StemDeck separates songs into stems for practice, study, transcription, remixing, and other creative audio work. Its Demucs htdemucs_6s model separates vocals, drums, bass, guitar, piano, and other sounds. Users can import MP3, WAV, FLAC, OGG/Opus, MP4, and M4A files, or provide YouTube URLs. The workspace offers waveform lanes, mute and solo controls, volume adjustment, looping, and exports of individual stems or a custom mix. Song analysis includes BPM, key, scale, confidence, integrated LUFS, and sample peak level. StemDeck says processing runs locally and that the app does not transmit, store, cache, or redistribute audio. Internet access is needed for YouTube downloads and the initial model fetch of about 170 MB; the model is cached afterward. The project documents Docker and Unraid deployment, running the web server from source, and a local REST API. It is free, with no account, quota, uploads, or subscription, but handles one job at a time, supports up to six stems, and has no mobile app. Processing speed depends on local hardware.
Who it is for
StemDeck suits musicians, producers, teachers, hobbyists, and listeners who want a focused tool for practice, study, transcription, or remixing. It may also suit people who want local processing or to self-host the project.
What is good
- Separates up to six instrument and vocal stem types.
- Accepts common audio files and YouTube URLs.
- Exports individual stems or a custom mix.
- Free with no account or quota.
What to know first
- Handles one job at a time.
- No mobile app is listed.
- Initial model fetch is about 170 MB.
- Processing speed depends on local hardware.
Verdict
StemDeck pairs song separation with editing, analysis, and export tools, and can be self-hosted. Its one-job-at-a-time limit and dependence on local hardware are worth considering.
StemDeck plans and pricing
All plansCompared on stem separation software
- Free plan
- Yes
- Stem types
- vocals, drums, bass, guitar, piano, other
- Max upload size
- 400 MB
- Max track length
- 60 min
- Batch processing
- Yes
- Export formats
- WAV, MP3
- Desktop app
- Yes
- API access
- Yes
