MAD PROFESSOR ROYAL BLUE OVERDRIVE
VOLUME: sets the overall output level of the pedal.
DISTORTION: controls distortion, for most dynamic response set where the amount of distortion is controllable with picking force.
TREBLE: a boost/cut “shelving” type equalizer that controls the amount of high end, operating where the Presence control is on most amplifiers. Treble can be used to add shimmer to even bright amplifiers without interfering with typical treble boost of most amplifiers.
BASS: a boost/cut shelving type equalizer that controls the low end, just above resonance of a standard 4×12 cabinet. With both Bass and Treble turned up, you can get a scooped heavy tone, turn the knobs down for soft mid-boost tone.