Bogner Amplification recently celebrated its twentieth year in business. The company's name is etched on the amps of some of the biggest rock bands in the world, including the Red Hot Chili Peppers, Aerosmith and the Black Crowes, and some of the loudest groups, such as Megadeth, Anthrax and Korn. The amps are made from scratch by owner Reinhold Bogner. In addition to amps, Bogner makes speaker cabinets and other accessories.