RoEx Mastering

RoEx Mastering is an automated service that balances and polishes finished mixes for release. It suits independent musicians and producers who want control over loudness and genre direction without a manual mastering session. The free preview lowers the cost of deciding; downloads require a credit or an Automix Pro subscription.

Overview

RoEx analyzes a mix’s tonal balance, dynamics, stereo field and true-peak headroom, then applies EQ, multiband compression, limiting and stereo refinement. That mix-aware approach is more useful than simply raising volume, particularly for makers who want a finished master without managing each processing stage themselves. You can A/B the result and tweak it before deciding whether to download.

Input and output formats include WAV, FLAC and MP3. Stereo input must be 44.1–48 kHz and 16- or 24-bit, so users with other source specifications will need to prepare a compatible file. RoEx says it does not use uploaded audio to train or improve its models, does not share it with third parties, and leaves users with full rights to uploaded and downloaded material. Business use is allowed.

Key features

Three approximate loudness targets—−9, −11 and −14 LUFS—let users steer the output toward different loudness goals, while profiles for Electronic, Hip-Hop, Rock, Acoustic, Pop and Orchestral add genre-specific direction. These choices make the automated result less one-size-fits-all, though they do not replace the judgment of an engineer for a mix that needs detailed intervention.

Automix Pro adds Reference Match, aligning a master’s tone, dynamics, stereo image and loudness to a chosen track. That is a meaningful advantage for users who want a reference-led result, but it is tied to the subscription rather than the individual download credit. Stem mastering is not offered, so RoEx is aimed at finished stereo mixes rather than users who need separate stems processed.

Automix Desktop (Beta), included with Automix Pro, runs the mastering workflow locally on Mac. RoEx says it works without uploads or an internet connection and runs 2–5× faster than the web version. The desktop edition allows tracks up to 10 minutes; the web version caps tracks at 8 minutes. Instant downloads and an account library for masters help keep delivery convenient, and integrations include Ableton Live and DAWproject, with DAWproject exports for Bitwig Studio and PreSonus Studio One.

Pricing

The Free preview plan costs nothing and lets you preview a master before paying to download it. It is the sensible starting point if you want to judge the processing on your own mix, but it does not include a free download.

The Pay-per-download credit costs $7.99, paid once. It covers an individual mastering download, making it the better fit for occasional releases or anyone who wants to avoid a recurring bill. Each mastering download uses a credit, so frequent users may find the subscription more practical.

Automix Pro costs $24.99 a month, billed monthly. It includes unlimited downloads, 32-track mixing, reference track mastering, and Ableton Live Set and DAWproject export. It is the strongest fit for regular users who will make use of those broader production features; for someone mastering only a track now and then, the monthly plan may be more than needed.

Platforms

RoEx Mastering is available on macOS, Windows and the web. The local desktop workflow is Mac-only, while the web version has the shorter 8-minute track limit.

Who it's for

RoEx is a good fit for independent artists and other music makers who want a quick, adjustable master, a free preview and clear ownership of their audio. Pro suits frequent users who need reference matching, unlimited downloads or the additional mixing and export tools. It is less suited to work that requires stem mastering, or to tracks that exceed the applicable length limit.

Pros and cons

• Pros: Free preview and A/B comparison let you assess and refine a result before paying to download.
• Pros: Several loudness targets and genre profiles provide useful direction without requiring manual processing.
• Pros: RoEx says it keeps uploaded audio private and leaves users with full rights, including for business use.
• Cons: A preview is not a downloadable master; each standalone download costs $7.99, paid once.
• Cons: Track length is capped at 8 minutes on the web and 10 minutes on desktop.
• Cons: Reference Match requires Automix Pro, and there is no stem mastering.

Alternatives

AI Music Mastering Software is the category overview for comparing options. Choose AI Mastering instead if you want a free service with unlimited mastering. Matchering is a better fit if you prefer open-source software under the GPLv3 license and do not need a published paid plan.

TrackGleam suits users who want unlimited free mastering with WAV and MP3 output and no watermark or sign-up. MasteringBOX may suit someone who values a daily free master and 90-day storage. Sauce Mastering AI offers a free preview on every track and a free first master. SongUp AI is another option for users seeking AI music tools. SoundBoost.ai may appeal to users who want to revise projects before paying to finalize or download. Auralith Forge offers three one-time full-length masters and unlimited 30-second previews on its free plan.

Verdict

Choose RoEx Mastering if you want a fast, adjustable master with a no-cost preview, and especially if you expect to use Automix Pro’s reference matching or broader production features. Its strongest trade-off is clear: previews do not include downloads, individual masters cost $7.99, paid once, and longer tracks or stem-based workflows call for another solution.