Are looking to improve the sound of your acoustic guitar? Then you'd better don't miss this 4 band equalizer set! This multi-functional 4 band equalizer set comes with a microphone and LCD display tuner system, and is equipped with volume, bass, middle, treble which will enable you to spend less time adjusting the controls and more time playing. Feature -Size:7.00X5.00X2.60cm/2.75X1.97X1.02in - 4 bands of equalization. With volume, bass, middle, treble, enabling you to spend less time adjusting the controls. - LCD Tuner system with Mic phone, easy to read and convenient to use. - Preamp pick- , offers better sonic clarity and great tone range for your acoustic guitar. The perfect embodiment of the acoustic guitar. - Includes all the accessories required for installing a pickup to your acoustic guitar, such as piezo pickup wire, mounting screws, suction cup, etc. - automatic LED indicator, reminds you of the in time so to replace it with a new one. Specifications - Input impedance: 10 megohm - Frequency response: 20 HZ - 20 kHZ - Control range: PRESENCE:+/-12dB at 10KHz TREBLE:+/-12dB at 2.2KHz MIDDLE: +/-12dB at 650Hz BASS: +/-12dB at 60Hz Package list: 1 x Equalizer