Hamer Guitars is generally considered the first "boutique" electric guitar brand that specifically catered to professional musicians, and was one of the first guitar manufacturers to produce a 12 string bass guitar.
The company was incorporated in Illinois in 1976 by Montgomery, Dantzig, James Walker and Hamer.
During this period Hamer's customers were limited to big-name touring groups such as Kiss, Bad Company, Wishbone Ash, Jethro Tull and Savoy Brown.
In the late 1970s to the mid-1980s Def Leppard used Hamer guitars and basses.
This first instrument served as the basis for a new company called Hamer Guitars.