Quadravox

Eventide Quadravox is a four-voice harmonizer and pitch-shifting effect for building layered melodies, widening instruments and turning simple phrases into rhythmic patterns. Feed it vocals, guitar, synths or drums, then shape each voice with independent pitch, level, pan and delay controls with feedback. Key-based harmonies and tempo-synced delays make it useful for anything from subtle vocal support to cascading melodic sequences. Its Notation Grid places pitches on a musical staff and notes across a quantized timeline, offering a visual way to arrange harmonies. More than 60 presets provide starting points, while MixLock and KeyLock preserve your mix balance and musical settings as you browse. Randomized micro-pitch shifts add natural variation, and disabling pitch tracking opens up creative processing for polyphonic and percussive material. Quadravox suits electronic producers, songwriters and guitarists looking for fresh harmonic ideas.