Pitchproof is an audio plug-in designed to shift the pitch of an input signal while preserving the original sound quality. It combines classic pitch shifting styles with modern processing to create an effect similar to guitar harmonizer pedals. This provides musicians with a tool that maintains signal integrity and delivers authentic pitch shifting tones that are suitable for various musical contexts.

The plug-in features a Blend control that allows users to mix the dry signal with the pitch-shifted output, enabling harmony creation or fully shifted sounds. Users can select specific pitch intervals or intelligent harmonies tailored to major or minor scales, enhancing musical compatibility. The Key setting guides the harmony generation by defining the scale, ensuring the best results when notes are played within the selected key. Additionally, a Detune option adds subtle pitch variations for a more natural and organic sound.

Pitchproof offers flexible routing options, including mono mode for lower CPU usage and stereo mode for richer input processing. A Transient Fix feature helps maintain the clarity of sharp attacks, especially with percussive sounds, though it can be disabled if needed to avoid glitches. An integrated guitar tuner is also included, providing real-time pitch detection that can be conveniently positioned on-screen, adding a practical tool for musicians using this plug-in.