmable 
External controllers
Breath Controller 
Sustain foot pedal 
Expression foot pedal 
Audio out
Analogue: 1/4" (6.35mm)2
Analogue: 1/4" (6.35mm) headphones preamplified1
Expandability
Preset Memory Slot/ Wave Expansion Board1
Power
Voltage 220V
Voltage 240V
Voltage 120V
Voltage 50-60Hz
Power Supply Built-in, internal
Power consumption7 W
Dimensions
Height82 mm
Width909 mm
Depth270 mm
Weight8 kg
Case/ body
Metal 
Color
Black 
Production start1985
Production ended

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  • enpdf1.49Mb Yamaha DX21 Owner's Manual
  • enpdf0.19Mb Yamaha DX21 Performance Notes