One master · No subscription

One master, pay once. The credit never expires.

For the single release. Hear your track mastered in ZERRRO Engine for free, compare it with your mix at matched loudness, and spend the credit only when you download.

€2,99one master
Buy one credit →Try it free first
✓Full preview free✓Render again — free✓24-bit WAV + MP3✓No subscription
ZERRRO Engine master preview: waveform, measured loudness and true peak, A/B against the original mix
Master preview with loudness-matched A/B
€2.99one master

One credit, one download: 24-bit WAV and MP3 of the master you heard.

∞never expires

Buy it today, use it next year. Credits you buy are yours until you spend them.

∞re-renders before you pay

Change the character or loudness and render again as often as you like before the credit counts.

What you get

Everything the engine does, nothing held back.

Included in 1 Mastering Credit

€2,99
Pay once. No subscription, no renewal.
  • Full-length preview before you pay
  • All genres and subgenre profiles
  • Club or streaming loudness
  • Render again free, as often as you like, before the credit counts
  • 24-bit WAV + 320 kbps MP3
  • Files kept in My Masters for 12 months
Buy one credit →Compare all plans →

How a master happens

Hear it before you pay
The same flow for every plan
  • Drop a premaster. Format, true peak, clipping and loudness are checked in seconds.
  • Pick a genre profile and a character. The master plays while you shape it.
  • A/B against your mix at matched loudness, read LUFS and true peak.
  • Download only when you are happy. That is when a master counts.
Open the tool → How to export a premaster →
Draggable EQ dots, wishes in plain words, character and loudness target in ZERRRO Engine
Shape it while it plays

Not a black box. A mastering chain you can hear.

Genre reference profiles built from released electronic music, a character setting, draggable EQ dots and a loudness target for club or streaming. Every change is audible the moment you make it, and nothing is final until you download.

Plans

Pick the shape that fits how often you release.

Starter · first month free€4.90 / month3 masters a month, €1.63 eachSee Starter → Studio · most popular€9.90 / month10 masters a month, €0.99 eachSee Studio → Unlimited€19.90 / monthNo monthly limitSee Unlimited →

Just one release? A single credit is €2.99 and never expires →

FAQ

Before you decide

Is the preview really free?

Yes. You hear the full master, compare it with your mix at matched loudness and read the measurements without an account or a card. The credit is only spent when you download the files.

Does the credit expire?

No. Credits you buy stay on your account until you spend them, regardless of subscriptions.

Do I need an account?

Only to buy and download. The credit and the finished files are tied to your ZERRRO account so they stay in My Masters for 12 months. Previewing needs none.

Is a plan cheaper?

From two masters a month, yes: Starter is €4.90 for three masters and the first month is free, Studio is €9.90 for ten. Compare plans.

Which formats do I get?

24-bit WAV and 320 kbps MP3 of the master you heard, at your chosen loudness target. True peak never goes above 0 dBTP, and streaming masters stop at −1 dBTP. Download right away and by email.

Is VAT included?

Prices are in EUR. No VAT is shown (small business, § 19 UStG).

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