Pedal effect for electric guitar - analog feedback/boost. FEEDBACK: The big knob. This controls the amount the SEND (external effect input) is forced back into the RECEIVE (external effect output). This creates feedback within the circuit to create new unbridled and experimental effects and results. The more this knob is turned up the more intense and explosive the effects are. The ACTIVE BOOST is also in this loop and (if engaged) will be forced back into itself to create its own wild and interesting sounds if nothing is plugged into the loop. ON: This toggle switch when in the ON position turns on the ACTIVE BOOST circuit. PHASE: Flips the phase of the effects loop, only when the ACTIVE BOOST is on. GAIN: Controls the amount of gain of the ACTIVE BOOST circuit. LIMIT: Limits the output volume of the entire pedal only when the ACTIVE BOOST is engaged. STOMP SWITCH: Bypasses the effect.