JOYO JF-16 British Sound Marshall Inspired Tone Speaker Simulation Electric Guitar Pedal/Effect pedalJOYO JF-16Poduct Introduction 1.MID-- Adjust the middle frequence2.LOW-- Adjust the low frequence3.LEVEL-- Adjust the output level4.OUT-- The output port is connected with the sound box5.LED-- The indicating lamp lit when in enabling effect6.HIGH-- Adjust the high frequence7.DC 9V-- When using an extemal power supply is cut off automatically when the battery power supply8.DRIVE-- Gain adjustment9.VOICE-- Adjust the frequence resoponse and the distortion，together with the adjustment of DRIVE it can simulate many kinds of amplifier10.IN-- The electric guitar is inserted into the mouth11.TRUE BYPASS-- Foot switch ManualWarning1.Do not disassemble or repair this unit by yourself.2.Do not use or store this unit in the following circumstances:high temperature，high humidity，dirty or strong shock places.3.Do not drop off this unit or bump this unit off hard surface.4.Do not use cleaning liquid or alcohol to clean this unit in case of damage.5.Remove batteries if not using the unit for a long period of time.6.Please dispose the used battery properly. Battery replacement1.Press the front of the battery cover and then slide back to remove the civer.Take out the flat batteries.2.Put the battery into the battery compartment by placing the negative(-)pole of battery facing inside.Insert the front of cover and then press down and push to close. SpecificationsInput Impedance:1MΩOutput Impedance:1kΩRunning Current:3.8maPower:6F22 9V Battery/DC 9V adapterDimension:120(L)*97(W)*55(H)mmWeight:390g