Library Music Instrument

Oberheim Xpander

Oberheim's extensively programmable rack-mount synthesizer, released 1984.

Oberheim Xpander owner's manual cover, showing the unit
Owner's manual cover, showing the unit.Source

A rack-mount six-voice analog synthesizer released in 1984, the Xpander extended Oberheim’s SEM-derived voice architecture into one of the most extensively programmable modulation systems of its era, alongside its keyboard sibling the Matrix-12.