Joyo JF-311 Blue Rain Electric Guitar Single Effect Output volume control Hi Frequency EQ control Gain control Low Frequency EQ control True Bypass Input Impedance:1M Output Impedance:10K Running Current 10mA Power: DC 9V adapter (negative polarity) Dimensions 73(L) * 43(W)* 50(H)mm Weight: 200g Plug in 9v DC Adapter (not included) JF-311 Blue Rain ( Overdrive), NEW mini Guitar effects pedals from JOYO.