This is a great vintage 1970 poster that was produced by the Acoustic amplifier company. It was one in a series of posters by users of their products. It measures 15.5x21 inches and has never been hung in excellent condition.        Acoustic Control Corporation was a manufacturer of instrument amplifiers, founded by Steve Marks (with the help of his father) and based in Van Nuys, California. Its original location was a shack onSunset Boulevard in Los Angeles, California.

Most of the amplifiers produced by ACC were solid-state, but a few models later in production were valve amps. The company is remembered in particular for its Acoustic 361 bass stack, consisting of an Acoustic 360 bass pre-amplifier and one or two Acoustic 361 W-bins, each featuring a built-in 200-watt RMS power amplifier and a rear-facing 18" Cerwin-Vega loudspeaker. Acoustic also produced the "Black Widow" electric guitar and electric bass 1972 - 1975. The guitars and basses were based on designs used by Paul Barth for his Bartell guitars and basses. The majority of the guitars were built in Japan although Semi Moseley (of Mosrite fame) claims of building the last 200 guitars made. One prolific user associated with this guitar was jazz guitarist Larry Coryell who had an endorsement deal. Jimmy Nolen of James Brown's band was also a "Black Widow" user.

Robby Krieger, guitarist of The Doors was the most high-profile early user of the Acoustic 260 head and 261 cabinet—the first models ever produced by ACC. Krieger's Acoustic amps were a major public-relations boost for the fledgling company. Albert King and Chuck Berry also used the 260 and 261. 

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