⭕ This is an Oberheim Matrix-12 analog synthesizer. It is 100% working and in excellent cosmetic shape. The synth was completely serviced and calibrated and has been in my home studio ever since. This particular M12 is very special because it is an early unit made before the original Oberheim Electronics, Inc. company hit financial problems in 1985. As a result, this is one of the few M12 that was made when the company was still Toms. However, unlike other early M12 units, this one received the Factory Aftertouch upgrade (not all M12 have aftertouch!) AND received the original Oberheim 12-Individual Output upgrade (see photo of the side panel).