Cherub GT-4 G-Tone 3-Band EQ Equalizer Acoustic Guitar Preamp Piezo Pickup LED Tuner

Features:
3-band equalizer, rotate the knobs (LOW/ MIDDLE/ HIGH) to adjust frequency. Wide frequency response range from 20Hz to 20kHz.
With phase and tuner function. With feedback (NOTCH), middle frequency (250Hz-10kHz), and volume (VOL) control.
Built-in high precision twelve-tone temperament tuner, with clear LED display for easy reading.
Compact and lightweight, comes with 8 screws, easy to mount into the acoustic guitar.
Powered by a 9V alkaline battery (not included). Low battery prompt: replace battery when BATT indicator lights up.
Note: Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding.