Vics Upgraded Piezo Contact Transducer Pickup For Guitar Violin Banjo Mandolin Ukulele Mini Piezo Contact Transducer Pickup 1/4" output jack with 10 inch cable Just plug it into your amp, bass amp or other recording equipment You can amplify your guitar, mandolin, banjo, violin, ukulele, viola, cello Sound is very real and clean. Installation is simple and convenient.