How is the filter knob on the RAT distortion pedal different from the tone control on a guitar?
The RAT pedal’s filter control is a variable low-pass filter that allows a selective high-frequency cut after the signal has been amplified, equalized and limited by the distortion circuitry, thus allowing the control over the higher-order harmonics that is an absolute necessity in order to obtain a smooth, “fat” lead guitar tone. Your guitar’s tone controls, which cut the high frequencies before they are processed by the RAT pedal, will also reduce the “bite” and attack of your instrument, resulting in a sound that is muddy and lifeless. Our filter circuitry helps preserve the “presence” of your sound while eliminating that tinny “fuzztone buzz” that other distortion pedals produce.