During the late ’60s, Tom Oberheim earned notoriety among Los Angeles musicians for the ring modulators he built for everyone from the experimental electronic psychedelia band the United States of America to film composer Leonard Rosenman, who used Oberheim’s ring modulator on the soundtrack for 1970’s Beyond the Planet of the Apes.
By 1969, Gibson’s Maestro division contracted Oberheim Electronics to build his ring modulator for them, which was marketed as the Maestro RM-1A.
