In short
AI mastering makes your song louder and more balanced in seconds. That’s enough for demos and snippets. For a release it lacks what an engineer brings: hearing mistakes in the mix, knowing your goal and being able to ask.
How does AI mastering work?
You upload your mix, the software compares it with its training material and automatically applies EQ, compression and a limiter. Usually you pick a style and loudness first, and some services accept a reference track.
LANDR, BandLab, eMastered and Ozone
- LANDR: the best-known service. Preview masters are free, finished masters come with a subscription or per song. Prices change regularly, current ones are on the LANDR website.
- BandLab Mastering: free, with a few presets. Good for a quick impression.
- eMastered: similar to LANDR, with a subscription and reference track.
- iZotope Ozone: a plugin for your DAW. Master Assistant suggests a chain that you adjust yourself. That takes experience and good monitoring.
What AI mastering does well
- Fast and cheap: a louder song in minutes.
- Reliable on cleanly mixed songs in common genres.
- Good for demos and social media snippets.
Where AI hits its limits
Many presets squash the song hard. On Spotify it still gets turned down to −14 LUFS and then sounds flatter than it needs to.
- It doesn’t fix a mix. Harsh hi-hats or a dull vocal just get louder.
- It doesn’t know your goal. Warm and calm or aggressive and loud? The AI guesses from averages.
- No feedback. An engineer tells you when something is better changed in the mix.
- EPs and albums rarely sound like one piece.
Can you master songs from Suno or Udio?
Yes. AI generators like Suno deliver a finished stereo file, often already loud, with dull or metallic highs and a washed-out low end. Mastering balances the sound and sets the loudness for release. It can only partly remove artefacts from the generation, though. If you can export separate tracks, a proper mix usually does more.
When is which worth it?
| Situation | Recommendation |
|---|---|
| Demo, snippet, quick test | AI mastering is enough |
| Release on Spotify and co. | Engineer |
| You’re unsure about your mix | Mix review, then mastering |
| EP or album | Engineer |
| Song from Suno or Udio | Mastering, better a mix from stems |
Try it: compare your AI master in the free Mix-Scout with a reference track from your genre. If it sounds squashed or the numbers are way off, mastering by an engineer is worth it. With me it costs €35 per song.