The Best Vocal Doubler Plugins in 2026 (Free, Stock, and Paid, Plus Settings by Job)

The short answer: the best vocal doubler for most people is free: iZotope Vocal Doubler, three controls and a natural double on a dry vocal. If you pay for one, Soundtoys MicroShift is the classic for thick, polished width (three styles based on the Eventide H3000 and AMS DMX hardware), Waves Doubler gives you up to four voices with their own gain, pan, delay and detune, Sonnox VoxDoubler adds humanize controls that vary the timing and pitch so the double sounds sung, and Waves Reel ADT recreates the tape double Abbey Road built for the Beatles. Synchro Arts Revoice Pro goes further and generates an editable double track. Whichever you use, put it on a send or a parallel path, keep the lead centered and dry, and check mono. A doubler is the fast alternative to singing the part again. On a hook, a real double still wins.

Doubles are on most of the hooks I've released (Sony, Universal, Ultra, Dim Mak), and my own vocal chain builds width with a doubler on a parallel path, disclosed at the end. Recording and mixing real doubles is covered in how to double vocals; this page is the plugins.

Doubler, chorus, widener: what's actually different

Waves explains the core difference in its Doubler user guide: a chorus or flanger modulates the delay, which produces a shifting comb-filter sound, while a doubler decorrelates the copy with detune, so it reads as another take rather than as an effect. That's the sound you want under a lead vocal. For chorus itself, on synths, guitars and stacks, the best chorus plugins compares the free, stock and paid picks.

The best vocal doubler plugins, compared

Prices, features and bundle contents change, so check each developer's site before you buy or download. Get free plugins from the developer's own site only.

The free picks

iZotope Vocal Doubler. Free from iZotope; you sign in with a free account to download it. Three controls: Separation sets how in time the double is with the original, Variation adds subtle pitch fluctuation, and Amount sets how much of the double you hear. An Effect Only option outputs just the double, which is how you run it on a send or build several doubled tracks. iZotope recommends it on clean, dry vocals. For a quick, natural double on a single take, it's the one I'd install first.

Acon Digital Multiply. A free chorus that Acon describes as simulating up to six extra voices, each through its own phase-randomizing filter to avoid the harsh comb filtering of a conventional chorus, with pitch and level modulation, a five-band EQ and a modulated pre-delay. At low settings it thickens a backing stack; pushed, it's a chorus. Use it on stacks more than on the lead.

Polyverse Wider. Not a doubler: a free widener that Polyverse says stays fully mono compatible, because the widened signal stays in phase with itself when it's summed. Version 2 added a low-frequency bypass and a mono check button. It's the safe pick when a hook has to hold up on phones, and it's also in the best stereo imaging plugins.

The paid picks

Soundtoys MicroShift. Three styles based on hardware Soundtoys names as the Eventide H3000 and the AMS DMX 15-80, with Detune, Delay, Mix and a Focus control that, per Soundtoys, sculpts away the low and mid frequencies that make some tracks muddy. It's the fastest route to a thick, wide, slightly polished lead.

Waves Doubler. Two-voice and four-voice components, in mono, mono-to-stereo and stereo versions, per Waves' user guide. Each voice has its own gain, pan, delay and detune, with modulation and an EQ section on top. Waves' own starting point: one voice detuned down 4 cents and panned right, another up 4 cents and panned left, at about -12 dB; bring them toward -6 dB and the vocal opens right up.

Sonnox VoxDoubler. Two plugins. Widen creates two new mono voices panned left and right of the original; Thicken creates a stereo double that overlaps the original, like singing the part twice. Both have Mix, Depth and Tone, plus humanize Timing and Pitch controls that vary how closely the double follows the lead, so it doesn't sound like a static copy. Widen adds a Width control, and a Track/Aux switch lets you use either one on the vocal or on a send.

Waves Abbey Road Reel ADT. An emulation of Abbey Road's artificial double tracking, the tape technique the studio created for the Beatles. It has separate source and ADT sections, and a varispeed control you can move by hand or with an LFO, which is where the classic wobble comes from. Check Waves' page for the full control set.

Eventide MicroPitch. Eventide describes it as descended from the H3000: two pitch-shifted voices of up to 50 cents either way, each with up to 2 seconds of delay, plus modulation, feedback and tone. Small detune with short delays doubles; longer delays turn it into a slapback.

Synchro Arts Revoice Pro. A different kind of tool. Its Doubler process generates a new double track from the lead, with controls for timing variation, formants and vibrato, and you bring the result back into your DAW (directly, through ARA, in DAWs that support it). Synchro Arts says it uses variable delay and formant shifts rather than a static offset. It also includes APT, which transfers the timing and pitch of one take onto another, useful for tightening doubles you actually sang. It's the most involved option here; check Synchro Arts for current versions.

