Multitrack Mixing: Create a balanced mix in minutes

Multitrack Mixing: Create a balanced mix in minutes

Automix by RoEx transforms raw multitrack recordings into clean, professional-grade mixes - without the need for complex plugins or a studio setup.

Automix by RoEx transforms raw multitrack recordings into clean, professional-grade mixes - without the need for complex plugins or a studio setup.

Simply upload your stems and RoEx’s intelligent audio engine will do the rest.

Automix balances levels, pans instruments, enhances clarity, and shapes dynamics - all in a matter of minutes. No more second-guessing your gain staging or wrestling with masking issues.


Whether you're mixing demos or putting the finishing touches on your next release - Automix helps you move fast, without compromising on quality.

Mix up to 32 separate tracks of audio, and find the right sound for your track.

What is Multitrack Mixing, and why does it matter?

What is Multitrack Mixing, and why does it matter?

Multitrack mixing is the process of combining and balancing all the individual elements in a song - vocals, drums, guitars, keys, synths, and more - into a unified, professional-sounding track. It ensures your music:


  • Has clarity, depth, and space between instruments.

  • Feels dynamic, expressive, and emotionally engaging.

  • Translates well across speakers, headphones, and other listening environments.

Even if your recordings are good quality, multitrack mixing brings everything together by the adjusting of levels, EQ, panning, and effects to serve the song and highlight its best features.

Tonn API and SDK

Multitrack mixing and other tools via
API and offline SDK

Multitrack mixing and other tools via
API and offline SDK

Integrate our professional-grade mixing, mastering,

and audio analysis into your own platform or service.

How it works

Multitrack Mixing with Automix

Multitrack Mixing with Automix

AI multitrack mixing can provide quick and consistent results.

Intelligent Level Balancing

Volume levels are automatically adjusted with musical sensitivity, ensuring that each instrument finds its space in the mix. No more harsh peaks or buried vocals.

Dynamic Range Management

Automix intelligently smooths out overly compressed or uneven dynamics, preserving the natural energy of your track. Get punch and clarity without losing feel.

Frequency Conflict Reduction

Our engine identifies and resolves overlapping frequencies between instruments, helping your mix breathe. Find clarity for your track without over-EQing or muddying your mix.

Stereo Imaging & Spatial Depth

Subtle spatial processing adds width and depth, giving your mix dimension and focus. Achieve a spacious, balanced sound that translates well across different audio systems.

"I have to say after nearly 40 years mixing, recording and playing professionally, I am very impressed with your product.

Most engineers want to complicate a mix… when a clean simple mix with good levels and panning usually wins."
"I have to say after nearly 40 years mixing, recording and playing professionally, I am very impressed with your product.

Most engineers want to complicate a mix… when a clean simple mix with good levels and panning usually wins."

Steve Callahan, NC, USA

Retired Studio Engineer

We don’t train on your music. Ever.

We don’t train on your music. Ever.

Your music is yours, and we treat it that way. The ownership of your music remains unchanged when you use Automix or Mix Check Studio.


We never use your tracks for model training or future AI refinement.