Mastering

Revision Suite

The 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.

Updated Sep 3, 2026
The whole panel. Every option starts on Balanced, which means "let the engineer decide".

#How the panel works

Each control is a row of buttons. Balanced is always the default and always means "do what your genre calls for". Pick another value, change as many controls as you like, then press Save Changes at the bottom of the panel. That renders a new revision named "Revision n" with your settings; the previous revisions stay in the A/B list. Nothing is applied live, and Save Changes is disabled until something actually differs from the selected revision.

The panel and the prompt bar work as a pair. After a prompt, the panel adapts to the revision and reflects the direction the engineer took, so you can nudge from there by hand. It is the fastest way to learn what each option sounds like on your own music.

#The controls

Analog Warmth

Vintage tube and transformer character. Adds harmonic richness, most audible in the low mids and top end.

Balanced
Clean, no extra warmth.
Warm
Gentle thickening; the go-to for "nostalgic" and "warm".
Crunchy
More drive and a lift in the highs. Adds bite; works on rock and lo-fi.
Hot as Hell
Pushed hard. Obvious distortion character. Use on purpose, and pair with a heavy De Esser.

Saturation

Harmonic density. Makes things feel bigger and denser; too much makes them feel smaller and harsh.

Balanced
The default for your genre.
Color
Punch and glue. Electronic and rock love it, and the engineer reaches for it when you ask for "loud".
Heavy
Big and gritty. Do not stack with Hot as Hell or Aggressive loudness.
None
The calm, transparent choice.

Mastering Reverb

A very subtle room around the whole master, for depth and glue. Not a creative effect.

Balanced
Off, unless Sophia is your engineer (she likes it on).
On
A touch of space. Sparse, dry mixes love it, and it can surprise you on dense ones too.
Off
Forced off, including with Sophia.

Tone Clarity

Cleans up the low end. Removes mud without touching the balance.

Balanced
Off.
Clear
Cleans the low mids and tightens bass. The fix for "muddy", "boxy", "dirty low end".

Loudness

How hard the track is pushed, in fixed steps, with a character change at the top.

Balanced
The default for your genre.
Smoother
The gentlest setting. Calmer, more dynamic. Pair with a heavy De Esser for a smooth top.
Loud
A step louder. The sensible "louder" button.
Crunchy
Loud and grainy rather than simply louder.
Aggressive
Two steps louder. Maximum level; expect less punch and more density. Do not combine with Heavy saturation.

Stereo Width

The stereo image, adjusted relative to the genre default.

Balanced
The default for your genre.
Subtle
A little narrower. Tighter centre, safer in mono.
Wide
Noticeably wider. Bigger soundstage; check the low end still holds in mono.

Tape Effect

A tape-style EQ curve: soft top, rounded transients.

Balanced
Off.
Analog
Retro, softer highs, slightly more low-mid body.

Compressor Style

The dynamics behaviour. Also affects whether the De Esser can work.

Balanced
The default for your genre.
Compressed
A little more control and a touch less push. Think of it as a safety brake for when you also went Loud or Aggressive.
None
Takes the compressor out. More open dynamics, but the De Esser goes with it, so harshness can creep in.

Mono Compatibility

How the master behaves on a single speaker: phones, smart speakers, club systems.

Balanced
The default. Fine for almost everything.
Club Special
Wide and loud, made with big club systems in mind.
Mono
Collapses the image to mono. For mono venues and for checking that nothing disappears when summed.

De Esser

Dynamic control of harshness over the whole mix, not just vocals. Tames sibilance and the edge that comes with loudness.

Balanced
The default for your genre.
None
Off. Brighter and more raw; only if the mix is already smooth.
Heavy
Maximum depth. The standard partner for Loud, Aggressive, Hot as Hell or Heavy saturation.

True Peak

The peak ceiling. Streaming platforms encode your file, and encoding adds peaks; headroom stops that from clipping.

Balanced
About -0.3 dBTP. Safe for most uses.
0
-0.1 dBTP. Loudest possible; some encoders will clip a little.
-1
-1.1 dBTP. The usual streaming recommendation.
-2
-2.1 dBTP. Extra safe for lossy delivery and broadcast.

#Combinations that work

GoalSettings
Loud but politeLoudness: Loud · Saturation: Color (electronic or rock) · De Esser: Heavy · Compressor Style: Compressed
Warm and openAnalog Warmth: Warm · Compressor Style: None · Stereo Width: Wide · Intensity around 55
Clean and detailedSaturation: None · Tone Clarity: Clear · True Peak: -1 · engineer: Luna
Lo-fi characterAnalog Warmth: Crunchy · Tape Effect: Analog · De Esser: Heavy
Streaming safeTrue Peak: -1 · Loudness: Balanced · Mono Compatibility: Balanced
Are any options locked on the free plan?

No. Every control is available on every plan. Plans differ in revision count, finalizing and a few extras. See Plans and limits.

Why is Balanced not the same as Off?

Balanced hands the decision to the engineer, and for some genres a stage is on by default. Where an explicit Off exists (Mastering Reverb, Saturation: None, De Esser: None) it forces the stage out.

Where is EQ?

On the right side of the workspace, as a six-band Custom EQ. It is applied at the very end of the master.

Ready to hear it on your track?

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

Try it on your own track

The first master takes about a minute. Previews are free.

Open Mastering