Casio Digital Guitar DG-20

Published: December 22, 2021
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A guitar synthesizer/controller like the DG-20 is any one of a number of musical instrument systems that allow a guitarist to access synthesizer capabilities. The Casio DG-20 was released in 1987. It came with 6 strings on a  rubber fretboard with 22 frets. On each note lies a sensor that sends a MIDI signal. It contains 20 preset tones, 10 rhythms and a non-editable "Sustain / Reverb" effect in the Casiotone style. The connector consists of a line output and a headphone jack as well as a MIDI Out port.

vintage casio dg 20 guitar

When a string is played, the selected tone is triggered, and is output through the built-in speaker. There are two different basic types of preset sounds built-in to the DG-20. Sounds which decay, suck as the accoustic guitar tone, and sounds which are sustained, like the jazz organ tone. Sustained sounds may be cut off by using the mute key, or by releasing the fretbord (which turns off the built-in sensor switch).


By connecting the DG-20 to another MIDI instrument, 6-note polyphonic note messages can be sent to the other instrument. Through this the DG-20 can be used to 'control' or play the other instrument, for a example a synthesizer keyboard with MIDI capabilities.

Preset tones

  • Acoustic guitar 1-4
  • Electric guitar 1 and 2
  • Flanger
  • Glocken
  • Harp
  • Shamisen
  • Jazz organ
  • Trumpet
  • Chorus
  • Distortion
  • Crystal
  • Funky clavi
  • Mandolin
  • Organ
  • Flute
  • Clarinet

See for more features and functions the instructions manual, or watch these Casio DG-20 guitar demos and reviews on YouTube.

DG-20 documents

Instructions & manuals

Looking for the instructions?
Download here the DG-20 manual (PDF).

Repair service manual

Need a copy of the service manual or schematics?
Download the DG-20 service manual (PDF).

Browse other Casio synthesizers


Casio Digital Guitar DG-20 value and price guide

What's your Casio Digital Guitar DG-20 worth in 2022? Here are some recently sold items with prices.

Item Title Date Price
Casio CASIO DG 20 Digital Guitar CASIO DG 20 Digital Guitar MIDI 12/2021 $700
Casio CASIO DG 20 Digital Electric CASIO DG 20 Digital Electric Guitar MIDI 11/2021 $345
Casio CASIO DG 20 Digital Guitar CASIO DG 20 Digital Guitar MIDI Synth 11/2021 $570
Casio Casio dg 20 Guitar Synthesizer Casio Dg 20 Guitar Synthesizer Dweller 10/2021 $552
Casio CASIO DG 20 Digital Guitar CASIO DG 20 Digital Guitar MIDI Synth 11/2021 $520
no pictureSee all sold items on eBay for more prices01/2022-.--

DG-20 forum

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