This little transducer is a "hot" pickup with impressive quality.This is the perfect solution if you need to amplify your musical instrument and do not want to break the bank in the process. Just mount the transducer inside your musical instrument with the supplied double stick tape and run the 1/4" to your ideal location. You can amplify your mandolin, banjo, violin, ukulele, guitar, bass, viola, cello, and just about any other instrument that has a soundboard. This unit works with a standard 1/4" plug. You can connect it to a PA, mixer, or amplifier.