It sounds smaller than the song before it
Suno delivers around −15 LUFS; commercial releases sit near −9. In a playlist yours comes on quieter and further away. Nobody thinks “this needs mastering” — they just skip.
AI mastering for Suno, Udio and every AI-generated track
Your AI track, finished.
Suno and Udio give you a song. We give it weight, air, and a level that holds up next to commercial releases — and we tell you exactly what we changed.
Master a track freeNo signup. Hear the loudest 60 seconds against your original before you pay.
Built by a producer behind Marvel game music and K-pop / J-pop records.
- 60 s
- per track
- 83
- commercial masters measured
- $0
- to hear the result
Hear it before you upload anything
30s
Off is the real difference. On removes the volume gain so you hear only the tone.
All tracks generated with Suno by our founder and mastered with the same engine you get on this page. No hand-tuning.
Three steps. No account, no plugins, no manual.
- 01
Drop your file
WAV, MP3, FLAC — whatever Suno or Udio gave you. Up to 350 MB.
- 02
Listen to the before and after
About a minute later you get a 60-second A/B of the loudest part, and a plain-language report of what changed.
- 03
Download when you like it
24-bit WAV, ready for Spotify, YouTube, TikTok or DistroKid. 14-day refund, no questions.
Before you upload it anywhere, there is one step left.
Mastering is the final pass that makes a song hold up outside your headphones — the same size as everything else in a playlist, and the same balance on a phone, in a car, or on real speakers. AI tools skip it. We measured 20 Suno tracks against 83 commercial releases to find exactly what is missing.
It gets tiring after a minute
AI tracks run 4–5 dB hot between 6 and 20 kHz. For thirty seconds that reads as detail. After that it is fatigue on earbuds, and people stop before the song ends.
It falls apart on small speakers
The low-mids carrying the kick and the body of a vocal are 1.6 dB thin. On a laptop or phone that range is most of what you hear, so the track goes hollow exactly where it matters.
What we measured — 20 Suno tracks vs 83 commercial masters
| Band | AI tracks | Commercial | Gap |
|---|---|---|---|
| lowmid | -8.26 dB | -6.68 dB | -1.6 dB |
| highmid | -9.25 dB | -12.27 dB | +3.0 dB |
| high | -13.67 dB | -18.10 dB | +4.4 dB |
| air | -21.54 dB | -26.58 dB | +5.0 dB |
What actually happens to your file
Not a preset. Every track is measured, then a chain is written for that track, rendered, and re-measured until it lands.
- 1
Measured
LUFS, true peak, PLR, seven spectral bands, stereo width, high-frequency limit. Takes 1–5 seconds.
- 2
Decided
An AI mastering engineer reads those numbers against curves measured from real commercial masters, then writes the chain.
- 3
Rendered
EQ, saturation, multiband compression, stereo, true-peak limiting. Every stage explained in your report.
- 4
Verified
The result is re-measured. If it misses the target the chain is redesigned, up to three times.
Built like a studio tool, priced like an app
- Reference curves from real records
- 83 commercial masters measured band by band. Your track is judged against what actually gets released, not a guess.
- Nothing is hidden
- Every master comes with an engineer's note: which frequencies moved, by how much, and why.
- True peak verified
- Ceiling checked at 32× oversampling so streaming encoders never clip your track.
- Your files stay yours
- We claim no rights to your audio. Delete anything, any time, from your tracks page.
Pricing
Hear 60 seconds of your own master before you pay. On every plan.
Free
$0
60-second preview of every master, plus the report. Download locked.
Single
$5.99per track
One track, 24-bit WAV, yours to keep.
Most popular
Creator
$12.99per month
20 tracks a month. Revision requests included.
7 days free · 3 tracks during the trial
Pro
$21.99per month
Unlimited tracks, 96 kHz, priority queue.
7 days free · 3 tracks during the trial
Subscriptions start with a 7-day free trial (3 tracks). A card is required; nothing is charged if you cancel before day 7. One trial per account.
Fair use: 20 tracks a day, 300 a month. Tracks up to 15 minutes.
Why here and not somewhere else
| MasteringOne | Other AI mastering services | |
|---|---|---|
| Tell it what you want, in your own words | ● | — |
| Explains what it changed and why | ● | — |
| Targets tuned on AI-generated music | ● | — |
| Preview before paying | 60s, loudest part | Yes |
| Price | $5.99~21.99 | $13~50/mo |
Based on our own survey of comparable services, August 2026. Their features may have changed since.
Questions people ask before their first track
Is it really free to try?
Yes. Upload a track and hear the loudest 60 seconds of the master against the same section of the original, plus the full report of what changed. You only pay if you want to download the full WAV.
I made the song in Suno / Udio. Am I allowed to master and release it?
That depends on your Suno or Udio plan — paid plans generally grant commercial rights to the tracks you generate. Check their terms. Mastering does not change who owns the song.
Do I need to know anything about mastering?
No. The default settings are tuned for AI-generated tracks. Drop the file and press one button. If you do want control, you can pick a style, a release platform, or type what you want in plain words.
What file should I upload?
The highest quality you have. From Suno, download the WAV rather than the MP3. If you only have an MP3 that is fine — we detect what the codec removed and work within it.
How loud will it be?
By default we target −10 LUFS, which is where commercial releases sit. Choose Spotify, YouTube or Apple Music as the release target and we match their normalization instead, so the platform does not turn your track down.
Can I ask for changes?
Yes. Type things like “vocals more forward” or “less harsh on top” before mastering and the engine designs the chain around it. Revision after the fact is on Creator and Pro plans.
What about refunds?
Any purchase can be refunded within 14 days, no reason needed, even if you already downloaded the file. Payments are handled by Paddle.
Can mastering fix a bad mix?
No, and we will not pretend it can. Mastering works on the whole track at once. If the vocal is buried under the drums in the file, it will still be buried after mastering — we will tell you that in the diagnosis before you pay anything.
Guides
Short, practical reads for people releasing AI-generated music. Written by a working engineer, measured with real files.
Free online mastering: what you actually get, and what is worth paying for
How free online mastering works in 2026, what a free preview can and cannot tell you, and how to hear 60 seconds of your own master — the loudest part — before paying anything.
6 min read
How to master Suno songs so they sound like a real release
A step-by-step guide to mastering Suno tracks: which file to download, what is actually wrong with Suno's output (measured), and how to fix it in about a minute.
7 min read
Mastering Udio tracks: getting from 'sounds good in the app' to release-ready
What to check before mastering a Udio track, which export to use, and how to bring it to commercial loudness without losing what made it sound good.
5 min read