The Soundtoys pitch-correction plug-in Little AlterBoy is a voice effect that changes the pitch and the formants (the quality that gives a voice its gender-like character) of a voice in real time. It can also make hard-tune style effects, robot voices, and vocoder-like effects that control pitch with MIDI (performance information about which notes are played and how strongly).
A pitch-correction plug-in is a tool that fixes pitch that has gone out of tune in a vocal. You can fix it naturally, or use it as a robotic effect.
In this article we compare Little AlterBoy with 15 pitch-correction plug-ins and rate how well it serves its purpose on three criteria. The basis is official manufacturer information.
Disclosure: This article contains affiliate links. If you buy through them, SoundBounty may earn a commission at no extra cost to you. Prices and sale information are as of the date we checked them and can change.
Score 1.6 / 5 (average of the 15 products compared: 2.8)
- Specs last checked
- 2026/09/25
- Natural result
- For effects
- Real time
- Real time + MIDI
- Harmony and multiple tracks
- One note line at a time
- Price (store, date)
- $99 [Official, checked Oct 26]
Summary
Among the 15 pitch-correction plug-ins, Little AlterBoy is rank C. The ranks run S, A, B and C, and C is the lowest. Averaging the scores for each criterion (out of 5, with the one criterion that matters most for the purpose counted double) gives 1.6.
Things to keep in mind
- Natural result (1 points): there is little fine adjustment, which limits how natural the correction can be.
- Real-time correction (2 points): it is not suited to real-time use.
- Harmony and multiple tracks (1 points): it has few features for handling harmonies together.
Who it suits: people who want to make voice effects easily, such as hard-tune style effects and changes of voice quality.
Main features of Little AlterBoy
Change the pitch and the formants
Little AlterBoy is a Soundtoys voice effect that changes the pitch of a voice and the formants, which set how gender-like the voice sounds, in real time. The manufacturer explains that a wide range of voice changes can be made with one plug-in.
Hard-tune style and robot voices
You can make the “hard-tune” effect, which snaps pitch to a scale, and a robot-like voice locked to a single pitch. One model of the tube saturation of Decapitator is also included.
Control pitch with MIDI
You can control the pitch of the voice with MIDI in your DAW to make vocoder-like or harmony-like effects. A mix knob also lets you layer it over the original voice.
Video: “Getting Started With Soundtoys Little AlterBoy” (official soundtoys YouTube channel; narration in English) Watch on YouTube
Where it is useful
- Changing the pitch and formants to make a voice that sounds like someone else
- Applying a hard-tune style effect
- Controlling the pitch of the voice with MIDI to make a vocoder-like effect
Rating by criterion
Natural result: 1 / 5
We look at how finely you can adjust to correct a vocal naturally.
Its effects are mainly for processing a voice, such as hard-tune style and locking to a single pitch.
If “natural result” matters most to you, Melodyne 5 studio and Melodyne 5 editor (5 points) are a better fit.
Speed: 3 / 5
We look at the features that make the correction work faster.
It is an automatic type that gives an effect just by being applied. It does not support ARA (a mechanism that connects to the DAW so you can edit directly without loading the track).
Real-time correction: 2 / 5
We look at how easy it is to use for streaming and for recording through the plug-in.
It can change the pitch and formants of a voice in real time, and pitch can be controlled with MIDI.
If “real-time correction” matters most to you, AutoTune Advanced (5 points) is a better fit.
Harmony and multiple tracks: 1 / 5
We look at how easy it is to handle harmonies and backing vocals.
It is a type that processes a single-note voice. The mix knob can layer harmony-like voices, but multi-track editing and automatic harmony generation are not described.
If “harmony and multiple tracks” matters most to you, Melodyne 5 studio (5 points) is a better fit.
