AROMA AGF-3 G-FUZZ Vintage Germanium Fuzz Guitar Effect Pedal Mini Analogue with True Bypass Effect: Fuzz;Full metal shell, durable and exquisite. 2 controlling knobs are accurate and high sensitive. Volume knob: Adjust the volume of fuzz sound. Fuzz knob: Adjust the gain of fuzz sound. Output jack: 1/4" mono audio jack for signal output. Input jack: 1/4" mono audio jack for connecting guitar. True bypass footswitch and lever designed to prevent stamping on operation knobs.