Joyo JF-302 Wild Boost Electric Guitar Single Effect True Bypass Output volume control Gain Control High frequency EQ control Low Frequency EQ control Specifications: Input Impedance:1M Output Impedance:10K Running Current 18mA Power: DC 9V adapter (negative polarity) Dimensions 73(L) * 43(W)* 50(H)mm Plug in 9v DC Adapter (not included) JF-302 Wild Boost( Drive Boost), NEW mini Guitar effects pedals from JOYO.