The Preamp circuit is based on the Benson Chimera 30-watt guitar amplifier, but it substitutes FET transistors for the vacuum tubes. The result is an extremely amp-like and versatile clean boost/overdrive/fuzz pedal that imparts rich harmonics and a very musical EQ to your signal chain…truly a Chimera in a box! Power requirements:9VDC Boss style adapter or battery 50ma Controls: Gain, Volume, Treble, Bass. Tom's Take: "The Preamp is a versatile pedal that can fill a lot of roles on your pedalboard. It's every bit as responsive and as flexible as your amp's preamp, and with four simple controls, there are a lot of ways to use it. It can be a clean boost that pushes your amp, or just enough to beef up your signal. Crank the treble and cut through the mix, or crank the gain and it's a full-on overdrive."
