Active Soundhole Humbucker w/Volume Control. Perfectly Balanced Output, Completely Shielded, Zero Hum, Includes CR2032 battery, Includes high-quality stereo endpin 1/4'' output (SH 009) for permanent installation, Includes separate output cable 12’ (SH 007) for temporary installation. The award-winning Shadow SH 145 Prestige acoustic guitar pickup is designed to give a truly authentic, crisp, and natural acoustic guitar sound. Using powerful samarium cobalt magnets, the SH 145 is built as a stacked humbucker with trimmed adjustable pole pieces to provide perfect string balance for acoustic guitar strings. A completely shielded case and low impedance output make it 100% hum-free. Electronic circuitry is powered by a single 3V cell battery with extremely low power consumption. Volume control and easy installation make the SH 145 Prestige pickup one of the most user-friendly on the market. An end pin connection cable for permanent installation and a detachable quick mount 12' (4m) cable are included. Black finish.