Wikipedia
Multivox was an American-based synthesizer company since the mid-1970s until the 1980s. Originally it was founded in the mid-1940s as the guitar and amplifier manufacturing subsidiary of Peter Sorkin Music Company (Sorkin Music), a New York-based retailer/wholesaler. Then eventually it established separate corporate identity, and after the close of Sorkin Music in the mid-1970s, it continued in existence for fourteen years, according to the Blue Book of Guitar Values. They specialized in delivering Japanese-designed and built equipment to the American market. They were criticized as having design and circuitry extremely similar to but inferior to designs by Roland. Multivox ceased trading in the early 1980s having "faded into synth history", according to the Synthmuseum. In addition to synthesizers, the company marketed several Effects pedals. These included the Big Jam series guitar effects line.