Creative / FX · AU · VST3

SUS4 Harmonizer

Key-aware pitch shifting with formant-tilt correction for stacked harmonies.

Included in the SUS4 plugin bundle. One licence, every plugin, every update.

Key-aware pitch shifting with formant-tilt correction for stacked, believable harmonies. Set the key, dial the intervals, and get thirds and fifths that sit naturally in the track.

Build a whole vocal stack or thicken a lead from a single take.

Sus switch audio demo

Flip between Clean and Sus to hear the difference.

Ready to play

CleanClean mode: the plugin behaves predictably, following its designed function

SusSus mode: the plugin does something unexpected and musical

Upgrade path

You're viewing one plugin. The bundle includes all 25.

One licence, every plugin in the SUS4 suite, every update. The SUS4 Plugin Bundle gives you studio-grade processing across your entire workflow — from tracking to mastering — all in one purchase.

Pairs well with

+ 21 more

Already own one plugin? Your licence unlocks all 25.

From the studio

Made by a working recording studio

SUS4 is made by 4chordsStudios, a recording studio in a quiet UK village with a live room and a Dolby Atmos mixing room. We work with independent artists from the first session to release day and beyond.

See the studio →