How we score (Pitch-correction plug-ins)
| Criterion | Basis | 5 pt | 4 pt | 3 pt | 2 pt | 1 pt |
|---|---|---|---|---|---|---|
| Natural result | How finely you can adjust to correct a vocal naturally | Per note, you can adjust wobble, vibrato, formants and even sibilance | Per note, you can adjust vibrato and formants | Per note, you can correct pitch and timing | You can adjust only how the automatic correction is applied (speed and so on) | Automatic correction only, with no stated way to adjust naturalness |
| Speed | Features that make the correction work faster | Automatic macros, ARA and detection of key or chords are all included | Automatic correction (macros) and ARA | Either automatic correction or ARA | Mostly manual work | — |
| Real-time correction | Ease of use for streaming and recording through the plug-in | An ultra-low-latency mode (such as under 1 ms) and pitch specification by MIDI | Low-latency real-time correction and pitch specification by MIDI | Low-latency real-time correction | Real-time correction, but low latency is not stated | No real-time correction (the type you use after recording) |
| Harmony and multiple tracks | Ease of handling harmonies and backing vocals | You can edit several tracks side by side and also fix notes inside chords | You can edit several tracks side by side, or make harmonies automatically | You can fix notes inside chords (one track at a time) | Single notes only, but with aids such as turning a vocal into MIDI | You fix single-note tracks one at a time |
Each criterion is scored from 1 to 5 on how well the product serves one goal: correcting a cover-song vocal. Scores follow the conditions in the table above, and the rank is based on an average in which "Natural result", the most important criterion for cover songs, counts double. The basis is official manufacturer information. Sound quality and CPU load are not measured, so they are not scored; reviews from trade magazines are introduced in the articles for reference. Price is not part of the score. Features that cannot be confirmed from the manufacturer's or a retailer's description are scored as if absent.
Little AlterBoy system requirements and getting started
| Operating system | Windows 10 or later / Mac (macOS 10.15 or later) |
|---|---|
| Plug-in formats | AAX, VST2, VST3, AU (64-bit). Apple silicon supported |
| Other | A free 30-day trial is available. Windows on ARM is not supported |
| OBS (streaming) | Not confirmed |
Checked on the manufacturer’s official pages on October 17, 2026.
Compared with other pitch-correction plug-ins
Click a heading to sort. On a phone, the table scrolls sideways.
| Product | RankAvg. score | Natural result | Real time | Harmony and multiple tracks | Free | OBS (streaming) | Price (store, date) |
|---|---|---|---|---|---|---|---|
| CelemonyMelodyne 5 essential | B 2.6 | Pitch and timing | None | One note line at a time | — | Not listed | $99 [PB, checked Oct 26] |
| CelemonyMelodyne 5 assistant | A 3.6 | Down to wobble and sibilance | None | Audio to MIDI | — | Not listed | $249 [PB, checked Oct 26] |
| CelemonyMelodyne 5 editor | A 3.8 | Down to wobble and sibilance | None | Edits chords too | — | Not listed | $399 [PB, checked Oct 26] |
| CelemonyMelodyne 5 studio | S 4.2 | Down to wobble and sibilance | None | Multiple tracks + chords | — | Not listed | $699 [PB, checked Oct 26] |
| AntaresAutoTune Pro 11 | A 4.0 | Adjust per note | Low latency + MIDI | Makes harmonies automatically | — | Not listed | Not listed |
| AntaresAutoTune Advanced | B 2.6 | Speed, Humanize | Under 1 ms + MIDI | One note line at a time | — | Not listed | $450 [Official, checked Oct 26] |
| AntaresAutoTune | C 2.2 | Speed, Humanize | Low latency | One note line at a time | — | Not listed | $250 [Official, checked Oct 26] |
| MeldaProductionMAutoPitch | C 1.6 | Automatic only | Real time | One note line at a time | Free | Not listed | Not listed |
| Synchro ArtsRePitch Elements | C 2.4 | Pitch and timing | None | One note line at a time | — | Not listed | $69 [Official, checked Oct 26] |
| Synchro ArtsRePitch Standard | A 3.4 | Shape, formants | None | Multiple tracks | — | Not listed | $149 [Official, checked Oct 26] |
| WavesWaves Tune Real-Time | C 2.4 | Automatic only | Ultra-low latency + MIDI | One note line at a time | — | △ (via Waves StudioRack, per Waves) | Not listed |
| WavesWaves Tune | C 2.0 | Pitch and vibrato | None | One note line at a time | — | Not checked | Not listed |
| Synchro ArtsRevoice Pro 5 | A 3.6 | Down to vibrato, formants, sibilance | None | Matches multiple tracks | — | Not checked | $299 [Official, checked Oct 26] |
| Auburn SoundsGraillon 3 | C 2.0 | Automatic only | Real time | One note line at a time | Free | Not checked | Not listed |
| SoundtoysLittle AlterBoy | C 1.6 | For effects | Real time + MIDI | One note line at a time | — | Not checked | $99 [Official, checked Oct 26] |
Features checked on each manufacturer's official website on September 25, 2026. Check the store page behind the buy button for the price.
Read next
- MAutoPitch: features and rating (rank C)
- Waves Tune Real-Time: features and rating (rank C)
- Revoice Pro 5: features and rating (rank A)
Comments