The tone selection is the default function for the knobs. It gives you the usual gain, bass, middle, treble, and master volume controls common to most guitar amplifiers.

When you __SELECT__ tone mode on the front panel, first four knobs get reassign to:

• Knob #1 : Gain : sets the input gain that sets the distortion level.
• Knob #2 : Low : sets the amount of low frequencies in the signal.
• Knob #3 : Mid : sets the amount of middle frequencies in the signal.
• Knob #4 : High : sets the amount of high frequencies in the signal.

• Knob #5 : Master Volume : adjusts the overall output.