Isolate every instrument.
100% local GPU stem separation.
Split any master recording into studio-grade Vocals, Drums, Bass, and Other stems on your own hardware. Powered by Demucs v4, MDX-Net, and our Pro Ensemble crossover—with zero cloud queues, zero per-song credits, and zero subscription lock-in.
One-time $29 lifetime license · Zero subscriptions · Audition real separated stems right now in the Interactive Web Workstation
#F472B6), Drums (#FBBF24), Bass (#38BDF8), and Other (#A3E635) with sample-accurate A-B practice looping, individual Mute/Solo buses, and 24-bit lossless FLAC export.
Studio-Grade Separation Without the Cloud
Built for producers, remixers, music educators, and instrumentalists who demand phase-accurate stems and complete privacy.
100% Offline & Private
Your unreleased masters, client stems, and vinyl rips never leave your computer. All neural inference runs locally on Windows DirectML, Apple Silicon Core ML, or multi-core CPU.
Pro Ensemble Crossover (HTDemucs + MDX-Net)
Combines MDX-Net’s ultra-clean vocal isolation with Hybrid Transformer Demucs v4’s punchy drum transients and deep sub-bass via a phase-coherent spectral crossover.
Musician Practice Deck (A-B Loop & Mix Bounce)
Solo a difficult bassline or guitar solo, set seamless A-B loop markers, mute a single instrument to create an instant backing track, and bounce your custom 4-bus mix in one click.
24-Bit Lossless FLAC & Batch Queue
Export bit-transparent 24-bit / 48 kHz FLAC or uncompressed WAV stems alongside 320 kbps MP3, and queue entire albums or sample packs for unattended overnight batch separation.
Choose Your Edition
Cloud stem splitters charge $10–$25 every month, throttle you with per-minute upload credits, and compress your audio. Stem Studio Pro is $29 once — unlimited local separations forever.
Community Edition
Free Forever tier to split tracks and audition the 4-bus workstation.
- 100% Offline local 4-stem separation (Vocals, Drums, Bass, Other)
- Standard HTDemucs v4 4-stem neural engine
- Interactive 4-bus mixer with Mute, Solo & A-B loop playback
- Standard 16-bit WAV & MP3 stem export
- No Pro Ensemble Crossover (HTDemucs + MDX-Net)
- No 24-Bit / 48 kHz Lossless FLAC export
- Single-track processing (no multi-file batch queue)
Instant browser audition & free Community desktop tier.
Stem Studio Pro
One-Time Lifetime License · Zero Subscriptions · Full Studio Pipeline.
- Everything in Community Edition
- Pro Ensemble Crossover (HTDemucs v4 + MDX-Net vocal/instrumental fusion)
- Full DirectML & Apple Silicon Core ML GPU acceleration
- 24-Bit / 48 kHz Lossless FLAC & 32-bit float WAV export
- Unlimited multi-track Batch Queue for albums & sample packs
- Custom Mix Bounce (instant instrumental / acapella / practice mixdown)
- All v1.x updates & priority engineering support
System Requirements
Optimized for modern Windows DirectML and Apple Silicon Core ML hardware.
🪟 Windows DirectML
- OS: Windows 10 (21H2+) or Windows 11 64-bit
- Processor: Intel Core i5 / AMD Ryzen 5 or newer
- GPU: DirectX 12 DirectML GPU (NVIDIA RTX/GTX, AMD Radeon RX, Intel Arc)
- RAM: 8 GB minimum (16 GB recommended for Pro Ensemble)
- Storage: 2 GB free disk space for neural weights
🍎 macOS Core ML
- OS: macOS 12 (Monterey), 13 (Ventura), 14 (Sonoma), 15 (Sequoia)
- Processor: Apple Silicon (M1, M2, M3, M4) or Intel x86_64
- GPU: Core ML & Metal Performance Shaders (MPS) acceleration
- RAM: 8 GB unified memory minimum (16 GB recommended)
- Storage: 2 GB free disk space for neural weights
📦 Licensing & Delivery
- Delivery: Instant license key and installer links via LemonSqueezy
- Activation: One-time online activation, then 100% offline operation
- Web Suite: Instant zero-install browser audition at
stemstudio.revisitedlabs.com - Support: Direct engineering support at
[email protected]
Frequently Asked Questions
Everything you need to know about Stem Studio’s neural engines, privacy, and licensing.
Do my audio masters or songs ever get uploaded to a cloud server?
Never. Stem Studio performs 100% of its neural stem separation locally on your computer’s GPU or CPU. Your unreleased tracks, client masters, and practice songs never leave your machine.
What is the Pro Ensemble Crossover engine?
Single neural models often trade off vocal purity against drum transient punch. Stem Studio Pro’s Ensemble mode runs both MDX-Net and HTDemucs v4 locally and blends their outputs across a phase-coherent spectral crossover—giving you artifact-free vocals alongside razor-sharp snare and kick transients.
Is there a recurring subscription or per-minute credit fee?
No. Unlike online stem splitters that charge monthly subscriptions or meter you by minutes of audio uploaded, Stem Studio Pro is a one-time purchase of $29 USD. Separate as many songs, albums, and stems as you want forever.
What is your refund policy?
Stem Studio Pro is a one-time digital purchase and all sales are final. You can audition the workflow in our Interactive Web Demo and test the free Community Edition on your own hardware before upgrading. If you encounter any technical issue, contact [email protected].