Mack Crown Mastering

Upload Your Song. Hear a Free 30-Second Mack Crown Master.

No account. No credit card. Hear your original beside a professionally mastered preview before you buy anything.

Free original vs master A/B30 seconds · Measured proof · No paid plan required

Upload My Song Free

Crown Engine Intake™Waiting

Current SessionWaiting For Source

The Crown Engine is ready.

WAVAIFFFLACMP3

Browse Audio

UploadAnalyze30s PreviewFull Master

20,000+Creative Prompts

13Artist DNA Trait Categories

Effectively LimitlessCustom DNA Combinations

30 SECFree Mastering Preview

One Creative Ecosystem

Create. Define. Crown.

Three connected stages move the record from creative direction to reusable identity to release-ready mastering.

01CREATE

Prompt Vault

Use 20,000+ structured creative directions to make repeatable music decisions—not random prompts.

02DEFINE

Artist DNA

Combine 13 modular trait categories into a reusable sound identity.

03CROWN

Crown Engine

Upload the finished mix, hear a free 30-second Crown proof, then unlock the full master.

Create It. Define It. Crown It.

Artist DNA System

Build Your Sound Identity.

Take the traits you love. Combine them across 13 modular trait categories. Build a sound identity you can reuse.

13 Trait CategoriesEffectively Limitless Combinations

THE SHAPE OF YOUR SOUND

Many influences. One reusable sound identity.

Cross genres. Combine individual traits.

You don’t have to choose one genre.

ONE POSSIBLE COMBINATION

TrapRhythmic pocket

OperaVocal drama

PopHook instinct

CountryStorytelling

Your 13-trait formulaOne creative direction. Countless ways to combine it.

Choose specific vocal, rhythmic, emotional, and production traits—not just genre labels. Save your formula, reuse it across songs, and evolve it as your sound grows.

Build My Artist DNA

Crown A/B Workstation

Hear The Master Change In Real Time.

Hear the original, Crown Master, or both in Overlay. Switch without losing your place, scrub the waveform, and decide from the record itself.

Live FFTAdaptive Master SpectrumReady

0:00 / 0:00

Hold Space or Hold A/B to hear Original instantly. Release to return to Adaptive Master with no restart.

Measured Proof

Mack Impact Report

TrackMercy Keeps CallingAnalysis Complete

Reference ComparedSource Mix vs. Mack Crown Adaptive Master

Vocal PresenceImproved

Presence rises without hardening the choir or lead vocal.

Result: Excellent

Dynamic IntegrityPreserved

A 12.81 dB peak-to-loudness reserve keeps the performance open and musical.

Result: Preserved

Stereo ImageExpanded

Width increases while the vocal and low end remain centered.

Result: Excellent

TranslationStreaming Ready

The -14.15 LUFS master retains safe true-peak headroom.

Result: Ready

Crown Engine Observations

Vocal presence improved

Choir depth preserved

Stereo field opened safely

No clipping detected

Master Your Track

20,000+ Structured Creative Directions

A Creative-Direction Engine For Repeatable Music.

Use structured musical directions, Artist DNA, and creative purpose to build a repeatable workflow across genres, arrangements, production styles, and more.

Explore Prompt Vault Master Your Track

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