In short - The absolute perfect booster pedal for the front end of your vintage mid-gain amps such as Plexi Marshall, Orange, Hiwatt or Vox.
The "Ball Buster" was conceived to be used to drive the front end of your old "one trick pony" amp and give you a whole new array of amazing and usable guitar tones.
GAIN KNOB - When the pedal is first engaged you'll notice an instant 10db (approx.) of clean pure boost ... as the knob is turned clockwise the pedal starts to explode with gain and natural compression... When fully clockwise you'll find yourself in Fuzz territory.