StemMaster
StemMaster: A focused standalone tool for one-pass AI stem mixing, mastering, and editable re-rendering. Ranked #4 of 41 in AI Audio Mixing Software by our editors (7.8/10); pricing: Paid; best for one-pass AI stem mixing and mastering.
At a glance
- Editor score7.8 / 10
- PricingPaid
- Best forOne-pass AI stem mixing and mastering
- Free planNo
- Paid from$99 one-time
- Stem separationNo
- Facts checked22 Sep 2026
Where it wins
- Combines stem balancing, automation, unmasking, ducking, and mastering
- Engine Notes explain processing decisions, with fast manual re-rendering
- Lifetime license with free updates across the 1.x series
Where it doesn't
- Standalone only, without DAW plugin integration
- The optional LLM engine may add separate provider charges
- Designed for stereo processing rather than broader spatial formats
Our verdict on StemMaster
StemMaster is a standalone desktop application for music producers and engineers who want AI-assisted mixing and mastering from individual song stems. It automatically balances levels and pans by stem role, applies EQ and compression, adds spatial processing, and prepares a mastered result in one pass. Vocal riding, spectral unmasking, sidechain ducking, reference-track matching, and loudness-targeted limiting extend its role beyond basic level balancing. It runs on Windows and Apple Silicon Macs and supports stem or full-mix export.
The $99 StemMaster plan is a one-time purchase that includes a lifetime license, free updates across the 1.x series, and a built-in offline engine. Export options include 24-bit WAV, AIFF, FLAC, MP3, and 32-bit float. The optional LLM engine can work with the user's own API key and receives measurements rather than audio; separate provider charges may apply. A free demo is available, while exports require a license and mastered playback is tagged.
StemMaster's strongest fit is for users who want a broad automated pass while retaining control afterward. Section-based gain, pan, filter, reverb, and stereo-width automation supports more detailed shaping, while manual stem adjustments, loudness-matched A/B comparison, creative direction, and Engine Notes make the processing easier to inspect and revise. Its limitation is its standalone design: it is not a DAW plugin and does not provide an integration layer. Choose StemMaster if one-pass stem processing, local operation, and a one-time price matter most; choose another tool if direct DAW workflow integration is essential.
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StemMaster pricing
All 1 StemMaster plans and prices →
StemMaster fact sheet
| Free plan | No |
|---|---|
| Paid from | $99 one-time |
| DAW plugin | No |
| Stem separation | No |
| Automatic EQ | Yes |
| Automatic dynamics | Yes |
| Spatial processing | Stereo |
| Maximum track count | Not verified |
| Plugin formats | Standalone |
| Money-back guarantee | 14 days |
| Deployment | Desktop |
| Platforms | Windows, macOS |
| Support | Email, Docs |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Paid (source) |
| Website | nomzstudios.com |
| Facts checked | 22 Sep 2026 |
Alternatives to StemMaster
- iZotope Neutron 5A deep AI-assisted mixing suite for producers who want detailed control inside a DAW.9.2
- iZotope Nectar 4A focused vocal suite with AI assistance, harmonies, effects, and unmasking.7.9
- EZmix 3A flexible preset-led mixing tool, but not a complete automatic full-mix solution.7.9
See all StemMaster alternatives →
StemMaster vs the competition
- StemMaster vs iZotope Neutron 5
- StemMaster vs iZotope Nectar 4
- StemMaster vs EZmix 3
- StemMaster vs StemDesk
- StemMaster vs NeuroMix AI
- StemMaster vs TonalBrain
Compare StemMaster with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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