The World's First AI Mixing, Mastering & Music Generation Studio

StemDesk

Drop stems in. Get a mixed, mastered, release-ready bounce back — no DAW required. Need a new vocal or instrument? Generate it with AI locally on your GPU — key-matched, BPM-synced, with lyrics you wrote or lyrics the AI writes for you. StemDesk ships with a complete 17-plugin AAX/VST3 suite, 154 genre profiles, deep spectral analysis, one-click auto-mix, platform mastering, natural language mix control, FabFilter preset generation, and full session export to Pro Tools, Reaper, Ableton, and more. All AI. All local. Nothing uploaded.

AI-POWERED • STANDALONE • 17 PLUGINS INCLUDED • EVERY MAJOR DAW • 100% LOCAL

StemDesk Dashboard

STEMDESK DASHBOARD — AI MIXING, MASTERING, MUSIC GENERATION, LYRIC WRITING, SPECTRAL ANALYSIS, PRO TOOLS & REAPER EXPORT

Mixing Is 80% Setup, 20% Creativity

Every mix starts the same way: gain staging 30+ tracks, setting rough panning, carving EQ to stop stems from fighting each other, applying basic compression to tame dynamics. This takes hours of tedious, mechanical work before you even get to the creative decisions that actually define a mix.

Engineers with 20 years of experience do this work on autopilot. But it's still time they're spending on science instead of art. And for home producers without that experience, this phase is where mixes die — buried under mud, harsh frequencies, and competing elements.

Let AI Handle The Science. Then Make New Music With It.

StemDesk's AI engine analyzes your multitrack session and makes intelligent, genre-aware mixing decisions — gain staging, panning, EQ shaping, compression, frequency conflict resolution — using its own built-in 17-plugin suite. No third-party plugins required. Then it goes further: auto-detect your session's key and BPM, generate AI vocals, instruments, drums, or bass that match your track, write lyrics from a text prompt, and split every generation into individual stems ready to drop into the mix.

Hit Auto-Mix and get a fully processed stereo bounce. Master it for Spotify, Apple Music, or club play with one click. Tell the AI what's wrong in plain English — "vocals are buried," "kick needs more punch" — and watch it fix the mix. Or generate an entirely new part that your song was missing. All locally on your machine. No cloud. No API fees. No subscriptions to someone else's AI.

Five Steps. Full AI. Zero Cloud Uploads.

StemDesk runs entirely on your machine. Your audio — and your AI — never touch the internet.

1. Load Stems

Point StemDesk at a folder of bounced stems. WAV, AIFF, FLAC — any sample rate, any bit depth. Or drop a finished 2-track mix and Demucs (Meta's neural stem separation model) splits it into drums, bass, vocals, and instruments automatically on your local GPU.

2. AI Analysis

The AI engine runs deep spectral analysis — hundreds of FFT frames per stem — computing RMS, integrated LUFS, crest factor, spectral centroid, 7-band frequency energy, transient score, and cross-stem conflict detection. It auto-detects your session's key and BPM, classifies every track by role, recommends a best-fit genre profile from 154 options, and maps exactly where stems are fighting each other in the frequency spectrum.

3. AI Mix Decisions

StemDesk's AI computes gain targets, pan positions, surgical EQ (only where stems conflict), compression settings, saturation, gating, de-essing, sidechain ducking, and volume rides — all calibrated to your genre profile. Stems that don't need processing get skipped automatically. The AI explains every decision it makes so you can learn from it or override it.

4. AI Music Generation

Missing a vocal hook? Need a bass line? Generate new parts locally on your GPU using ACE-Step 1.5 — fully free, MIT-licensed, no cloud, no API fees. StemDesk suggests context-aware prompts matched to your session's key, BPM, and arrangement. Write your own lyrics or let the AI generate them. Every generation is automatically split into 4 stems via Demucs and dropped into your session ready to mix.

5. Deliver

Choose your output: hit Auto-Mix for a fully processed stereo bounce with platform mastering (Spotify, Apple, Club, Broadcast, and more) — no DAW needed. Build a new Pro Tools session via PTSL, export a Reaper .rpp with the full plugin chain in place, or hand off to Ableton (.als) and DAWproject hosts (Studio One, Cubase, Bitwig, Nuendo). Tell the AI what to fix in plain English. Every output path, one app.

