Online mastering that sounds released.
Free preview, no signup. Drop in a mix and hear it mastered in about a minute, shape it with simple controls or a sentence, and pay only when you download the full track.
Ready for every platform
Every master stays under a true-peak ceiling you choose and downloads as 24-bit WAV or MP3, ready for your distributor or a direct upload.
Hear the difference
Pick a track and press play. Switch between the original mix and the master while it plays.
Example tracks: our own instrumentals, five of them with licensed vocals. All mastered by us.
Use the left and right arrow keys to change track, Enter to play or pause.
Lost
Ambient popMKX 001
Lost, Ambient pop, 1 of 6
OriginalMastered outline
- Loudness
- −24.9 LUFS
- True peak
- −12.5 dBTP
Lost, Original: −24.9 LUFS, true peak −12.5 dBTP
30-second excerpt. Same mix before and after our default master, measured from the files you hear.
Vocals: “Lost (pella)” by Queenie, “Persephone” by Madam Snowflake, “Used Me Vocals” by The Spin Wires, “With Love Rap” by donnieozone and “Sueños perdidos” by SanchezBand, from ccMixter under CC BY 3.0 and CC BY 2.5. Instrumentals by MasteringKit; mixed and mastered by MasteringKit.
What musicians say
Independent artists and producers on what they heard. Open a card to find their music.
I dropped a beat in without making an account and heard it mastered about a minute later. Then I typed ‘warmer, less bite on the hats’ and got a new version with the changes listed in numbers.
Kayou.Lo-fi hip hop producerSpotify on 99.7K monthly listeners(opens in a new tab) Every change lands as a new version, so I switched between two while the chorus was playing and heard straight away which one sat my vocal better.
Mia MorrisAlt-pop singer-songwriterYouTube on 144K subscribers(opens in a new tab) I use the free preview to hear a rough master before I commit. Mastered in about a minute, no account, and I can adjust it with a few controls.
Taly ShumMelodic techno DJ and producerApple Music on 38.1K Spotify monthly listeners(opens in a new tab) Quiet, wide music is easy to flatten with a heavy master. I pulled the intensity down and kept comparing against my mix until it still breathed.
The AmbientalistAmbient composerSpotify on 68.2K monthly listeners(opens in a new tab) Six engineer styles on the same beat gave me six starting points. I kept the one that fit and nudged it from there.
Purrple CatLo-fi producerYouTube on 192K subscribers(opens in a new tab) I asked for ‘a bit more air up top’ in plain words and got a new version back, saved next to the old one so I could switch between them while the track played.
bad snacksChill lo-fi producerYouTube on 131K subscribers(opens in a new tab) I write and produce my own songs, so being able to adjust the master myself with a few simple controls, instead of sending notes back and forth, is the whole point.
Izzie NaylorIndie alt-pop artist and producerYouTube on 62.2K subscribers(opens in a new tab) Previewing and tweaking cost me nothing. I only paid when I wanted the full-length WAV.
VerysickbeatsBoom bap beatmakerYouTube on 111K subscribers(opens in a new tab)
How online mastering works
AI mastering for finished mixes. You stay in charge of every decision and only pay when you download.
Upload your mix
Drop a WAV, FLAC or MP3 of the final stereo mix. Pick the part of the song you most want to hear.
Hear a free preview
No signup. In about a minute you hear a 30-second section mastered, ready to compare with your original.
Adjust and download
Change it with controls or a sentence until it’s right, then download the full track as WAV or MP3.
Say what you want to hear
Write a note the way you would to a mastering engineer. Avery makes a new version and tells you what changed, in numbers you can check.
Works in any language. Every reply comes with a version you can compare against the last one.
Tell Avery what you want to change, in your own words.
Versions
Fine-tune your master with real controls
Eleven controls, an intensity setting and a six-band EQ. Each change renders a new version in seconds.
- Loudness
- Balanced
- Ceiling
- -0.1 dB
- Stereo width
- Natural
- Mono safety
- Off
- Space
- Off
- Saturation
- Light
- Warmth
- Neutral
- Clarity
- Neutral
- Tape
- Off
- De-esser
- Normal
- Compression
- Normal
Loudness
−15.3 LUFS
True peak
−0.1 dBTP
Streaming services turn tracks louder than about −14 LUFS down, so louder isn’t always better.
Choose who masters your song
Six engineer styles, each a different starting point. Try them on the same track and keep the one that fits.
Avery
Balanced
Clean, honest masters that keep your mix the way you made it.
Tonal tendency, drawn for comparison. Every master is still tuned to your mix.
Pick a version. The position stays put.
Every change is a new version
Nothing gets overwritten. Each control change or sentence adds a version to the list, and you can switch between them while the track plays to hear the difference at the same spot.
Free projects include 10 extra revisions after the first master.
Free mastering preview. Pay to download.
Upload, preview and adjust without paying. A plan unlocks full-track downloads. Compare every plan feature
Free
$0
Free preview, no signup
- 30-second mastered previews
- 10 extra revisions per project with a free account
- No full-track download
Unlimited
$3.58/month
Billed $43 once a year
- Unlimited full-track exports
- WAV 24-bit and MP3 320
- 20 revisions per track
- All controls, engineers and EQ
Unlimited Plus
$5.42/month
Billed $65 once a year
- Everything in Unlimited
- Unlimited revisions
- Full-length previews
- Batch mastering, up to 10 tracks
Mastering questions
Something else? Read the help center, the mastering guides or contact us.
Mastering is the last step before release. It balances the tone, controls dynamics, sets the stereo image and brings the track up to a competitive loudness, so it sounds right on earbuds, car speakers and club systems. MasteringKit is online mastering: it listens to your finished mix and applies EQ, compression, saturation, stereo processing and limiting for you.
WAV, MP3, FLAC, AIFF, M4A or OGG, up to 1.5 GB and 22:30 long. Upload the final stereo mix with a little headroom and no limiter on the master bus if you can. Paid plans export WAV (24-bit) and MP3 (320 kbps).
Your first 30-second preview is usually ready in about a minute. Each change after that takes a few seconds. When you finalize, the full-length master is ready to download a minute or two later.
Your uploads and masters are private to your project and are only used to master your track. You can delete a project at any time, and files from inactive projects are removed automatically. The privacy policy has the details.
Yes. Download the WAV and send it to your distributor as you normally would. Streaming services turn loud tracks down to a common level, so the Balanced loudness setting is a safe choice for streaming. Louder settings are there for club and DJ use.
Both include unlimited full-track exports and every control, engineer and EQ band. Unlimited Plus adds unlimited revisions, full-length previews, batch mastering, up to 10 tracks and priority render queue. Unlimited is $14 a month or $3.58 a month billed yearly; Unlimited Plus is $22 or $5.42.
Yes. Export the song from the generator as WAV if you can and upload it like any other mix. Generated tracks are often dull or quiet, which mastering helps with. Before you release it, check that the generator’s terms let you use the song commercially.
Yes. The preview is free and needs no signup: upload a track and hear a 30-second section mastered. A free account adds 10 more revisions per project. Downloading the full track needs a paid plan.