VLA-One is a free voice levelling plugin developed by Studio9 Plugins for producers who want to bring quieter vocal details forward without relying entirely on conventional downward compression.
Released in 2026, the plugin takes inspiration from upward-compression workflows and is particularly useful for vocals, spoken word, podcasts, acoustic recordings and other performances with inconsistent dynamics.
What Is VLA-One?
VLA-One, short for Voice Levelling Amplifier One, is a dynamics-processing audio effect created by Recording Studio9.
The developer began the project after studying the behaviour of Waves MV2 and the discontinued VOLA2 by Sonic Anomaly. The objective was to create a simple free plugin capable of improving the consistency of vocals by increasing lower-level information.
Instead of only controlling loud peaks, VLA-One focuses on making quieter words, syllables and performance details easier to hear.
How Voice Levelling Works
A traditional compressor generally reduces audio when it rises above a selected level. This helps control peaks, but quieter sections may still require automation or additional processing.
Upward-style levelling approaches the problem from the opposite direction. Lower-level material is increased while louder sections remain comparatively stable.
On a vocal recording, this can help reduce the difference between softly delivered phrases and louder words. The result can feel more consistent before the signal reaches the main compressor, equalizer or limiter.
A Practical Tool for Vocal Mixing
VLA-One can be placed near the beginning of a vocal-processing chain to recover details before conventional compression.
A typical workflow could include:
- Corrective equalization
- VLA-One for quieter vocal details
- De-essing
- Conventional compression
- Saturation or tonal processing
- Reverb and delay sends
The exact order will depend on the recording. Producers can also place VLA-One before an equalizer when they want the levelling stage to react to the original signal.
Useful Beyond Lead Vocals
Although VLA-One is primarily presented as a vocal tool, its levelling approach can also work on other dynamic sources.
- Backing vocals and harmonies
- Podcast and voice-over recordings
- Acoustic guitar performances
- Clean electric guitar
- Room microphones
- Soft percussion layers
- Field recordings
- Parallel drum processing
Used carefully, the plugin can reveal subtle information that might otherwise disappear inside a dense arrangement.
Watch the Noise Floor
Increasing quieter material also increases anything contained in those quieter sections.
Room noise, microphone hiss, headphone bleed, breaths and unwanted background sounds can become more noticeable. Recordings should therefore be cleaned before aggressive levelling is applied.
A gate, expander or manual clip-gain edit can help control unwanted noise. Moderate settings are generally more useful than pushing every quiet detail to the front of the mix.
VLA-One Version 1.2.0
The current release is VLA-One 1.2.0.
This version introduced an updated graphical interface, additional code optimization and support for macOS. An earlier update also improved the low-level gain algorithm to create smoother gain transitions.
The plugin does not require a user account, serial number, license manager or online activation.
Formats and Compatibility
- Windows 10 and Windows 11: VST3
- macOS 11 or later: VST3 and Audio Unit
- Linux: VST3
- Plugin type: Audio effect
- Current version: 1.2.0
A compatible DAW or audio-plugin host is required. No VST2, AAX or standalone edition is currently listed by the developer.
Free for Personal and Commercial Projects
VLA-One is completely free to download and use.
The official license allows the plugin to be used in personal and commercial music projects. However, the plugin files cannot be redistributed or sold as a separate product.
No registration is required. Users can download the correct version directly from the Studio9 Plugins website, copy it into the appropriate plugin folder and rescan their DAW.
Download VLA-One from the official Studio9 Plugins website
Final Verdict
VLA-One is a useful free vocal levelling plugin for producers who want to recover quieter details before applying conventional compression.
Its straightforward workflow makes it suitable for vocals, podcasts, acoustic instruments and dynamic recordings that need additional consistency without another interface filled with controls borrowed from a submarine.
With Windows, macOS and Linux support, no registration requirement and a license covering commercial music production, VLA-One is a practical free addition to a modern mixing toolkit.
