5 Band Guitar Equalizer has great tone and qickup range,and can be installed in the body of any standard acoustic Guitar,Come with pre-wired for easy assembly. Built in tuner and LCD display With Volume Control, Presence Control, Bass Control, Middle1 Control, Middle2 Control, Treble Control, tuner Power on/off button. Professional guitar tuner Auto and manual tuning mode. Having adhered the most demanding quality control procedures. Value for money. Acoustic Guitar Pickup 5 Band EQ Equalizer The Complete Kit offers great tone and pickup range, and is made to be installed in the body of any standard acoustic Guitar. Control Range: Bass: +/-12dB at 60Hz Middle: +/-12dB at 500Hz Treble: +/-12dB at 3KHz Presence: +/-12dB at 10KHz Power: 6F22 9V battery 5-Band EQ Volume Control Presence ControlBass ControlMiddle1 ControlMiddle2 ControlTreble Control tuner Power on/off button Colour:black Material:plastic electronics Size:9.8 x 5.8 x 4cm Package Contents: 1 x 5 Band EQ Equalizer 1 x Battery box 1 x Microphone 1 x Piezo Pickup Line 8 x Mounting screws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.