JOYO EQ-MP3 3-Band EQ Equalizer System Acoustic Guitar Preamp EQ Equalizer Piezo Pickup LCD Tuner Amplifier

Features:
3-band preamp EQ equalizer, features accurate tuning, backlight LCD display, battery indicator light.
Rotate to adjust frequency(bass, middle, treble) and volume level, very convenient.
Connect with external speaker and audio inputs, press to control playing music from memory card or USB disk.
Lightweight, compact 3-band equalizer, well fitted into the acoustic guitar, allows easy tweaking controls, for better performance.
Package include: 1 x EQ equalizer, 1 x piezo pickup rod, 1 x battery box, 1 x battery, 10 x mounting screws, 1 x plastic base, 1 x cable tie.