JOYO R03 heavy metal guitar effect pedal High Gain Distortion effect pedal

Uzi Distortion Specially designed for heavy metal, its characterized by High Gain. With a BIAS knob, you can switch easily between American Distortion and British Distortion. Meanwhile, UZI has a GAIN Control Knob and a VOLUME Control Knob, both are of dynamic balance, adjust the GAIN knob while dont adjust the VOL knob, the signal from the circuit will adjust automatically, ensuring the Volume is the same as before.