Description 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 the equalizer 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-up system, 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. - Low battery automatic LED indicator, reminds you of the low battery 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 60HzPackage List1 x Equalizer