sonible smart:chain channel strip plug-in: features and spec-based rating

sonible’s smart:chain is a channel strip that puts eight AI processors into one plug-in, including EQ, compressor, a processor that tames harsh resonance, a gate, automatic level adjustment and saturation (a faint distortion, as if passed through analog gear). It also has a feature that automatically adjusts the level balance of several tracks across the whole song.

A vocal processing plug-in puts the processing a vocal mix needs (EQ, compression, reverb and so on) into one plug-in. Some products also have an AI build the groundwork for you.

In this article we compare smart:chain with 10 vocal processing plug-ins and rate how well it serves its purpose on three criteria. The basis is official manufacturer information.

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Summary

Among the 10 vocal processing plug-ins, smart:chain is rank B. The ranks run S, A, B and C, and B is third from the top. Averaging the scores for each criterion (out of 5, with the one criterion that matters most for the purpose counted double) gives 3.2.

Strengths

• AI groundwork (4 points): the AI listens to the vocal and builds the groundwork of the processing together.
• Fine adjustment (4 points): you can work in detail starting from the AI’s result.

Things to keep in mind

• Pitch correction and harmony (1 points): it has no pitch correction or harmony features.

Who it suits: people who want to quickly build the groundwork of the whole mix with AI, not just the vocal.

Main features of smart:chain

Eight processors that work together

smart:chain puts eight processors, including EQ, compressor, gate and saturation, into one plug-in. The manufacturer explains that one analysis result is shared by all eight processors, creating a unified flow of processing instead of separate ones. You can then adjust each processor directly to build on the settings.

Auto Level evens out a whole project

Auto Level looks at the relationship between the analyzed tracks and makes a starting point for the level balance that suits the genre across the project. It reduces the work of building a rough mix from nothing. There is also a feature that adjusts the sense of distance between tracks, front to back.

Video: “smart:chain by sonible | The intelligent channel-strip” (official sonible YouTube channel; narration in English) Watch on YouTube

Where it is useful

• Inserting it on vocal and backing tracks to make a starting point for a rough mix
• Tidying up the EQ, compression and gate of a vocal with a single plug-in
• Evening out the level balance of tracks quickly with Auto Level

Rating by criterion

AI groundwork: 4 / 5

We look at whether the AI builds the vocal processing for you.

The processors share their analysis results and make a unified flow of processing. Auto Level also adjusts the level balance of the whole project automatically.

Cleaning up the recording: 3 / 5

We look at how it deals with home-recording noise and the room’s ring.

It has a gate and processing that tames harsh resonance (de-harshing).

Fine adjustment: 4 / 5

We look at whether you can work on the AI’s result yourself.

You can adjust eight processors directly, including EQ, compressor, gate and saturation. They do not become separate plug-ins.

Pitch correction and harmony: 1 / 5

We look at features for correcting pitch and making harmonies.

It has no pitch correction or harmony features.

If “pitch correction and harmony” matters most to you, Nectar 4 Advanced and Nectar 4 Standard (5 points) are a better fit.

How we score (Vocal processing plug-ins)

Criterion	Basis	5 pt	4 pt	3 pt	2 pt	1 pt
AI groundwork	Whether the AI builds the vocal processing for you	An AI assistant, plus reduction of overlap with the backing track and automatic level adjustment	An AI assistant, plus reduction of overlap with the backing track	An AI assistant only	—	—
Cleaning up the recording	Dealing with home-recording noise and the room's ring	Noise and room reflections can be removed with AI	—	Has a gate and processing that tames harsh resonance	—	No mention of dealing with noise or room sound
Fine adjustment	Whether you can work on the AI's result yourself	Each processor can be operated directly and also used as a separate plug-in	Compressor, EQ, de-esser, reverb and more can be operated directly	—	You only adjust with a few knobs	—
Pitch correction and harmony	Correcting pitch and making harmonies	Comes with pitch-correction software (Melodyne essential) and can add harmonies	—	Can add harmonies or voice layers	—	No pitch correction or harmony features

Each criterion is scored from 1 to 5 on how well the product serves one goal: quickly getting a cover-song vocal into a state ready to mix. Scores follow the conditions in the table above, and the rank is based on an average in which "AI groundwork" 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. The "OBS (streaming)" column in the table shows whether the official page lists the VST2 format that the streaming software OBS Studio can use (○). OBS does not support the VST3 format. It is not part of the score.

smart:chain system requirements and getting started

Operating system	Windows 10 (64-bit) or later / Mac
Plug-in formats	Windows: VST3, AAX / Mac: VST3, AU, AAX
Trial	30-day trial available
OBS (streaming)	Does not work as it is (VST3 only). It can be loaded through a bridge plug-in

Checked on the manufacturer’s official pages on September 27, 2026.

Compared with other vocal processing plug-ins

Click a heading to sort. On a phone, the table scrolls sideways.

Read next

• prime:vocal: features and rating (rank B)
• CLA Vocals: features and rating (rank C)
• Vocal Rider: features and rating (rank C)
• Evoke: features and rating (rank C)