The Japanese Pearl Drum company bought the Hayashi acoustic guitar company in the early 1970s, and began selling Pearl branded acoustic guitars made by Hayashi. There were also Pearl Export Series solid body electric guitars and basses made by Matsumoku from the mid-1970s to mid-1980s. The Pearl Musical Instrument company also sold a range of effects pedals and solid state amplifiers in the 1980s.

Source:  Jack Westheimer Pioneer of Global Guitarmaking. By Michael Wright. Vintage Guitar Magazine

Source: Pearl Guitars...brought to you by Matsumoku and Hayashi

Source: 1983 Pearl Effects catalog