TonalBrain

TonalBrain is an AI mixing plugin for multitrack producers who want a starting mix generated from an analysis rather than a blank session. It suits users working in supported DAWs on macOS or Windows, particularly those who value editable processing and one-time credit purchases. Its strongest case is fast, repeatable mix balancing; it is a poor fit when you need stereo mastering or more than 24 tracks in one run.

Overview

TonalBrain analyzes a multitrack session for masking, dynamic collisions, and balance problems, then creates settings for the tracks. A run handles up to 24 tracks, so it is aimed at songs or stem groups of moderate size rather than very large orchestral or post-production sessions. You can save four section snapshots per project, allowing analysis of different song sections instead of treating the arrangement as uniform.

Raw audio remains on your computer. Spectral analysis data is sent to TonalBrain’s servers to calculate settings, and the maker says it does not store or share audio content or analysis data beyond processing the request. Account data is encrypted at rest by Supabase, Stripe handles payments without TonalBrain retaining complete card details, and the policy describes encryption in transit and at rest, secure authentication, access controls, and recurring security reviews. Email support usually responds within a few hours.

Key features

Generated, editable processing

The plugin applies EQ and compression across every track and can add de-essing, stereo widening, sidechain and optical compression, tape saturation, and harmonic excitation. Modules can be edited, removed, or reordered. That makes the output a workable set of decisions rather than a locked render: engineers can keep corrective EQ while discarding saturation, or change the processing order to suit the session.

Snapshots and A/B recall

Each analysis run is saved as a preset. Switching presets updates every track at once, which is useful for comparing alternate analyses without manually matching settings. The four-snapshot limit means it is best used for a small number of clearly defined sections, not an unlimited archive of arrangement variations.

Plugin compatibility

TonalBrain ships as VST3, AU, and AAX for compatible hosts including Ableton Live, Logic Pro, Pro Tools, FL Studio, Cubase, Reaper, and Studio One. It supports macOS 10.15 or later with native Apple Silicon M1, M2, and M3 support, plus 64-bit Windows 10 and 11. The broad format and DAW coverage makes it practical for most modern desktop studios, but it remains a plugin rather than a standalone web workflow.

Pricing

All three plans are one-time purchases. There is a free plan, but no free trial; the paid plans differ by credit allowance and effective analysis cost. One credit buys one analysis run, and credits never expire.

Starter keeps the upfront cost low but gives up the lower per-run rate of Creator and Studio. Studio is the economical choice only if you will actually use its 600 analyses; there is no recurring renewal to maintain, but unused credits are tied to the purchase rather than a subscription cycle.

Platforms

TonalBrain runs on macOS 10.15 or later, including native M1/M2/M3 Macs, and 64-bit Windows 10 or 11. It requires a compatible DAW and supports VST3, AU, and AAX formats.

Who it's for

Choose TonalBrain if you mix multitrack songs or stem groups and want automated EQ, dynamics, and optional spatial or coloration modules that remain under your control. The credit system suits producers who prefer a one-time purchase to a subscription. It is less suitable for stereo-mastering work, sessions beyond 24 tracks per run, or anyone seeking a browser-based tool.

Pros and cons

• Pros: Editable and reorderable processing lets you refine or remove generated decisions; whole-session preset switching makes A/B comparisons quick; native Apple Silicon support and VST3, AU, and AAX formats cover major DAWs; credits never expire; raw audio stays local.
• Cons: Each run is capped at 24 tracks; only four section snapshots can be saved per project; spectral analysis data leaves the machine for processing; it is not intended for stereo mastering; there is no free trial.

Alternatives

StemDesk is the better choice if you need Linux support, local AI, stem separation, and WAV, MP3, FLAC, or AAC export, with a free plan that includes compressor, gate, and limiter plugins.

Box fits Mac users who want a free tier with session scanning, basic mix analysis, and a stereo-field view.

NeuroMix AI is preferable for a browser workflow with five mixing sessions and five downloads per month on its free tier, though uploads are limited to 10 MB and files are retained for seven days.

MIXaiR is an alternative paid desktop option for Linux, macOS, and Windows; pricing is handled through Salsa Sound for a trial.

StemMaster suits users who prefer a monthly or annual subscription and support for up to three machines.

Cryo Mix is a paid web alternative with a free trial.

EZmix 3 is a paid desktop alternative with a free trial; the listed upgrade requires owning an earlier EZmix version.

FUSER is another paid macOS and Windows plugin with a free trial and a one-time price of 59.00 GBP.

Browse the AI Audio Mixing Software list for more options.

Verdict

TonalBrain is a sensible pick for desktop producers who want fast, editable starting settings and predictable one-time costs. Its main reason to choose it is the combination of whole-session recall, flexible processing modules, and non-expiring credits. Look elsewhere if your work centers on stereo mastering, exceeds 24 tracks per analysis, requires Linux or web access, or demands a trial before paying.