Watkins Electric Music (WEM) is a British company founded in 1949 by Charlie Watkins and his brother Reg. WEM started as a record shop in Tooting Market, London, later moving to a small shop in Balham where the brothers began selling guitars and accordions.

From the 1950s to the 1970s WEM manufactured guitars, amplifiers, PA systems and the famous CopiCat tape loop delay. The company still existed in 2007 and still run by Charlie Watkins, focusing on accordions and a new version of the CopiCat.

Charlie Watkins was the amp expert, while brothers Sid and Reg made the guitars in the Watkins factory in Chertsey. In 1969 they decided to separate the product lines into separate companies, the guitars were made under the Wilson brandname, Wilson being their mother's maiden name.

In the early 1960s the Unicord Corporation, a manufacturer of electronic transformers purchased the Amplifier Corporation of America of Westbury, New York. They began marketing a line of amplifiers under the brand name of Univox. The company was purchased by Gulf + Western in 1967. Guitar making operations moved to Japan in 1975 where they continued making guitars until 1982. Production under the Univox name was halted after a fire at the Matsumoku factory. After this time instruments were made in Korea under the name Westbury. The Unicord Corporation was purchased by Korg in 1985, effectively ending the line for good.

Univox was best known for making copies of instruments from better known companies such as Mosrite, Fender, Gibson, Rickenbacker, Ampeg/Dan Armstrong, Epiphone and others. These copies are often referred to as lawsuit copies among collectors. The Univox Hi-Flier was largely based on the Mosrite "Ventures" guitar; it was popularized in the early 1990s by Kurt Cobain, almost two decades after original production had stopped.

Oregon-based Sunn Musical Equipment Company was formed in 1965 to provide rock and roll musicians with loud, roadworthy amplification. Sunn amps were used by such '60s bands as Mountain, The Who and the Jimi Hendrix Experience.

Sunn was ultimately acquired by Fender , who discontinued production of the line in the early 2000's.

This is a category for all items that have not yet been assigned a proper brand name.