The Most Complete AI Audio Studio Ever Built

⚡

One-Click Auto-Mix

Drop stems in, click Auto-Mix, get a fully mixed stereo WAV bounce. StemDesk loads its built-in 17-plugin suite via a non-GPL JUCE-based plugin host, applies all computed gain, pan, EQ, compression, saturation, gating, de-essing, and mix bus processing in a single pass. Adjustable processing intensity lets you dial between subtle correction and aggressive processing. No DAW required.

🎯

Mastering Export

Master your mix for any platform with one click. Spotify (−14 LUFS), Apple Music (−16 LUFS), YouTube (−14 LUFS), Club/DJ (−8 LUFS), CD master (−9 LUFS), Broadcast (EBU R128 at −23 LUFS), or set a custom target. ITU BS.1770-4 Annex 2 true-peak limiting, headroom-aware gain compensation, sample-rate conversion, and TPDF dithering for 16-bit delivery. Before and after measurements included.

🔌

Complete 17-Plugin Suite Included

No third-party plugins required. StemDesk ships with a full 17-plugin AAX/VST3 suite — SD Channel Strip, SD Parametric EQ, SD Compressor, SD Multiband Compressor, SD Limiter, SD Gate, SD De-esser, SD Saturator, SD Stereo Imager, SD Fattener, SD Transient Shaper, SD Reverb, SD Delay, SD DeNoise, SD Vocal Cleanup, SD Drum Tuner, SD Vocal Tuner — all built in C++/JUCE for real-time processing inside Pro Tools and Reaper. The plugins feed live spectral data back to the AI engine for real-time analysis without offline bouncing. In standalone mode, StemDesk hosts that same 17-plugin suite through its own bundled, non-GPL plugin host — no third-party purchases required. Already own FabFilter? StemDesk generates calibrated .ffp presets for your existing plugins too. Either way, you're covered.

📊

Deep Spectral Analysis

Every stem gets a full spectral fingerprint: RMS and peak levels, integrated LUFS, crest factor, spectral centroid and bandwidth, rolloff and flatness, 7-band frequency energy mapping (sub through air), activity envelope, and transient score. The visual spectral conflict heatmap shows which stems are fighting in which frequency bands — click any red cell for details and auto-generated corrective EQ.

🔬

Smart Selective Processing

Not every stem needs every plugin. StemDesk's conflict-based analysis only applies EQ cuts where stems are genuinely competing (within 3dB of the frequency band owner). Compression is skipped when crest factor is already on target. Saturation is skipped for clean and acoustic roles. Stems that own their frequency space get left alone. Less processing, more natural mixes.

🎚️

Active-LUFS Gain Staging

154 genre profiles across 12 families — from Trap and Drill to Classical, Afrobeats, Reggaeton, K-Pop, Film Score, and Podcast — each with calibrated target levels and relational balance rules. The engine classifies each track by role from its filename, computes gain targets that maintain genre-appropriate balance, and uses an architectural active-LUFS measurement (silence-aware loudness gating) to ensure sparse stems don't get over-boosted. Intentionally quiet and sparse tracks are detected and preserved.

🔗

Standalone + Every Major DAW

StemDesk works as a completely standalone application — no DAW installation required. Drop stems in, auto-mix, master, and export release-ready files. When you do want DAW integration, StemDesk speaks to all of them: build a brand-new Pro Tools session from stems via PTSL with automatic sample-rate conversion, export a complete Reaper .rpp project with the full plugin chain in place, or hand off to Ableton Live (.als) and any DAWproject host — Studio One, Cubase, Bitwig, Nuendo. One app, every workflow.

🎛️

FabFilter Preset Generation

Calibrated .ffp presets generated per-stem with user-selectable FabFilter version: Pro-Q 3 (surgical EQ with HPF, conflict cuts, presence boosts, air shelves), Pro-C 2 (LUFS-relative compression), Saturn 2 (role-based saturation), Pro-G (intelligent gating), Pro-DS (vocal de-essing), Pro-MB (multiband dynamics), and Pro-L 2 (mastering limiting). Presets load directly into your installed FabFilter plugins.

🎤

AI Music Generation — Local, Free, Unlimited

Generate vocals, instruments, drums, and bass directly inside your session using ACE-Step 1.5 — a fully free, MIT-licensed AI model running locally on your GPU. StemDesk auto-detects your session's key, BPM, and arrangement, then suggests context-aware generation prompts that match your track. Write your own lyrics, paste in a concept and let the AI write them for you, or go instrumental-only. Every generation is automatically split into 4 separate stems via Demucs and dropped into your session ready to mix. No cloud. No API fees. No per-generation charges. Generate as much as you want, forever.

