"This is a combined Pedal offering you our take on the very best versions of the Sixties silicon Fuzz (Think Smiley) and Rangemaster style silicon treble booster in one pedal. Sonically we have made this pedal identical to vintage units however the Veteran (Si) is quieter and much more flexible than the original units. There are two independent foot-switches to control each side. The fuzz is first and it runs into the Treble booster. There are six knobs split between two effects. The Fuzz side has controls for Fuzz, Volume, Smooth and Bias. Smooth controls the input impedance to the circuit and gives you a less bass heavy, smoother fuzz. Bias controls the overall "heat"available to the circuit, increasing output volume on tap and the amount of mids in the circuit. The Boost side has controls for Boost, and Range, allowing you to choose what frequencies to boost, from Bass heavy through mids focussed to treble. Combining the two effects gives you absolute tonal armageddon, but still provides a musical and tweakable effect. To ensure that the pedal is useful to use on your pedalboard the width has increased to approx 105mm to allow for the two footswitches."