Korg Z3 Guitar Synthesizer Midi FM Synth Module

RARE Korg Z3 Guitar Synth... I used this as a synth module, which is very similar to the T81z FM synth. You can convert it to a module by holding the "function" key and pressing "synth off"... It then works as a regular midi module, generating that classic 80's FM synth sound. It's in good condition, other that the cover for the function button is missing, but the button still works fine. I never tested the guitar synth function because I don't have the plug for it.