Daredevil Premium OverdriveLarge, natural, and open sounding overdrive Transistor driven circuit dials in any style of gain from low to high True bypass, no buffers Hand wired, Transistor based Overdrive. Inspired by the classic Colorsound power boosts of the early 70's, this one carries a bright control tone stack, more gain, and increased low end making it sweet for bass as well. Post knob controls the volume, Pre controls the gain, Bright control adds more bite as you turn