💬

Natural Language Mix Feedback

Type what you hear: “kick needs more punch,” “vocals are buried,” “too much low end.” StemDesk’s AI interprets your plain-English feedback and translates it into specific gain, EQ, and compression adjustments across the relevant tracks. Every plugin publishes its parameters to the AI, and StemDesk validates each value before it’s applied. No knob-tweaking — just describe the problem and StemDesk solves it.

🧠

AI Intelligence Panel

A full AI co-engineer built into the dashboard. Four modules: Critique (objective mix analysis with specific fix suggestions), Coach (educational guidance explaining why every AI decision was made), Diagnostics (identify phase issues, clipping, frequency pileups), and Spectral Heatmap (interactive frequency conflict grid). Smart prompt suggestions based on your stems. AI lyric generation from text concepts. Ask questions in plain English and get real answers about your mix.

🔄

Reference Track Matching

Drop a reference track and StemDesk compares your mix against it — frequency balance, loudness, dynamics, stereo width. Get a match score and specific EQ correction curves that push your mix toward the reference's tonal signature. MP3 compensation ensures lossy references don't skew the analysis.

🎵

Stem Separation & A/B Compare

Drop any finished 2-track mix and Demucs (Meta’s neural separation model) splits it into drums, bass, vocals, and instruments — extracted locally on your GPU. Built-in A/B toggle lets you compare RAW stems against the processed MIX at the same timestamp. Space bar plays, Tab toggles. Hear exactly what StemDesk changed.

📈

Volume Rides & Gain Automation

StemDesk analyzes each stem in time-windowed chunks, calculates active-LUFS per segment, and writes volume automation that rides levels up and down to maintain consistency before compression even touches the signal. Quiet verses get lifted, loud choruses get tamed. The same fader ride a mix engineer does manually — automated and exported to your DAW session.

🔀

Sidechain Ducking

Automatic frequency-aware sidechain ducking between competing elements. Bass ducks when the kick hits. Pads duck for vocals. Guitars clear space for lead lines. StemDesk detects which stems need ducking based on spectral overlap and timing, computes the duck amount and release, and bakes it into the auto-mix bounce or exports it as automation. No manual routing required.

💿

Batch & Album Mode

Process an entire album in one pass. StemDesk scans a whole folder of songs, queues them, and mixes and masters each with its own genre-aware profile — then writes a per-song report. GPU-queued for throughput, so a full project finishes while you step away.

Three Layers. One Mission.

StemDesk is a modular three-layer system designed to scale from basic offline analysis to real-time AI-powered mixing.

Layer 1: DAW Bridge

Python session-building and export layer. Builds Pro Tools sessions via PTSL with automatic sample-rate conversion, exports complete Reaper .rpp projects with full plugin chains, and writes Ableton .als and DAWproject sessions (Studio One, Cubase, Bitwig, Nuendo). Reads track names from .ptx sessions to match your stem order.

Layer 2: 17-Plugin AAX/VST3 Suite

Seventeen custom C++/JUCE plugins (SD Channel Strip, SD EQ, SD Compressor, SD Multiband Compressor, SD Limiter, SD Gate, SD De-esser, SD Saturator, SD Stereo Imager, SD Fattener, SD Transient Shaper, SD Reverb, SD Delay, SD DeNoise, SD Vocal Cleanup, SD Drum Tuner, SD Vocal Tuner) for real-time in-DAW analysis and processing. Feeds live spectral data to the AI engine. Also generates calibrated presets for FabFilter plugins if the user owns them. Avid AAX Developer Program active.

Layer 3: AI Engine

The brain of StemDesk. Python analysis engine using librosa for spectral analysis, conflict-based decision making with selective processing, automatic key and BPM detection for session-aware context, ACE-Step 1.5 for local AI music generation (vocals, instruments, drums, bass), Demucs for neural stem separation, LLM integration for natural language mix control and AI lyric generation (with a built-in GPU model manager that detects your hardware and downloads or switches local models), a custom JUCE-based plugin host for non-GPL VST3 processing, and reference track matching. Every AI model runs locally — no cloud, no API keys, no per-use fees.

Not Another Plugin. A Complete AI Studio.

Other tools process a single track or require cloud uploads. StemDesk sees your entire session, mixes it, masters it, generates new parts, and explains every decision — all locally.

