Acoustic Guitar Soundhole Pickup. Made by Shadow.This pickup is designed to give a truly authentic acoustic guitar sound. Unlike most other magnetic pickups which give an electric guitar sound, the SH 145 Prestige gives a crisp natural acoustic sound. It 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. As it is a humbucker, it is free of 50/60Hz hum. 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 an extremely low power consumption. Volume control and easy installation make this award-winning pickup one of the user-friendliest pickups on the market. An endpin connection cable for permanent installation and a detachable quick mount 12’ (4m) cable are included. This pickup has received in the shortest time the most favorable test reviews in music magazines worldwide. Installation Manual: http://www.shadow-electronics.com/doc/pro_pdf1/en-GB/Soundhole_Manual_International.pdf