Ernie Ball VP Jr. - Volume Buffer/Boost
Improve your Ernie Ball Volume Pedal by adding a buffer as well as an additional volume control knob. The buffer helps to minimize tone loss on these notoriously tone-sucking pedals -- a solution to a huge problem. The additional knob acts as an optional boost. With the knob rolled all the way down, the volume pedal acts just as it normally would, but as the knob is turned up, the top output of the volume pedal is increased.
-Ernie Ball VP Jr.