The PitchFactor Harmonizer pedal gives you Eventide's 10 best pitch-changing effects from the past 36 years without compromising quality or flexibility. This plug-and-play expression pedal gives you control over the wet/dry mix or any combination of parameters. Control program changes and vary parameters continuously via MIDI. The Pitchfactor Harmonizer supports instrument or line-level inputs and outputs. The Eventide PitchFactor plays well with others and adapts seamlessly with a wide variety of amps and other foot pedals. The Eventide PitchFactor Harmonizer Pedal is also easy to upgrade—you can download new software from the internet and install via USB.