Barcus Berry 1457XL Acoustic Guitar Pickup"Outsider" Piezo Transducer with 2-Feet Cable The highest output guitar pickup in the Barcus Berry line. Perfect for recording, broadcast or live performances where its high level output and feedback rejection are most needed. Mounts on top of the guitar adjacent to the bridge. For use with virtually any flat top or arch top guitar. Installation requires no tools nor alterations to the instrument. Ideal for guitar, ukulele, drum, steel drum, balalaika, berimbau, guitarron, kalimba, koto, lute, sitar, zither, tap floor or wooden instrument.