Be sure to add me to your favorites list Casio DG-20 Midi Digital Guitar Synthesizer Original Owner's Manual Book This is an original owner's / operation manual for the mid 1980's CASIO DG-20 midi digital guitar synthesizer. This one is an original Casio owner's manual for the DG20 guitar synthesizer, in very good condition. Topics include features and functions including an overall view, panel controls and connections, power supply and use of batteries and house and car power adapters, changing the strings of the DG-20, digital performance including the use of Midi, specifications, and troubleshooting. This is an original Casio booklet and has both English and Spanish sections. A very helpful owner's guide for the Casio DG-20 player! Thanks for looking! Check out my Store!