Joyo JF-315 Medalhead Distortion Electric Guitar Single Effect Mid frequency EQ control High Frequency EQ control Gain control Output volume control True Bypass Input Impedance:1M Output Impedance:10K Running Current 22mA Power: DC 9V adapter (negative polarity) Dimensions 73(L) * 43(W)* 50(H)mm Plug in 9v DC Adapter (not included) JF-315 Metal head Crank Distortion, NEW mini Guitar effects pedals from JOYO.