From simple Pitch shifting to powerful harmonies, the Electro Harmonix Intelligent Harmony Machine provides everything a guitarist's heart desires. The sophisticated effect pedal adds up to two matching additional voices to the incoming signal, making even triads easy to implement. For this purpose, the Intelligent Harmony Machine offers two essential operating modes: to add fixed intervals to your own melody, the Polyphonic Override Mode is available, which can be selected via the Rotary Knob with 11 switch positions. In Intelligent Mode, on the other hand, the underlying key can be easily selected via the Rotary Knob, Sharp Button and additional Minor/Major switch to let the pedal automatically form ladder-like harmonies. furthermore, the Momentary Pitch Sweep Time function is on board, which pitches the incoming signal to the respective set interval when the footswitch is pressed.