above photo from the collection of Joseph Rivers, Audio Playground, Orlando, FL
other synths in the Audio Playground Collection
The PG-200 is a programmer for the JX-3P and the MKS-30. Since those instruments were some of the first from Roland to come out with digital parameter access for editing, as opposed to sliders and knobs, Roland made the PG-200 available. The PG-200 also works with Roland's GR-700 Guitar Synth.