Best Harmonizer VST/AU Plugins; Free & Premium!

Harmonies are the best thing ever! I love adding voice after voice since it makes any mix sound that much better and powerful!

Now, I know that recording harmonies can be really tough to do, but fret not, for I have a solution.

Harmonizer plugins allow you to create harmonies of an audio track in a matter of seconds adjusting the pitch to where you want it to be.

The great thing is that not only can these plugins be used on vocals, but also on guitar solos, and even other instruments.

Now, without further ado, let’s get into the list!

Premium Harmonizer VST/AU Plugins

These are by far the best ones, but they will cost you a bit!

Harmony Engine Evo by Antares ($249)

I assume that you all know Antares by now; they are the creators of the Auto-Tune pitch correction tool that everyone is using nowadays.

Their Harmony Engine allows you to create harmonies for vocal arrangements with incredible ease, allowing anyone, even someone who is absolutely new to music production, to create good-sounding harmonies.

You can create up to 5 different harmonies with just a single vocal file, allowing you to achieve amazing choir-type harmonies in no time.

Now, it is a bit expensive ($249), but you probably won’t find another piece of software that easy to use and that actually works well.

Features

  • Four high-quality, formant-corrected harmony voices with independent vocal character, vibrato, and pan settings
  • Five channels of the unique CHOIR Vocal Multiplier
  • Antares Throat Modeling technology

Find out more about Harmony Engine here.

Octavox by Eventide ($199)

Octavox takes any incoming tones—even drums—and outputs up to eight voices based on the chosen key and timing interval.

Based on technology from Eventide’s flagship H8000 hardware effects processor, Octavox will take your melodies and ideas and let you create fantastic melodies, harmonies and even rhythmic sequences.

It comes with over 70 ready-to-use presets that should get you going in no time.

It features an 8-voice diatonic pitch shifter effects processor with panning, delay, detune, and feedback to create beautiful harmonies and sequences.

Find out more about Octavox here.

Quadravox by Eventide ($99)

Quadravox is the smaller and more affordable version of the previous plugin on this list.

It is a composition tool designed to inspire songwriting, stack harmonies, widen instruments and offers creative innovative rhythmic sequences.

You can take any incoming tones, including drums, and generate up to four voices based on the chosen key and timing interval.

It’s optimized for multiple instances so your tracks can interact with each other by way of beautiful harmonies and groovy sequences.

Each of the four voices can be independently manipulated by level, panning, delay time with feedback, and pitch, including the type of musical interval, and the effects can be sync’d to your DAWs tempo.

Find out more about Quadravox here.

OVox by Waves ($69)

OVox is a vocal effects processor that can work as a plugin on any DAW or as a standalone app.

With it you can create rich vocoder, talkbox, harmonizer, pitch/tune, and vocal arpeggiation effects in a super easy and intuitive way.

MIDI control is optional, meaning that you can use OVox without a keyboard or controller.

All you need to do is fire up the app, or load it up in your favorite DAW, and that’s it! You’re good to go.

It comes with hundreds of presets that you can use, or you can start from scratch, up to you.

For extra morphing power, you get nine independent drag-and-drop modulators that can modulate any control within the plugin.

These include four LFO/Sequencer modulators with your choice between 40 LFO shapes and 16-step sequencer patterns.

Find out more about OVox here.

Free Harmonizer VST/AU Plugins

PitchProof by Aegan Music

Pitchproof is a free audio plug-in that can shift the pitch of the input and it works very well on vocals and guitars.

The effect is meant to combine old styles of pitch shifting with the quality you expect from modern plug-ins. The result is this pitch “pedal” simulation that has most of what is great about guitar harmonizer pedals, and still preserves the signal’s integrity.

The Blend control will let you use a fully shifted output, or the dry and wet signals mixed, creating a harmony.

The Pitch menu lets you select pitches like +7 or -7, or harmonies which are intelligent pitch shift effects.

These harmonizer effects are intended to be played in a certain major or minor scale, which means that if you select a scale and play notes that aren’t in that scale, the effect won’t work as intended.

There is a Detune option available which is good for getting a more natural effect.

Harmony Options

Find out more about PitchProof here.

Duet by Martin Eastwood

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

Duet works by independently pitch-shifting the left and right inputs using a novel synchronous overlap and add technique, allowing pitch to be manipulated in real-time while still maintaining the time duration of the audio.

Duet can accurately create the illusion of multiple voices and add a luscious texture to your music.

It sounds very natural and it’s also super easy to use!

Find out more about Duet here.

Conclusion

If you don’t want to spend anything on one pf these plugins, then absolutely go with PitchProof since it’s the best free one I could find.

However, you will probably need to upgrade pretty soon, and this is where I’d recommend something like the Antares Harmony Engine since it’s extremely powerful.

I hope this information was useful!

Have a wonderful day!

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