--- title: "What AI mixing can and can't do | Mixroadie" description: "The three kinds of AI mixing tools, what a computer can measure in a mix and what it can only guess, and what to check before you try one." url: "https://mixroadie.com/blog/what-is-ai-mixing/" published: "2026-10-05T00:00:00.000Z" --- # What AI mixing can and can't do The three kinds of AI mixing tools, what a computer can measure in a mix and what it can only guess, and what to check before you try one. GUIDE 5 October 2026 4 min read Search for “AI mixing” and you get mastering websites, EQ plugins, stem mixers and chat assistants, all under the same two words. They do very different jobs. Most of the complaints we read on forums (“it made my song louder and worse”, “it didn’t touch the vocal”) come from someone who bought one kind of tool while expecting another. So before comparing products, it helps to sort them. ## Three things people call AI mixing **Mastering a stereo file.** LANDR, eMastered and BandLab Mastering take a finished mix, one WAV, and return a louder, tonally balanced version. This is the oldest and most common kind. It can’t change the balance between instruments, because by the time the file exists the vocal and the guitars are printed together. If the vocal is buried, a mastering service makes a louder song with a buried vocal. **Plugins that set up one track.** iZotope Neutron’s assistant and sonible’s smart:EQ and smart:comp listen to the audio on the track they sit on and propose settings. They work in almost every DAW and can be very good at what they do. What they can’t see is the rest of the song. A smart EQ on the guitar doesn’t know there is a singer at 2 kHz who needs that space. **Tools that work on the whole multitrack.** This group is newer. RoEx Automix and Cryo Mix take exported stems and return a mix. Phantom lets an AI assistant work inside your REAPER or Live session. Mixroadie, which we make, reads your REAPER project directly and proposes changes across every track at once. The third kind is the only one that can fix the problems people usually mean when they say their mix sounds amateur: a vocal that disappears in the chorus, a kick and bass that blur into one low thud, two guitar mics that cancel each other out. We compared the main products one by one in [Mixroadie vs. the alternatives](https://mixroadie.com/blog/mixroadie-vs-alternatives/). ## What a computer can measure, and what it can only guess A lot of mixing is measurement. A rumble below the lowest note a track plays is there or it isn’t. A resonance that stays at 340 Hz while the singer moves between notes can be found and sized. Esses can be detected, and so can a snare bottom mic with its polarity flipped and a master that clips at 0.3 dBFS. A tool should catch all of these every time, and should be able to tell you the number it found. Some decisions sit in between. How loud should the lead vocal be against the band? There is no single right answer, but there is a range. We measured it in finished mixes: in rock, pop and metal the band sits about 6.5 LU above the lead vocal; in electronic music, about 4.7 LU. A tool can check whether your mix is inside the range engineers use and move a track only when it’s outside. And then there’s taste. Should the snare have a plate reverb? Should the drums get parallel compression? How much saturation does the bass want? No measurement settles those. A tool that applies them anyway is guessing for you. Mixroadie handles this split by marking it. Measured fixes come back ticked. Taste moves like parallel drum compression and saturation come back unticked, labelled optional, so you decide. Moves on a track whose instrument it could only guess from the name start unticked as well. You can see in the plan which moves are which. ## “AI mixing plugin”: does the format matter? People search for an AI mixing _plugin_ because plugins are what they know how to install. The format is less important than the question underneath it: does the tool hear the whole song, or one track? Mixroadie isn’t a plugin at all. It runs next to the DAW, reads the project, and writes its changes using the DAW’s own stock EQ, compressor and limiter. When it’s done, everything it did is an ordinary ReaEQ or ReaComp on your tracks that you can open, change or delete. Nothing stays locked inside a black box, and you don’t need a plugin licence to open the session on another computer. ## What “AI mixing check” tools do Some tools don’t change anything. They listen to your bounce and report back: too much low-mid, vocal too quiet, master too loud for Spotify. That’s useful as a second opinion, especially at 2 a.m. when your ears have given up. Mixroadie has the same idea built in. **Check the whole mix** renders your mix and flags any frequency band sitting outside what released records do, and the recording health check finds clipped takes, files that were once MP3s, and pairs of tracks that cancel each other out. The difference is that you can then ask it to fix what it found. ## Before you try one Four questions sort out most of the options: - **Does it upload your audio?** For unreleased songs or client work, that may decide it. Mixroadie never uploads audio in any configuration. By default its AI runs offline too. - **Can you reject a single move?** If the tool returns one finished file, you can only accept or redo the whole thing. - **Does it work in your DAW?** Mixroadie works in REAPER only. If you mix in Logic or Ableton, it isn’t for you yet. - **Does it mix, master, or both?** If your mix has balance problems, a mastering service won’t solve them, however good its algorithm is. None of these tools replace a good mix engineer’s taste. What they can do is get the measurable problems out of the way, so the decisions left over are the ones that are actually yours.