GretschGretsch is an American company that manufactures guitars, basses and drums. The company was founded in 1883 in Brooklyn, New York.
"Gretsch Filter'Tron Electric Guitar Pickups Filter Out Hum, Neon Noises, Crackle and Electrical Disturbance!" The Filter'Tron "Electronic Guitar Head" was introduced in 1957 at the summer NAMM show in Chicago. Filter'Tron pickups feature dual-coils and are designed to Filter out the electronic hum normally associated with single-coil pickups, while adding a warmer tone, and a significant increase in output and sustain.