This is a customized 3-band EQ tuner preamp for Yamaha guitars with tail pin piezo pickups. Professional tuners designed for guitars. Suitable for folk and classical guitars. Equipped with volume, treble, alto, bass and tuning control knobs. Requires 6F22 9V battery power (not included). Model: 3-band equalizer preamp with tuner. Color: Black. Weight: 220 grams. Package Contents:
1 x Guitar Equalizer Preamp 1 x Battery box (for replacement, some modification of the old battery box hole may be required) 1 x guitar piezo pickup