Ernie Ball MVP Most Valuable Pedal Volume/Boost PedalThe Ernie Ball MVP takes a Standard Volume Pedal and Kicks it into Overdrive. You can use it as a standard Volume pedal, going from 0% to 100% of signal, or you can use it as a Boost pedal to Bump Up your Leads without messing with Volume Knobs Mid Solo. The Heel Down (off) Position can be set at the standard 0% of Signal, fully off, or Turn the Min. knob all the way up and you'll get 50% signal for Rhythm Playing. With the Gain turned all the way