PRIVATE BY PHYSICS
Audio is processed on-device. There is no server that could leak, train on, or retain your material — we never receive a single sample.
Pull vocals, drums, bass, guitar, piano out of any mix with state-of-the-art AI — built by a mastering engineer who uses it on real client work. No uploads. No subscription. No cloud.
Cloud separators upload your unreleased masters to someone else's servers. Master Split runs every model on your own Apple Silicon — your work stays yours.
Audio is processed on-device. There is no server that could leak, train on, or retain your material — we never receive a single sample.
32-bit float WAV at the source sample rate. The stems sum back to the original mix with sample-accurate precision — they null against your source.
One-time purchase, perpetual license, two Macs. Works offline. No subscription meter running while you create.
A cascade of state-of-the-art AI models — multiple architectures stacked so each catches what the others miss, with dedicated cleanup passes that keep vocal bleed out of your instrumentals.
The fastest path to a clean acapella or karaoke track, scrubbed by a three-architecture vocal stack.
Remix-ready band stems. Drums and bass extracted from a vocal-cleaned residual for noticeably cleaner separation.
Full deconstruction for sampling, transcription, restoration, and detailed re-production work.
*Measured on Apple Silicon. Performance varies with machine and track length.
Divide any vocal stem into lead and backing vocals — isolate the performance or lift the harmony bed.
De-Reverb, De-Echo, De-Breath and De-Noise any stem individually. Stackable, and never destructive — Restore Original any time.
Queue an entire folder, press once, come back to finished, consistently-named stems for every track.
Save and reopen your work — tracks, stems and state — with undo and redo throughout.
Title, artist, album and BPM travel from your source file into every exported stem.
Notarized by Apple, updates itself in the background. Works fully offline for up to 30 days at a time.
Secure checkout by Stripe. License key delivered to your email within minutes.
14 days, every feature, no card required. Your trial key arrives by email.
A Mac with Apple Silicon (any M-series chip), macOS 13 or later. 16 GB of memory is recommended. The AI models (~2 GB) download once on first use.
No. All separation runs locally on your Mac. The app only connects to the internet for license validation, software updates, and the one-time model download — never with your audio.
Master Split was built by a mastering engineer for his own client work and tuned by ear against the leading professional tools. Quick mode's vocal stack runs three different AI architectures in sequence so each catches what the others miss — and every mode guarantees the stems sum back to your original mix with sample-accurate precision.
The stems are yours — we claim nothing. You're responsible for having rights to the audio you process, as with any tool.
Two Macs per license, and you can move between machines yourself any time with the in-app Deactivate button — no support ticket needed.
Yes — after activation the app runs fully offline for up to 30 days at a stretch, then just needs a moment online to re-validate. Your audio never requires a connection at all.
WAV, AIFF, FLAC, MP3 and M4A in. Stems export as 32-bit float WAV at the source sample rate.