FeatureStemDeskiZotope NeutronLANDRRoEx AutomixSoundFlow
Session-level control✓ Full sessionSingle trackStereo mix onlyStems onlyMacro automation
Works without a DAW✓ Fully standalone✗ Requires DAW✓ (web)✓ (web)✗ Requires DAW
Built-in plugin suite✓ 17 AAX/VST3 pluginsOwn plugins only✗ Black box✗ Black box✗ No processing
No extra plugins required✓ Ships complete✗ $249–499 purchaseN/AN/A✗
Audio stays local✓ Always✓✗ Cloud upload✗ Cloud upload✓
One-click auto-mix✓ Full stereo bouncePer-track onlyMastering only✓ Cloud-based✗
Volume rides & sidechain✓ Automated✗✗✗✗
Platform mastering✓ ITU true-peak, 6 targets + custom✗✓✗✗
AI music generation✓ Local GPU, free, unlimited✗✗✗✗
Auto key & BPM detection✓ Session-aware✗✗✗✗
AI lyric generation✓ From text prompts✗✗✗✗
AI stem separation✓ Demucs, local GPU✗✗✗✗
Genre-aware decisions✓ 154 profilesLimited✗Limited✗
DAW session export✓ PT, Reaper, Ableton, DAWproject✗✗✗Macro only
Plugin preset generation✓ Full FabFilter suiteOwn plugins only✗✗✗
Natural language control✓ Plain English✗✗✗✗
Windows support✓ Windows-first✓✓ (web)✓ (web)✗ macOS only
Free tier✓ 3 plugins, unlimited use✗Limited✗Limited

From Bedroom Studios to Commercial Facilities

🎧

Professional Engineers

You know what a good mix sounds like. StemDesk eliminates 60-80% of the tedious mechanical setup so you can jump straight to the creative decisions — the part of mixing that actually requires your experience.

🏢

Studios & Facilities

Reduce mix prep time from hours to minutes across every room. Standardize gain staging practices across multiple engineers. Facility licensing available for multi-room commercial operations.

🏠

Home Producers

Professional-grade mixing intelligence without years of training. Get a balanced, genre-appropriate starting point instantly. Need a vocal? Generate one with AI. Need lyrics? The AI writes those too. Learn by watching what the AI recommends — every decision comes with a reason.

Plans That Scale With Your Studio

Three perpetual one-time licenses. No subscriptions. No contracts. Free updates within v1.x. Unlimited machines per key. 14-day refund.

★ Launch pricing — limited time. Buy once, own it forever.

Free
$0
 
  • 3 plugins — Compressor, Gate & Limiter (VST3 + AAX)
  • Use in any DAW (Pro Tools, Reaper, Cubase, FL Studio, Ableton, Studio One)
  • Core StemDesk app
  • Unlimited sessions
  • Free updates within v1.x
Download Free
Studio
$179 launch
reg. $249 • one-time
  • Everything in Pro (all 17 plugins)
  • One-click Auto-Mix — full stereo bounce, no DAW needed
  • Live Pro Tools (PTSL) session building
  • REAPER, Ableton & DAWproject export (Studio One, Cubase, Bitwig, Nuendo)
  • Platform mastering (Spotify, Apple, YouTube, Club, Broadcast, CD, custom)
  • Batch / album processing
  • Free updates within v1.x
Buy Studio

Pay-difference upgrades between tiers anytime. v2.0 will be a paid upgrade.

Technical Specifications

AI Engine

  • ACE-Step 1.5 — local music generation (MIT-licensed, free)
  • Demucs — neural stem separation (4-stem)
  • Auto key detection (chromagram analysis)
  • Auto BPM detection (onset + beat tracking)
  • Local LLM integration — natural language mix control
  • Built-in GPU model manager (detect, download & switch local LLMs)
  • AI lyric generation from text prompts
  • Context-aware prompt suggestions
  • All models run locally on GPU (CUDA) or CPU

Analysis Engine

  • Python 3, librosa, numpy, scipy, soundfile, pyloudnorm
  • Anti-aliased downsample for analysis
  • Hundreds of FFT frames per stem
  • 7-band frequency energy mapping
  • Active-LUFS integrated loudness (ITU-R BS.1770-4)
  • ITU BS.1770-4 Annex 2 true-peak measurement (4× polyphase oversample)
  • Cross-stem conflict detection
  • Selective processing with skip logic

Plugin Suite (17, AAX + VST3)

  • SD Channel Strip
  • SD Parametric EQ
  • SD Compressor
  • SD Multiband Compressor
  • SD Limiter
  • SD Gate
  • SD De-esser
  • SD Saturator
  • SD Stereo Imager
  • SD Fattener
  • SD Transient Shaper
  • SD Reverb
  • SD Delay
  • SD DeNoise
  • SD Vocal Cleanup
  • SD Drum Tuner
  • SD Vocal Tuner

Built in C++ on JUCE 8, with a full undo/redo history in the Channel Strip. AAX signed via PACE/Eden. VST3 via Microsoft Trusted Signing. Avid AAX Developer Program active.

