In your browser.
In minutes.
ZERRRO Engine references your exact genre, listens to your mix, and delivers a club-ready master. Hear it previewed free — pay only when you download.
in six guided steps.
No plugins, no manual gain-staging. ZERRRO Engine walks you through every decision — and does the heavy lifting.
Format, headroom, clipping and loudness checked in seconds. Pick your 30-second preview region.
8 genres, 50+ subgenre profiles. A slider controls how firmly the genre reference shapes your sound.
Club, Streaming or Vinyl — or dial in fully custom loudness and true-peak targets.
Soft, Balanced, Aggressive, Warm or Punchy — the overall attitude of your master.
Optionally match the sound of up to three of your own reference tracks, each weighted.
“Clean bass, sparkling highs, vocal up front” — the AI turns your words into real decisions.
before you pay.
ZERRRO Engine is brand new and improving every week. It’s already producing great masters — but it’s not perfect yet, and you might hit the occasional rough edge. That’s exactly why your ears matter: if you try it, we’d love to hear what worked, what didn’t, and what you’d want next.
deserves a real master.
Upload a track and hear it mastered — free.
Try ZERRRO Engine for free →