Drop the mix.
Hear the master.

Hear the master at full level against your original, with its loudness measured on the 24-bit WAV you would download. Most tracks finish in 1–5.5 minutes. When previews are available, pay only for the download.

Hear a sample master

Upload

Drag a mix here

Master a track
  1. Pick how loud it should land
  2. A/B the full-level master against your original mix
  3. Download only if you want it

4 loudness choices default −9 LUFS / −0.1 dBTP WAV · AIFF · FLAC · MP3 in

From your mix to a master you can hear.

Most tracks finish in 1–5.5 minutes

  1. 01 · Upload

    Drag in a mix

    WAV, AIFF, FLAC or MP3

  2. 02 · Direct

    Pick how loud it should land

    Dynamic, Balanced, Full or Extra loud

  3. 03 · Compare

    Hear the full-level master against your mix

    Every measurement shown

  4. 04 · Decide

    Download only if you want it

    24-bit WAV, 16-bit WAV and MP3

Hear the actual loudness change.

Hear real personal mastering work: the mix and the master, each at its delivered level. The master plays the same file offered for download; both sides retain their delivered level. Try your own mix above for a full-level preview from the automatic mastering engine.

Hear the samples
0:00 / 0:00

Before

Loudness — True peak — Range —

After

Loudness — True peak — Range —

Loudness range measured with ffmpeg ebur128 (EBU Tech 3342); rights and source records are retained privately.

This audio example isn’t available right now. Master your own track

Pick the number

Choose how loud it feels.

  1. −14 LUFS Dynamic
  2. −11 LUFS Balanced
  3. −9 LUFS Full · default
  4. −8 LUFS Extra loud

All four loudness choices use a −0.1 dBTP ceiling. Lossy encodes can peak higher than the WAV. Louder targets use more limiting; listen for the balance you prefer.

Browse mastering tools What each platform publishes

How it decides

Five stages, in this order, every time — upload, then four the engine runs.

  1. Measure the mix

    Loudness, true peak, range, tilt and stereo width, on the file as it arrived.

  2. Match a finished record

    The tonal target is one curated master, the same for every mix.

  3. Render to the target

    The loudness you picked, under a −0.1 dBTP ceiling. If it cannot get there under the ceiling, it stops short and states the shortfall.

  4. Measure the file you get

    Every file is decoded and measured again before it is offered. The numbers on the page come from that check.

The five stages in detail Inside the chain

After the master

The tools.

Everything after the master. Carry the approved file into release preparation, make the cover and get the show ready, with the audio checks free for everyone.

Release

Plan the release

Keep dates, tracks, preparation drafts and tasks with the release. Your first release is free to plan; Unlimited adds every release and the exports. You stay in control of distribution and promotion.

Example release workspace with tasks and due dates

Artwork

Make the cover

Describe the scene, explore original artwork, then add your artist name and title. Account access is rolling out.

Example lighthouse album artwork

Audio checks

Check the loudness

Measure loudness, true peak and range, see how a platform may turn the track down, and compare two masters at matched level. Free, with no account.

Loudness penalty calculator reading a demo master against Spotify, SoundCloud and AES figures
See every tool

When the record needs a conversation

An engineer’s sound, tested and built to run on its own. And a person in every decision, when you want one.

Tuned by a working mastering engineer. The targets the engine matches were built and tuned by an engineer with more than 20 years of credits.

Illustration: one master’s tonal shape, over time.

One of the engineer’s own masters. The tonal target every mix is matched to comes from the engineer’s own catalogue.

Tested against human masters. The chain is scored against human masters it has never heard, on tonal tilt, crest, loudness and loudness range.

Personal mastering keeps a human in every decision. Work directly with a mastering engineer who listens to your music and makes the mastering decisions, without automation.

Explore personal mastering

  1. Tell us about your music Your track, EP or album, with listening links and references.

  2. Discuss the project Your goals and your mixes. Scope, pricing and timing, agreed directly.

  3. Arrange the work together The details and how to send your mixes, agreed before any work starts.

What it costs.

Unlimited is mastering plus the release planner and stage plot maker, with no higher tier to upgrade to. Every paid download is 24-bit WAV, 16-bit WAV and MP3.

UnlimitedBest value
$15 /mo

Costs less than per-track from your fourth master a month.

  • Unlimited masters, each one in 24-bit WAV, 16-bit WAV and MP3
  • Saved stage plots and input lists for live shows
  • The Release Planner for every release, with exports and file references
  • The AI album cover generator’s daily image allowance, when generation is available
  • $99 a year · cancel any time
Go unlimited
Per track
$4.99
  • 24-bit WAV, 16-bit WAV, MP3
  • Yours to keep
  • No subscription
Buy a master
Free
$0
  • Full-length preview
  • Every measurement
  • No card, and it does not expire
  • No download
Master a track

The same chain, on every track. Every file is measured again before it is offered.

Questions

Common questions.

Do I need an account?

Not to hear it. Drop a mix, pick a target, and the finished preview plays in full with both sets of numbers. An account is asked for when you want the file.

What does the preview cost?

Nothing. It is the full master at its mastered loudness against your original mix. Payment is for the download, per track or unlimited.

Does the preview play at the master’s full loudness?

Yes. The master and your original each play at their own level, so you hear the actual loudness change. The readings for each side are shown beside it.

What if the target cannot be reached?

It delivers what it reached without breaching the ceiling, and states the shortfall.

What formats?

WAV, AIFF, FLAC or MP3 in, mono or stereo, 44.1 to 96 kHz, up to 1 GB and 12 minutes (6 minutes above 48 kHz). 24-bit WAV, 16-bit WAV and MP3 320 out, on every paid level.

Can I change my mind?

Run it again at a different target. The preview is free every time, up to 20 masters a day on the free tier. On Unlimited the new master is included; per track, each master you download is its own purchase.

Personal mastering

Work with a real engineer.

Want to discuss your music and work directly with a mastering engineer? Personal mastering is a service without automation, arranged around your project.

Explore personal mastering

Hear it on a track you know.

Drag a mix here

Master a track

4 loudness choices · default −9 LUFS / −0.1 dBTP · free preview, pay for the download