Hammond Manufacturing offers a full range of transformers, chokes and enclosures.
Hartley Peavey founded Peavey Electronics, one of the world's largest manufacturers and suppliers of musical and professional audio equipment, in 1965, having built his first amplifier in 1957.
The Leslie speaker system is a combined amplifier and loudspeaker which rotates a large chamber in front of the speaker to produce a unique audio effect commonly associated with Hammond organs.
Gretsch is an American company that manufactures guitars, basses and drums. The company was founded in 1883 in Brooklyn, New York.