Ampeg is a manufacturer of musical instruments, especially the musical instrument amplifier, established by Everett Hull and Stanley Michaels in 1946 , and now headquartered in Woodinville, Washington. Although the company specializes in the production of bass amplifiers (for bass guitars and double basses), they also manufacture guitar amplifiers. In the past, Ampeg also manufactured several instruments including pickups, double basses, bass guitars, and electric guitars.