Acoustic Guitar Tuner, 5 Band EQ Equalizer, Precision Tuning, Easy Installation, Battery Compartment Design for Professional Musicians, Guitar Enthusiasts, Students, Stage Performa$$Music

Pickup, equalizer, tuner, 3 in 1 equipment, convenient to connect the sound to the guitar speaker amplifier output. Powered by one 9V battery and with low battery indicator (battery is not included). Built-in tuner with LED display, bass, middle.1, middle.2, treble and control knobs, fit your different needs. The pickup bar receives the vibration when playing, the equalizer receives, processes and adjusts the audio , and the output end is connected to the audio equipment to output the audio. Tuner: to obtain and determine the vibrational frequency of the sound input to the equalizer. The LED display and three lights show the accuracy and deviation of the corresponding scale and tone.