Supported Formats

  • WAV, AIFF, AIF (uncompressed)
  • FLAC (lossless)
  • Mono and stereo stems
  • Any sample rate (resampled internally)
  • Any bit depth
  • 2-track separation via Demucs

Output Modes (Studio tier)

  • Standalone auto-mix (no DAW needed)
  • Standalone mastering export
  • Pro Tools PTSL session builder
  • Reaper .rpp export with full plugin chains
  • Ableton Live .als export
  • DAWproject export (Studio One, Cubase, Bitwig, Nuendo)
  • Batch / album mode
  • Automatic sample rate conversion
  • .ptx track-order import (matches stem order)

Genre Profiles (154)

  • Urban — Hip Hop, Trap, Drill, Phonk, Grime, Bounce, and more
  • R&B — Neo-Soul, Contemporary, Trap Soul, Gospel
  • Pop — Top 40, Dance Pop, K-Pop
  • Rock — Alt, Metal, Doom, Grunge, Indie, Punk, and more
  • Electronic — EDM, House, Techno, D&B, Dubstep, and more
  • Latin — Reggaeton, Salsa, Bachata, Cumbia, and more
  • Live — Country, Folk, Jazz, Classical, Reggae, and more
  • Film/Media — Score, Trailer, Game, Podcast
  • World — Afrobeats, Amapiano, Bollywood, Arabic, and more

All 154 profiles ship at every tier.

System Requirements

  • Windows 10/11 (64-bit). macOS support planned for a future release.
  • No DAW required (Studio tier standalone mode)
  • Pro Tools, Reaper, Ableton, or any DAWproject host optional (for Studio-tier DAW export)
  • 4 GB RAM minimum, 8 GB recommended
  • NVIDIA GPU recommended for AI generation and stem separation (CPU fallback supported)
  • ~500 MB installer; additional disk for optional CUDA model packages

FabFilter Preset Generation (Pro & Studio tiers)

  • Pro-Q 3 — surgical EQ per-stem
  • Pro-C 2 — LUFS-relative compression
  • Pro-L 2 — genre-calibrated limiting
  • Pro-DS — vocal de-essing
  • Saturn 2 — role-based saturation
  • Pro-MB — multiband dynamics
  • Pro-G — intelligent gating

Licensing

  • Ed25519-signed license keys (paste-only activation)
  • Per-tier feature gating enforced at runtime
  • License revocation + tamper-resistant, self-correcting activation
  • Unlimited machines per key
  • Pay-difference upgrades between tiers
  • 14-day refund
  • Fully automated key issuance via Stripe + AWS Lambda + KMS + SES — no manual support delays

20 Years Behind The Console

StemDesk is built by Asaf Fulks, founder of The OC Recording Company. With over two decades of professional audio experience — credits on Netflix, ESPN, MTV, and Disney; records with Grammy-winning and platinum-selling artists including work with Lil Wayne and Kendrick Lamar; three #1 hits mixed for Common Kings (written by Meghan Trainor); and a Billboard-charting Christian Rock track for Whosoever South — StemDesk isn't built from theory. It's built from thousands of real sessions.

Named 2016 Producer of the Year by Now Hip Hop Magazine, Asaf holds a U.S. patent for microphone technology and a B.A. in Computer Science from Denison University. He is a member of the California State Bar, giving StemDesk the rare combination of deep technical audio knowledge, real software engineering skills, and professional business judgment.

Every gain staging target, every EQ curve, every genre profile in StemDesk comes from actual professional practice — not academic datasets or synthetic training data. This is what happens when a working engineer builds the tool he always wished existed.

The Future of Mixing Is Here.

AI mixing. AI mastering. AI music generation. AI lyric writing. 17 built-in plugins. 154 genre profiles. Fully local. No cloud. No subscriptions to someone else's AI. StemDesk is available now — download the free tier or unlock the full studio at stemdesk.ai.

STEMDESK.AI • STEMDESK.NET • USPTO SERIAL 99670978

Get StemDesk at stemdesk.ai