Free AI mastering, no sign up
Upload a finished mix and hear it mastered in about a minute, with no sign up. The preview, the controls and the comparison with your original are free and need no account. You only pay when you want to download the full track.
Free online mastering in three steps
1 Upload your mix
Drop in the final stereo mix as WAV, MP3, FLAC, AIFF, M4A or OGG. No account is needed to start.
2 Hear a free preview
In about a minute you hear a 30-second section mastered. Switch between original and mastered at the same spot and judge the difference yourself.
3 Adjust, then decide
Change the loudness, tone and EQ with the controls until it sounds right. A free account adds 10 more revisions per track. Download the full track only if you want it.
Every plan accepts WAV, MP3, FLAC, AIFF, M4A or OGG files up to 1.5 GB and 22:30 long.
What is free and what costs money
Free means free to listen and adjust. It does not include a download.
| Feature | Free | Unlimited | Unlimited Plus |
|---|---|---|---|
| Mastered preview | 30 seconds | 30 seconds | Full length |
| Account needed | Not for the preview | Free account | Free account |
| Controls, engineers and EQ | Included | Included | Included |
| Extra revisions per track | 10 with a free account | 20 | Unlimited |
| Full-track download | Not included | Included | Included |
| Download formats | Not included | WAV 24-bit and MP3 320 | WAV 24-bit and MP3 320 |
| Price | $0 | $14/month, or $43/year | $22/month, or $65/year |
Prompt mastering and reference mastering are part of paid plans. Plans are listed in full on the pricing page.
Why AI mastering, honestly
Mastering is the final polish on a finished mix: balanced tone, consistent loudness and a sound that holds up on earbuds, in a car and on a playlist. Doing that well by hand is skilled, and it costs money per track.
AI mastering makes that step fast and cheap enough to try on every bounce. It suits demos, singles, reference versions and independent releases where you want a competitive, consistent result without waiting days.
It has limits. It cannot repair a muddy or clipped mix, and it does not know what you intend. If your song is part of an album, a commercial release with a big budget or something unusual, a human engineer is still a good choice. If the mix is the problem, fix the mix first.
That is why the free preview matters: you do not have to trust a claim. Listen to your own song, compare it with the original, and decide.
Free tools and guides
These run in your browser, free and without an account.
- LUFS meter: Measure the loudness of any bounce.
- Loudness penalty checker: See how much each streaming service turns you down.
- Master my song: The upload, listen and download flow in three steps.
- Master Suno songs: What mastering can and cannot fix in AI audio.
- What is music mastering?
- What is the difference between mixing and mastering?
- How loud should I master for streaming?
Free mastering questions
Listening is free. You can upload a track, hear a 30-second mastered preview without an account, and adjust it with all the controls. Downloading the full mastered track needs Unlimited or Unlimited Plus.
No, not for the preview. A free account adds 10 extra revisions per track so you can keep refining. It still does not include downloads.
It is long enough to judge loudness, tone and balance on the part of the song you choose, and short enough to render in about a minute.
Unlimited is $14 a month or $43 a year. Unlimited Plus is $22 a month or $65 a year. You can cancel anytime from Billing.
WAV, MP3, FLAC, AIFF, M4A and OGG. Paid plans download WAV 24-bit and MP3 320.
For many independent releases it gets you most of the way, quickly. It is not a substitute for a good mix, and for high-stakes projects a human engineer is still worth considering.
Try it on your own track
No account needed. Download only if you like what you hear.