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"The Casio DG-20 is a classic 80's guitar synth and MIDI controller. It has built in PCM sounds, a rhythm drum machine and playable drum pads. You can use it as a standalone electronic guitar and/or as a MIDI controller to control and play other MIDI devices such as synthesizers, synth/sound modules, tone generators etc.
It has adjustable tempo, transpose and tuning with separate guitar and rhythm volume controls.

It also has a built in speaker plus a headphone socket and an audio output jack for connecting to an amp or external speaker.
About This DG-20
This DG-20 has been refinished on the front side in a cute and fresh bright yellow and has had a new DG-20 decal applied. It looks very cool and unique as the DG guitars are usually only ever seen in dark gray."