RoEx launches Automix Desktop, AI mixing and mastering that runs locally on your Mac

RoEx launched Automix Desktop, a native Mac app that runs its AI mixing and mastering on your own machine instead of in the cloud. The early-access beta processes stems locally on Apple Silicon, so your audio never leaves your computer unless you send it somewhere yourself.

Speed and privacy, in one download.

What Automix Desktop does

The headline change is a file. RoEx created the .amx format, and double-clicking one on a Mac opens a full mixing and mastering session inside Automix Desktop. Under the hood is the same engine RoEx says has processed more than 6 million tracks, now running offline.

What you get in the beta:

• Local processing on Apple Silicon, with no uploads to the cloud
• Offline use for up to 24 hours
• 2-5x faster mixing than the web version
• Unlimited exports on the Pro plan
• Export to Ableton, Bitwig, and Fender Studio, with more DAWs planned

There is an Intel Mac build too, and RoEx says Windows and Linux versions are coming. Automix Desktop is free to try, and RoEx CEO David Ronan posted the full announcement on LinkedIn.

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Desktop is step one of something much bigger we're building for producers and their DAWs.

What it means for producers

For working producers, the friction with web-based mastering has always been the round trip: bounce, upload, wait, download, reimport. Automix Desktop collapses that into a local session that lands back in your DAW. RoEx already built a direct Automix integration for Ableton Live, and the desktop app extends that thinking to Bitwig and Fender Studio. If you have compared AI mixing and mastering tools or weighed a mastering plugin against Ozone, the pattern is clear: these tools are moving off the web and into the DAW where the work happens.