Yamaha DX21

$516.48 Price Tier: Budget

4.0 (21)

3 Reviews

Find out who is using Yamaha DX21

2 community setups

5 wishlisted

58 saved

Page last updated Jun 20, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated June 20, 2026.

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3.0 (5)

$516.48 1 available New

$53.83 14 available Used

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Average Price: $285

Budget/Beginner

$500

$1501+

Price Tier

In the Synthesizers category, Yamaha DX21 is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

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Description

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The Yamaha DX21 is a classic synthesizer that has captivated musicians with its unique sound and versatile capabilities. This affordable FM synthesizer is part of Yamaha's renowned DX series, known for its rich, digital soundscapes that defined much of the 80s music scene. With a dual 4-operator FM architecture, the DX21 offers an expansive range of tones, from punchy basses to shimmering pads, making it a staple in both live performances and studio settings.

Featuring 32 keys, its compact design doesn't compromise on depth or expressiveness. The DX21 includes a range of preset voices, providing a solid foundation for any musical project. Additionally, its user-friendly interface allows for ease of programming, making it an excellent choice for both beginners and seasoned synth enthusiasts.

The DX21's onboard stereo chorus adds warmth and dimension to your sound, enhancing your music with that classic Yamaha depth. Its MIDI capabilities also provide seamless integration with modern digital audio workstations (DAWs), ensuring you can bring its vintage charm to any contemporary setup.

Key Features:

Affordable FM synthesizer part of Yamaha's iconic DX series
Dual 4-operator FM architecture for expansive sound creation
32 expressive keys for a range of playing styles
Onboard stereo chorus for added depth
User-friendly interface ideal for both beginners and pros
MIDI capabilities for seamless DAW integration
Classic preset voices ideal for various music genres

Product specs

Brand	Yamaha
Model	DX21 Programmable Algorithm Synthesizer
Finish	Black
Year	1985
Categories	Digital Synthesizers, Keyboard Synths
Analog / Digital	Digital
Key Size	Full Size
Keyboard Action	Synth Action
MIDI I/O	MIDI Input, MIDI Output, MIDI Through
Number of Keys	61 Keys
Polyphony	8 Voices

FAQs

Is the Yamaha DX21 suitable for live performances?: Yes, the Yamaha DX21 is suitable for live performances due to its 61 full-size keys and MIDI capabilities, allowing it to integrate with other equipment on stage.
What type of synthesis does the Yamaha DX21 use?: The Yamaha DX21 uses digital FM (Frequency Modulation) synthesis, providing a range of distinctive, complex sounds that are characteristic of FM synthesis.
How does the Yamaha DX21 differ from the DX7?: The Yamaha DX21 features 4 operators and 8 algorithms for sound design, compared to the DX7's 6 operators and 32 algorithms. The DX21 offers 8-voice polyphony, while the DX7 provides 16-voice polyphony.
Does the Yamaha DX21 have MIDI connectivity?: Yes, the Yamaha DX21 includes MIDI Input, Output, and Through, allowing it to connect with other MIDI-compatible devices for expanded functionality.
What is the polyphony of the Yamaha DX21?: The Yamaha DX21 has 8-voice polyphony, allowing it to play up to eight notes simultaneously, which is suitable for most performance and composition needs.

Videos

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zlovitch

Yamaha DX21 Basics - Intro & Special Features

zlovitch

Yamaha DX21 - Factory Presets Demo (+ song at the end)

Xavier Radix

Yamaha DX21 Vintage Synthesizer

Form the Wave

Yamaha DX21 Basics - Operators

zlovitch

Yamaha Dx21 Demo 2018 I No Talking + Custom Patches

Alphacode Synth Demos & Custom Sound Banks

Yamaha DX21 "FM Depths" Soundset 32 Presets

LFOstore

Yamaha DX 21 - ALL the 128 sounds in 38 Minutes !

Howard J Foster

YAMAHA DX21

ORGAFORUM

Yamaha DX-21: How badly has it aged? feat. BC2 breath controller

Gearfacts

Reviews

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PROS

Affordable entry into FM synthesis
Durable build with a built-in power supply and long cord
Mix/balance two sounds with a dedicated slider
"Lately bass" preset offers iconic sound
61 full-size keys with 8-voice polyphony enable complex playing
Offers unique sound possibilities, especially when used with external effects
Still impresses with its patch diversity even after years of use
Considered a "secret weapon" for creating unique sounds

CONS

Lacks velocity and aftertouch, leading to even volume but less expression
Only 4 operators limit sound creation compared to more advanced models
Built-in sounds and presets may feel outdated or uninspiring
Programming can be challenging for beginners in FM synthesis
Non-velocity sensitive keys limit dynamic playability
The digital chip introduces some noise, which may not be appreciated by all

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Yamaha DX21.

Features and functionality

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The DX21 lacks velocity sensitivity on the keyboard, but it does support velocity via MIDI, allowing for more expressive play with an external controller.
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The DX21 includes stacking and splitting patches, a feature not available on the original DX7, enabling more complex sound design.
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The ability to split or layer sounds on the DX21 provides a unique feature not found on the DX7, useful for complex sound arrangements.
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The DX21 features an onboard analog stereo chorus effect, notable for warming up the synth's typically cold FM sound.
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Use cases and applications

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The DX21 has classic sounds like "Solid Bass," popular in 90s dance music, and offers unique LFO speeds in sample and hold mode for industrial sounds.
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Owners mention using an external velocity-sensitive controller to enhance expressiveness on the DX21.
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The portamento function and dual mode detuning offer unique sound capabilities, enhancing creative expression in FM synthesis.
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Software and compatibility

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Martin Tarenskeen's patch banks and utilities are recommended for enhancing the DX21's sound palette, offering a range of additional presets.
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Edisyn is recommended as a free, effective 4-operator FM synth editor, offering tools like hill-climber and constrictor for patch exploration.
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User experience

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The DX21 is described as "built like a tank," suggesting robust build quality favorable for gigging musicians or those seeking durability.
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The DX21 is considered a semi-professional instrument from its era, making it less prestigious than the DX7.
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Owners describe the DX21 as challenging to program yet rewarding, with a sound palette that includes harsh and lovely tones.
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The DX21's sound is described as reminiscent of early Sega console tones due to its YM2151 chip, appealing to retro gaming music enthusiasts.
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Value and pricing

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The DX21 is often found at affordable prices, with some owners reporting sales as low as $50, making it an attractive option for budget-conscious buyers.
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Comparisons

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The DX21 is a 4-operator FM synth compared to the DX7's 6-operator, impacting sound complexity and quality.
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DX21 offers 8-note polyphony, which is reduced to 4 notes per layer when sounds are layered.
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4.0 out of 5

Based on 3 Reviews and 21 Ratings

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freefoolish

123

over 2 years ago

Great vintage synth

I love this synth! I think it is interesting with the sounds you get and the programming is interesting giving you interesting results. Great giging size. 4 op dX7 for a lot cheaper.

The downside would be the non velocity sensitive keys. The digital chip they used is a little noisy, but is that a downside or just character?

Roles:

Singer Keyboardist Composer

Genres:

Electronic Rock Alternative rock