The Ernie Ball 6180 Volume Pedal Junior features a potentiometer that has a 250k ohm resistance suitable for the audio path of passive instruments.
Behind the jack area under the footplate is a micro taper switch which provides the user two distinct volume swell rates. The main pivot shaft is of centerless ground 1/2 inch diameter stainless steel, precision seated though nylon bushings at both ends. Tough long lasting Kevlar cable transmits pedal travel to the controls and is attached by stainless steel springs.