The Shadow Prestige Active Sound Hole Humbucker is designed to give a truly authentic acoustic guitar sound. Unlike most other magnetic pickups that give an electric guitar sound, the SH 145 Prestige gives a crisp natural acoustic sound. The guitar pickup is built as a stacked humbucker using powerful samarium cobalt magnets. Adjustable pole pieces are trimmed to provide a perfect string balance for the acoustic guitar strings. A complete shielded case and low impedance output protect it from outside magnetic disturbances and makes it totally hum-free. Electronic circuitry is powered by a single 3V cell battery with extremely low power consumption. Volume control and easy installation make this award-winning pickup one of the most user-friendly pickups on the market. An end pin connection cable for permanent installation and a detachable quick mount 12" (4m) cable are included.