PB100

Preamplifier / Volume Booster

Boost the volume and shape the sound of any instrument

Switch to turbo-mode when playing solos

Boost up piezo pickups to match regular amplifier inputs

Dedicated Gain, Bass and Treble controls for awesome sound shaping

Status LED for effect on/off and battery check

Runs on 9 V battery or the Behringer PSU-SB DC power supply (not included)

First-class electronic On/Off switch for noise-free operation

https://www.behringer.com/product.html?modelCode=P0429