Joyo JF-307 Clean Glass Electric Guitar Single Effect Controls: Tone Control Drive / Gain Mid boost Control Output Specifications: True Bypass Input Impedance:1M Output Impedance:10K Running Current 25mA Power: DC 9V adapter (negative polarity) Dimensions 73(L) * 43(W)* 50(H)mm Plug in 9v DC Adapter (not included) JF-307 Clean Glass, NEW mini Guitar effects pedals from JOYO.