The Roland GI-20 is not technically a guitar synthesizer, but rather a guitar-to-MIDI converter with no tone generation capabilities of its own. It is the successor to the GI-10 and uses a 13-pin cable to interface with a guitar pickup, such as the GK-3A, GK-3B, GK-2A, or GK-2B.
It has a transpose function and can shift notes anywhere from +2 to -3 octaves.
Year Released: 2002
User Patches: 50
Screen: 2 character 7-segment LED display
Power Consumption: 450 mA at 9V
Weight: 1.3 kg
Dimensions: 218 mm x 237 mm x 44 mm
Roland GI 20 2010 SIlver ($375)