Our special design overdrive circuits are meant to mimic not modeling (which in most cases is a digital processor.) Not all amp clip (distort) the same as we all know, nor do overdrives. The Vintage Overdrive is a blend of the late 60's - 70's overdrives that still work today. This unit takes the best of all those vintage pedals and uses them in our design format. Built like a tank, easy to use, 3 controls with enough extended db to drive the front end and a EQ and drive section to find that lead tone or fatten up the rhythm lines.