[5-Band Graphic EQ ]Each band provides a range of ±18dB to help you find your favorite tone. Includes the frequency bands: 100Hz, 250Hz, 630Hz, 1.6kHz and 4kHz ±18dB the adjustable range is wide. [Easy Carry]Excellent tone EQ Pedal electric guitar effect pedal with true bypass provide transparent tone,minimize the tone loss to keep the best tone quality. [Solid Quality]Whole aluminium-alloy housing classic stoving varnish finish,stable and strong,beautiful and practical, easy to carry. [True bypass]Volume knob for flexible volume adjustment,suitable for any occasion. [Note ]The power adapter of the EQ effect pedal is 9V500mA DC output is routside of the negative (not included), No matter what you want, like connecting to a full range pedals or just finely adjusting you tone . You can receive a master volume control of individual frequencies with complete precision from the Rowin Equalizer pedal. It is specifically designed for the guitar players, and this five-band graphic EQ features a ±18 dB adjustable gain range per band, which help the players to shape their sound over five specific frequencies in order to preventing feedback caused by additional distorting effects. 1.Input: 1/4inch Monaural Jack (Impedance: 470K Ohms). 2.Output: 1/4inch Monaural Jack (Impedance: 1K Ohms). 3.Power Supply: DC 9V 4.Working Current: 8mA. Colour:Silver Material:Aluminum Alloy Package Contents: 1 x Guitar Effect Pedal