Yibuy 55mm Black Plastic and Metal Microphone Equalizer Piezoelectric Pickup for Acoustic Guitar Tuning, Classical Folk Music, with Adjustable Button

Self-adhesive tone hole adjustment for the body, tone hole type adjustment pickup, does not destroy the volume microphone adjustment, Switch phase, microphone size adjustment, power lamp display switch, Ultra-thin silver pickup bar, simple and easy to use, convenient to install, deep processing without using a lute groove during installation. Equalizer piezoelectric pickup is suitable for classical guitar and folk guitar. Improves the coupling between the transducer and guitar, does not affect the tone.