Mastering

AI Mastering

Upload a mix, get a first master in about a minute, then steer it with plain-language prompts, six AI engineers and a revision suite. Compare and finalize.

Works on

Updated Sep 3, 2026

The SoundBoost mastering workspace right after upload: Revision Suite on the left, prompt bar and waveform in the middle, track info and Custom EQ on the right — The mastering workspace right after upload. Your first master, called the Default Revision, is already playable.

#What mastering does here

Mastering is the last step before release: the mix gets balanced, glued, brought up to a competitive level and made safe for every speaker. SoundBoost does this with real mastering tools (analog-style colour, compression, resonance control, a true-peak limiter) that adapt to your track. It listens first: your song is analysed for loudness and genre, and the treatment is chosen before anything is touched.

The part people like most is that you do not have to speak engineer. You can type "warmer, less harsh, keep the dynamics" and the AI engineer takes it from there. If you do speak engineer, the Revision Suite on the left gives you the controls too.

#The whole flow in five steps

Upload a track
Drop a WAV, MP3, FLAC or another audio file, name the project and pick the 30 seconds you care about most. Details.
Listen to the Default Revision
About a minute later your first master is ready. Flip Mastering ON / OFF to hear it against the original at the same spot in the song.
Ask for changes
Write a prompt, name a reference track, switch engineer, or turn the knobs in the Revision Suite. Every change becomes a new revision.
A/B and pick a winner
Click between revisions while the track keeps playing. Star the one you love. How A/B works.
Finalize and download
Finalize renders the full track at full quality. Download WAV or MP3 from Projects. Finalizing.

A prompt goes in, a revision comes out. The engineer explains what it changed.

#Previews first, full render at the end

Every revision is rendered on the 30-second section you chose at upload, so trying ideas is fast and free. When you finalize, the same settings are applied to the whole song at full quality. Plus members can also render a full-length preview of any revision before finalizing.

#Where to start

Start herePrompt to MasteringThe fastest way to get the sound you hear in your head. Includes prompt examples that work.Sound designRevision SuiteAll eleven controls, what each one does to the audio and when to reach for it.WorkflowRevisions and A/B testingCompare, star, keep the best. Keyboard shortcuts included.Ship itFinalize and downloadWhat finalize renders, which formats you get, and what it costs on each plan.

#Web, iOS and Android

Mastering lives in the web app at mastering.soundboost.ai and in the SoundBoost app for iOS and Android. Prompts, engineers, intensity, the Revision Suite, Custom EQ, A/B and finalize all work on mobile. A few power features (bulk mastering, seeds at upload, voice mode, share session, the engine picker) are web only for now. Each page in this section shows its own compatibility line.

Do I need to know mastering to use this?

No. Upload, listen, and type what you want in plain words. The engineer picks the settings and tells you what it did. The knobs are there when you want them.

Is my track uploaded and stored?

Yes. Your original and every render are stored in your project so you can come back, compare and finalize later. You can delete a project any time from Projects.

Does it change the loudness to a fixed LUFS?

No. There is no forced loudness target. The level comes from your genre, the Loudness option and Intensity, with a true-peak limiter keeping the peaks safe. Use the True Peak option if a platform wants more headroom.

What does a revision cost?

Nothing. Previews and revisions are free on every plan, with a per-project revision limit on non-Plus plans. Finalizing and downloading the full master is part of Unlimited and Unlimited Plus. See Plans and limits.

#All Mastering pages

Uploading a trackSupported formats and limits, the SoundCloud import, naming your project, and why you get asked for your favourite 30 seconds.Prompt to MasteringType what you want in plain language; an AI mastering engineer renders a new revision and tells you what changed. How it works, and prompts that land.Voice ModeSay what you want changed instead of typing it. The engineer hears you, renders the revision, and answers out loud in its own voice.AI Mastering EngineersSix engineers, six personalities. Who they are, what each one changes in the sound, and how to pick one for your track.Reference masteringName a track or artist you want to sound like. The engineer treats it as a brief, picks settings in that direction and renders a revision.IntensityOne fader for how hard the master is pushed. What the number really controls, why 70 is the neutral point, and when to move it.Revision SuiteThe eleven controls on the left of the workspace, in order. What each option does to the sound, which one is the default, and when it is worth changing.Custom EQSix bands of final tone shaping, applied at the very end of the master. When to use it, when not to, and the fader tricks that save time.Revisions and A/B testingEvery change is a new revision and nothing is lost; switching keeps the song playing. How the A/B list works, how to star a favourite, and the shortcuts.Finalize and downloadFinalize renders the whole song with the selected revision at full quality. What you get, in which formats, what each plan includes, and the Projects menu.Mastering seedA short code that stores a complete mastering recipe: engineer, intensity, every option and the EQ curve. Copy it from one track, paste it on the next.Bulk masteringMaster up to ten tracks in one go with a shared prompt or seed, download everything as a zip, then open any of them for revisions. A Plus feature.GenresYour track is listened to and tagged with a genre before mastering starts, and the mastering is tuned to it. Here is what it means and how to change it.Share a sessionTurn on a public link and let a bandmate, client or producer listen to every revision and A/B them, without giving them access to your account.Engine versionsTwo mastering engines. What changed in v4, why v3.6 is still there, and how to switch.Plans and limitsWhat free, Unlimited and Unlimited Plus accounts get in mastering, in one table. Prices live on the pricing page; this page is about what the buttons do.

MasteringPrompt to MasteringType what you want in plain language; an AI mastering engineer renders a new revision and tells you what changed. How it works, and prompts that land.MasteringRevision SuiteThe eleven controls on the left of the workspace, in order. What each option does to the sound, which one is the default, and when it is worth changing.MasteringFinalize and downloadFinalize renders the whole song with the selected revision at full quality. What you get, in which formats, what each plan includes, and the Projects menu.

Ready to hear it on your track?

Upload a mix, get the first master in about a minute, and keep the revisions you like.

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