The Stage 3 is a good clean boost that I have always had on my pedal board. If you want a similar circuit with the features of both clean and dirty then try a XX Double shot for a switchable version. Our SHO type circuit has a volume control. Also while the Stage 3 hits Unity at around 1:00 this can also be changed by a simple resistor to ground making Unity at the beginning of the rotation. Either way it all works the same.