Bogner Amps are hand built in Los Angeles, California. Bogner was founded by Reinhold Bogner and Jorg Dorschner. Reinhold Bogner learned his amp building skills from his father, Gerhard Bogner who was a designer for Telefunken. Jorg Dorschner gained his electronic build knowledege from his too. Jorg's father was an employee with Blaupunkt Telefunken and IBM.