Bring the session
Upload a stereo pre master for source separation, or bring up to 60 original stems for listening-aware grouping.
Production-first stem preparation
Cleaner stems.Smarter delivery.
Turn stereo pre masters or full multitrack sessions into organised, quality-checked stem packages—without relying on an engineer to inspect, clean, and process dozens of files by hand—saving hours or even days of production time, streamlining your production workflow.
6, 8 or 12 outputsUp to 60 stems32-bit float delivery
Current project
Nova — Night Drive
Stereo pre master analysis6 outputs
Drums
Clean
Bass
Clean
Lead Vocals
Checked
Guitars
Clean
Keys
Clean
Other
Ready
Production quality gate
Consensus checked · 32-bit float
A calmer workflow
From upload to delivery in three clear stages.
The system automates repetitive decisions, but keeps quality gates and export choices visible to the person responsible for the release.
Let the system listen
Choose up to 6, 8 or 12 outputs. Uncertain sources stay out of the delivery until they pass the production gate.
Deliver with confidence
Only stems that pass presence, consistency, stereo-safety, reconstruction and listening checks can be delivered.
Built for real sessions
Automation that respects the audio.
Every feature is designed to reduce checking time while preserving the decisions that still belong to a producer or engineer.
Adaptive 6–12 stem layouts
Use the clean six-stem default or add control only when the production actually needs it.
Listening-aware sorting
Unclear original stem labels are checked by sound, not forced into groups from filenames alone.
Independent verification
The core separation is cross-checked before detailed outputs are accepted for delivery.
Production QC
Format, alignment and placement checks surface issues before they reach a client or mix engineer.
Delivery-ready metadata
Artist and track details flow into saved projects, ZIPs, WAV names and processing reports.
Reversible by design
No hard gating, no blanket normalisation and no silent decisions that destroy ambience or musical tails.
Quality without over-processing
Clean enough to deliver. Conservative enough to trust.
Every delivery is checked as a complete set. If a stem is absent, duplicated, unsafe, clipped or cannot be verified against the source, delivery stays locked until it is ready for review.
Cross-checks the core separation before delivery
Rejects blank, duplicate or low-confidence outputs
Preserves the musical balance during export preparation
Requires final listening approval before delivery
Production gate
Delivery safeguards active
Core separationCross-checked
Track integrityVerified
Stereo safetyChecked
Delivery formatProtected
Listening approvalRequired
Engineers retain control of sample rate, bit depth, group selection and final listening approval at export.
Simple project pricing
Pay for the delivery you actually need.
Three quick choices show your exact project price. No subscription is required, and StemMasterPro™ captures the authorised price only after the delivery passes its production checks and is saved.
Step 1
What are you starting from?
Step 2
How many stems do you want back?
Step 3
Add a mastered stereo version?
Failed processing is not capturedAutomatic retries never create another charge
Studio access
Bring StemMasterPro™ into your studio.
Choose the Mac plugin or a dedicated desktop app. Public downloads activate after platform signing and clean-machine installation checks are complete.
Audio Unit and VST3
Plugin for Apple Mac
Capture directly from Logic Pro and other compatible Mac production environments.
Coming Soon
macOS Universal
StemMasterPro™ for Mac
A dedicated Universal Mac desktop experience for Apple silicon and Intel Macs.
Download for MacApple Approved
Windows x64
StemMasterPro™ for Windows
A focused Windows desktop experience for studio and production systems.
Coming Soon
Make stem delivery the easy part.
Build a cleaner, better-labelled and easier-to-audit stem package for your next mix, master or client handoff.
Start a projectProtected workspace · reversible processing · documented exports