From the website:

Compact and optimized for passive instruments! The Ernie Ball VP JR. Passive Volume Pedal has a durable, compact design that allows more floor space. It features a potentiometer with 250kOhm resistance suitable for the audio path of passive instruments. A micro taper switch gives you 2 distinct swell rates. A tuner output provides silent tuning in the heel-down pedal position.

The potentiometer 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. Overall Volume Pedal Junior dimensions: 3.5" W x 10" L x2 3/8" H . The main pivot shaft is of centerless ground 1/2' 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. Features: Compact design, Potentiometer is optimized for passive instruments, Micro taper switch provides 2 distinct swell rates, Tuner output.

My Story: My husband was an accomplished musician and an amazing guitarist for over 40 years. He passed away suddenly last July. He has so much equipment that shouldn't be sitting here collecting dust. Someone else should enjoy them. Thank you in advance for your patience with this non-musician.