MACK CROWN MASTERING ENGINECurrent SessionREADY
MASTER ENGINE READY

Drop Audio

Waiting for Source

WAV / AIFF / FLAC / MP3 - max file size 500MB
Awaiting Source AudioUpload a file to begin.
Streaming Target

Calibrate the release destination

Choose the playback environment so the engine can shape loudness, peak ceiling, and translation with intent.

Target Locked: Spotify Streaming Standard / -14 LUFS
Source Analysis

Intelligent source instrumentation

The engine reads the source like a mastering room: genre, tempo, tone, width, density, loudness, and release risk.

GN
GenreAwaiting Source Audio

Style family and release lane

Awaiting Source Audio
KY
KeyAwaiting Source Audio

Harmonic center and scale

Awaiting Source Audio
BP
BPMAwaiting Source Audio

Pulse and movement density

Awaiting Source Audio
DR
Dynamic RangeAwaiting Source Audio

Verse-to-chorus energy spread

Awaiting Source Audio
SW
Stereo WidthAwaiting Source Audio

Mono safety and side field

Awaiting Source Audio
EQ
Frequency BalanceAwaiting Source Audio

Low, mid, and high translation

Awaiting Source Audio
LU
LUFS-14 Target

Streaming loudness destination

Awaiting Source Audio
TP
True Peak-1.0 Ceiling

Release-safe peak control

Awaiting Source Audio
Mastering Chain

Signal flow through the Crown engine

A connected mastering path from source capture to release export.

Input
Analysis
Reference Match
EQ
Compression
Saturation
Stereo
Limiter
Export
Master Report

Release translation readout

Every metric answers what changed and why the record is closer to release.

Integrated LUFS-14 TargetAwaiting Source
True Peak-1.0 CeilingAwaiting Source
Stereo WidthCommercial WidthAwaiting Source
Low EndWarm Low EndAwaiting Source
MidVocal LaneAwaiting Source
HighAir ControlAwaiting Source
DynamicsDensity GuardAwaiting Source
Streaming TargetspotifyAwaiting Source
ConfidenceSession ArmedAwaiting Source
MASTER SUMMARY

Load a source mix and the Crown Engine will read the tonal balance, stereo image, loudness, and dynamic shape before writing a mastering summary in plain engineer language. The report will explain what changed in the music, not just which process ran.

  • Waiting for the mastering report.
Waveform Proof

Hear the difference before export

The wide waveform view becomes the proof point: original source, Crown master, and overlay comparison.

Original: -- LUFS / -- PeakMaster: -- LUFS / -- True PeakProof arms after analysis
Export

Release the finished master

Export unlocks after the Crown engine completes the mastering pass.

Export Format: