Description SOOMME Equalizer Pedal inclueds the frequency bands: 100Hz, 250Hz, 630Hz, 1.6 KHz, and 4 KHz. 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. Specifications 1.Input: 1/4″Monaural Jack (Impedance: 470K Ohms). 2.Output: 1/4″Monaural Jack (Impedance: 1K Ohms). 3.Power Supply: DC 9V (Plug polarity is Positive on the barrel and negative in the center) 4.Working Current: 8mA. 5.Dimensions: 3.7"(D)*1.8"(W)*2.1"(H) 6.Weight: 8.6oz(With box) Package included 1 x SOOMME EQ Pedal 1 x User Manual