Ampeg

Ampeg is a manufacturer best known for its bass amplifiers. Originally established in 1946 in Linden, New Jersey by Everitt Hull and Stanley Michaels as "Michaels-Hull Electronic Labs," today Ampeg is part of the Yamaha Guitar Group. Although specializing in the production of bass amplifiers, Ampeg has previously manufactured guitar amplifiers and pickups and instruments including double basses, bass guitars, and electric guitars. Source: Wikipedia