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L/R correlation: −1…+1
True Peak (dBTP) accounts for inter-sample peaks after AAC/Opus. Sample-peak can be misleading — a track looks clean but clips once uploaded to Spotify. Magic Master measures True Peak with oversampling and keeps −1 dBTP headroom.
LRA shows the loudness spread in LU: 0–5 — tight, 5–10 — balanced, 10–15 — dynamic, 15+ — very dynamic (often classical/jazz).
Spotify and YouTube — around −14 LUFS, Apple Music — −16, Club — −9, Broadcast — −23. Pick a platform in the settings and the target LUFS is filled in automatically.
The green check appears when LUFS lands within ±2 LU of the platform target and True Peak ≤ −1 dBTP. It's not a distributor moderation guarantee, but a good 'ready to release' signal.
Yes, with limits: guests get 3 masters per month, a registered account gets 1 per day — and 3 during the first 24 hours after sign-up. PRO features are paid for with tokens; there is no subscription.
Automatic mastering right in your browser: loudness is set to the target LUFS of the chosen platform, true peak is controlled per ITU-R BS.1770-5, and dynamics are processed across multiple bands. Processing usually takes one to two minutes.
Yes. A dedicated module strips generative-model fingerprints and separation artefacts before mastering, so the chain does not bake them into the result.
16 platform LUFS targets: Spotify, Apple Music, YouTube, VK Music, Yandex Music, Zvuk and others. Export to WAV, 24-bit WAV, MP3, FLAC, Opus and AAC.