The stock route

You can build a doubler from stock parts on an aux: a pitch shifter set a few cents off, a short delay, and the return panned away from the center.

• Logic: Pitch Shifter has Semi Tones, Cents and Mix controls and a Timing menu (Apple describes Vocals for melodic material and Speech for rap). Leave Semi Tones at 0, set Cents a few cents up on one aux and down on another, Mix at 100%, add 10 to 30 ms with a delay plugin, and pan the two returns left and right. The rest of Logic's vocal stock plugins are in the Logic Pro vocal chain.
• Ableton: Shifter (Live 11.1 and later, in Standard and Suite) sets semitones with Coarse and cents with Fine in Pitch mode, and with Wide switched on, its Spread control shifts the two channels in opposite directions: a doubler in one device. Put it on a return track at 100% wet, and add a short delay after it if you want more separation.
• FL Studio and Pro Tools: the free iZotope Vocal Doubler is the simpler route than building one from stock plugins.

Vocal doubler settings chart, by job

These are starting points for a typical lead, and every plugin scales its controls differently, so set them by ear and check mono. Very short delays (under about 10 ms) are where comb filtering gets obvious when the double folds to mono. Much past 40 ms, the double starts to read as a separate echo, which is slap territory; for that, the delay time calculator gives you times that sit with the tempo.

How to set up a vocal doubler

1. Start with a clean, tuned, dry lead. Doubling a pitchy or reverb-soaked vocal doubles the problem. Tune first; how to tune vocals covers when and how.
2. Put the doubler on a send or a parallel path, 100% wet (or Effect Only, or VoxDoubler's Aux mode). Keep the lead's own channel dry and centered.
3. Start small. A few cents of detune and 10 to 20 ms of delay. Raise them until the vocal feels bigger, then back off a notch.
4. Pan the doubled voices away from the center. The center belongs to the lead.
5. Clean up the return. High-pass it around 150 to 250 Hz so the double adds width without mud, and de-ess it harder than the lead, because stacked esses add up fast. MicroShift's Focus and the Waves Doubler EQ do part of this job inside the plugin.
6. Set the level by muting. Bring the return up until you'd miss it if it were gone, not until you hear it as a second voice.
7. Check mono. Sum the mix to mono. If the lead drops or the hook thins out, reduce the detune, the width or the return level. A correlation meter like the free Voxengo SPAN shows it too: mostly between 0 and +1 is safe.
8. Automate it. Less on the verses, more on the hooks, so the chorus gets bigger by contrast.

Mistakes that make doubled vocals sound cheap

• The doubler on the lead's own insert at 100%. The lead itself goes phasey and smeared. Use a send.
• Too much detune. Past a point it stops sounding like a second take and starts sounding like a chorus pedal; how to make vocals sound wider calls it chorus-y and cheap, and it is.
• Width on width. A doubler, a chorus, a wide reverb and a ping-pong delay on the same vocal is how a lead disappears in mono.
• Doubling the reverb. Double the dry vocal, then send the lead and the double to the same reverb.
• One setting for every vocal. A breathy verse and a belted hook want different amounts.

Where I land (and the disclosure)

For most people: iZotope Vocal Doubler, free, on a send, with the mono check. Pay when you can hear what's missing: MicroShift for polished modern width, Waves Doubler if you already work in Waves and want control voice by voice, VoxDoubler if the free one sounds too static, Reel ADT for the classic tape sound. On hooks, sing the double anyway; plugins are for the parts you can't re-record.

My own chain does it in parallel: the Ultimate Vocal Chain has a Widener macro (a doubler on the sides of a parallel split) and an FX macro (an octave-up layer with drive and doubling), so the lead stays centered while the width comes up around it. Waves Doubler is one of its 15 plugins, and the product page has a loudness-matched before/after player, so you can hear it on a real vocal before you buy. I'm biased; any doubler above does the job on a send.

Quick answers

What is the best vocal doubler plugin? For most people, iZotope Vocal Doubler, which is free. The best paid picks are Soundtoys MicroShift for thick, polished width, Waves Doubler for control voice by voice, and Sonnox VoxDoubler for doubles that sound sung.

What is the best free vocal doubler? iZotope Vocal Doubler: Separation, Variation and Amount controls plus an Effect Only mode, free from iZotope. For thicker backing stacks, Acon Digital Multiply is a free multi-voice chorus.

Is a vocal doubler the same as a chorus? No. A chorus keeps modulating the delay, which gives movement and a comb-filter shimmer. A doubler uses small amounts of detune and delay, sometimes randomized, so the copy sounds like a second take. On a lead vocal, you usually want the doubler.

Should a vocal doubler go on the vocal or on a send? On a send or a parallel path, 100% wet, with the doubled voices panned away from the center. The lead stays dry and centered, so it holds up in mono.