An eMastered alternative where you shape the master while it plays.
eMastered is a well-known AI mastering service. If you want more say in the result, ZERRRO Engine plays the master while you change genre, character, EQ and loudness, compares it with your mix, and charges per track.
Full length, no watermark, measured LUFS and true peak, A/B against your own mix.
No subscription needed. Credits never expire. Plans from €4.90 a month.
Genre, character, EQ and loudness change while the track plays.
The facts, on our side of the table.
| ZERRRO Engine | |
|---|---|
| Full master before paying | Yes, full length, no watermark |
| Adjust the sound while it plays | Genre, character, EQ dots, loudness |
| Account needed to try it | No, only to download |
| Single master without subscription | 2.99 EUR, credit never expires |
| Re-render if it is not right | Free, as often as you like |
| Genre profiles | Electronic music focus, 12 genres, 59 subgenres |
ZERRRO Engine fits if
- You make electronic music and want genre-specific targets
- You want to hear the full master before paying
- You want to adjust it while it plays, not re-upload
- You release a few tracks and prefer paying per track
The other service fits if
You prefer a one-click result and do not want to adjust anything, or you already have an eMastered plan that fits how often you release.
Hear it. Shape it. Then decide.
Upload & check
Bit depth, sample rate, true peak, clipping and loudness of your premaster are measured in seconds. If the file is already limited or clipping, you find out before anything is processed.
Pick your genre
Reference profiles for electronic music, adapted to your mix. Or upload your own reference track.
Shape it while it plays
Pick a character, drag the EQ dots or type a wish in plain words. Every change is audible while the track plays.
A/B and decide
Compare the master with your mix at matched loudness, read the measured LUFS and true peak, and render again for free if it is not there yet. You pay only when you download.
Questions producers ask
Is ZERRRO Engine an eMastered alternative?
Yes, for AI mastering of a finished stereo mix. The difference is control: you shape the master while it plays and hear the full result before you pay.
How does the price compare?
A single master is 2.99 EUR and plans start at 4.90 EUR a month. Check eMastered’s current pricing on their own site, prices change.
Can I use a reference track?
Yes. Upload a reference and the target follows its tonal balance, or pick a genre profile.
Do I need an account to try it?
No. The preview needs no account and no card.
Hear your track mastered first. Decide after.
Drop a premaster or take one of the demo tracks for a spin. Free, right now, in your browser.
Master a track free → No signup to preview · no card · no install