Duet is a double-tracking/harmonizer effect developed to enhance vocals and instruments by thickening the sound and adding a rich glossy sheen to the audio material.

Duet works by independently pitch-shifting the left and right inputs allowing pitch to be manipulated in real-time, while still maintaining the time duration of the audio. By also delaying the re-pitched audio and altering its pan position, Duet can accurately create the illusion of multiple voices and add a luscious texture to your music.

Duet can also be used to create a silky chorus effect through modulation of the pitch-shift amount and to add movement and texture to synths.