Korg Polyphonic Ensemble 2000 Vintage Analog Synthesizer full restoration. It's from the 1976 area. A preset based polyphonic orchestral instrument synthesizer. It was manufactured in Japan by the Keio Organ company (aka KORG). There are two versions and they are quite different from each other, but were intended to complement each other as a pair, with the "S" model being designed around sustained sounds such as strings, choir and organ, and the "P" model designed for percussive sounds such as acoustic and electric piano, and clavichord.
Customer brought it in with some distortion in the audio signal.