Casio DG-1 Digital Synthesizer Guitar Early 1980sCasio DG 20 Digital Synthesizer Guitar Without a doubt one of the most 80s thing to ever come out of the 80s, the DG 1 was the first in the line of Casio "Digital Guitars"; a revolution in design, sound and playability whilst severely lacking in practicality. These early ones have a little less functionality with a little more retro styling, and lacking MIDI functionality, however it still features loads of built in sounds and rhythms for those