The original company was founded by Mitsou Matsuki, an apprentice cabinet maker in the early 1930s. Matsuki, who studied electronics in night classes, was influenced by listening to Hawaiian music. A friend and renowned guitar player, Atsuo Kaneko, requested that Matsuki build a Hawaiian electric guitar. The two entered into business as a company called Matsuki Seisakujo, and produced guitars under the Guya trademark.
In 1948, a little after World War II, Matsuki founded his new company, Matsuki Denki Onkyo Kenkyujo. This company produced electric Hawaiian guitars, amplifiers, and record player cartridges. In 1951, this company began using the Guyatone trademark for its guitars. By the next year the corporate name evolved into Tokyo Sound Company. They produced their first solid body electric in the late 1950s. Original designs dominated the early production, albeit entry level quality. Later quality improved, but at the sacrifice of originality as Guyatone began building medium quality designs based on Fender influences. Some Guyatone guitars also were imported under such brandnames as Star or Antoria. Many amplifiers produced in the 1960s resemble Fender Blackface or Silverface designs. The Guyatone trademark is currently used on a line of effects pedals. Source: Michael Wright, Guitar Stories, Volume One.
Amplifiers previously produced in Japan from the late 1940s through the early 1970s. The Guyatone trademark was established circa 1933, and they currently produce a full line of effects pedals.