BGW Systems, Inc. is a designer and manufacturer of audio power amplifiers based in Southern California in the United States.

Founded by Brian Gary Wachner in 1971 in his garage while he was employed as a field applications engineer for National Semiconductor, BGW scored its first major success in 1974 when Universal Studios selected BGW to supply thousands of Model 750 and 750A amplifiers for its Sensurround cinema subwoofer sound effects systems.

Following the positive industry exposure from Sensurround, BGW amps began to be installed permanently in many movie theaters as well as at theme parks and nightclubs.

By 1983, BGW's skill in sheet metal work (acquired in fabricating their substantial amplifier housings) had grown to the point of it becoming its own source of company revenue.

This model line, designed for the road and known for its rugged durability and conservative power rating, was adopted by many concert sound companies, some of whom became BGW dealers.

The subwoofer contained four 15" drivers, crossover circuitry, and an internal amplifier based on the Grand Touring series design.