Freedom251 › AI Music Mastering Software
Quantara Music
What Quantara Music is
Quantara Music is a browser-based tool for mastering audio, with processing carried out on the user's device using deterministic DSP. Its adjustable 15-stage chain includes A/B bypass, and loudness references cover streaming services as well as club, broadcast, and vinyl targets. Users can start from 33 genre presets grouped across seven categories. Live meters display BS.1770 loudness in LUFS, true peak, spectrum, waveform, and gain reduction. The studio accepts WAV, FLAC, MP3, M4A, AAC, AIFF, and OGG files up to 500 MB. It exports 16-bit and 24-bit WAV; Label adds 32-bit float WAV and REST API access with personal keys for automated mastering. Pro and higher plans support uploading a commercial reference track to match tonal balance, dynamics, and loudness. The free plan allows three exports per month without a credit card. A one-time €4.99 Single stereo master option covers one track with HD WAV export. Quantara says mastering audio stays local rather than being sent to or stored on its servers. The web product is described for producers, including AI music creators and DAW users.
Who it suits
Quantara suits producers who want to master tracks in a browser and work with genre starting points, loudness targets, and detailed meters. Its reference matching and API options also serve users on qualifying plans who need track matching or automated workflows.
What it does well
- Local audio processing is described in the privacy policy.
- A 15-stage adjustable chain includes A/B bypass.
- Loudness targets include streaming, club, broadcast, and vinyl.
- Live meters show LUFS, true peak, spectrum, waveform, and gain reduction.
- Accepts audio files up to 500 MB.
- Free plan includes three exports monthly without a credit card.
What to know first
- Free plan is limited to three exports per month.
- Reference-track matching requires Pro or a higher plan.
- 32-bit float WAV and REST API access require Label.
Limits
The free plan includes three exports per month. The one-time Single stereo master plan covers one track with HD WAV export; higher-tier options are needed for reference matching, 32-bit float WAV, or API access.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | 1 export with a watermark | Free |
| Studio | €12.99/month or €129.90/year · Monthly or annual subscription | €12.99 a month |
| Pay Per Track | €4.94 per track, one-time · Single-track purchase | €4.94, paid once |
| Single stereo master | billed once · One track · HD WAV export | €4.99, paid once |
| Pro | €8.99/month or €89.90/year · Unlimited exports | €8.99 a month |
As quantaramusic.com lists them, read 21 Oct 2026. The maker's own page has the final word.
Getting started
- Open the Quantara Music website in a browser.
- Choose the free plan or a paid option such as the one-time Single stereo master.
- Upload a supported audio file up to 500 MB.
- Adjust the mastering chain and choose loudness references or genre starting points.
- Export a WAV file using the options available on your plan.
Verdict
Choose Quantara Music if you want browser-based mastering with local audio processing, multiple loudness references, and detailed live metering. Look elsewhere if you need reference-track matching on the free plan or 32-bit float WAV without Label.
Questions
Is Quantara Music free?
Yes. Its free plan costs nothing and includes three exports per month without a credit card.
What does the one-time €4.99 option include?
Single stereo master is billed once and covers one track with HD WAV export.
Which audio formats can it accept?
The studio accepts WAV, FLAC, MP3, M4A, AAC, AIFF, and OGG files up to 500 MB.
Can I upload a reference track?
Yes, on Pro and higher plans, for matching tonal balance, dynamics, and loudness.
Where is audio processed?
Quantara says mastering audio is processed locally and is not transmitted to or stored on its servers.
Does Quantara have an API?
The Label plan includes REST API access with personal API keys for automating mastering workflows.
Facts from Quantara Music's own pages
- Account security
- The privacy policy says passwords are stored as salted hashes and two-factor authentication is available. · quantaramusic.com, 21 Oct 2026
- Adjustable chain
- Users can adjust a 15-stage mastering chain with real-time controls and A/B bypass. · quantaramusic.com, 21 Oct 2026
- API
- The site describes REST API access with personal API keys for automating mastering workflows on a Label plan. · thejoai.com, 21 Oct 2026
- Audio privacy
- Quantara says it does not receive, store or access audio mastered in the browser. · quantaramusic.com, 21 Oct 2026
- Availability limitation
- The terms provide no guaranteed uptime and say individual features can be temporarily unavailable. · quantaramusic.com, 21 Oct 2026
- Browser deployment
- No plug-in installation is required; the product works entirely in a web browser. · quantaramusic.com, 21 Oct 2026
- Content ownership
- The terms say users retain ownership of uploaded and mastered content and Quantara does not use it to train models. · quantaramusic.com, 21 Oct 2026
- Data deletion
- Users can delete an account, after which server-side account data is permanently removed within 30 days. · quantaramusic.com, 21 Oct 2026
- Export formats
- Exports include 16-bit WAV, 24-bit WAV, 32-bit-float WAV on Studio, FLAC and MP3 320 depending on plan. · quantaramusic.com, 21 Oct 2026
- Exports
- The site lists 16-bit and 24-bit WAV exports, plus 32-bit float WAV on the Label plan. · quantaramusic.com, 9 Oct 2026
- File limits
- The studio accepts WAV, FLAC, MP3, M4A, AIFF, and OGG files up to 500 MB. · quantaramusic.com, 9 Oct 2026
- Genre presets
- The site lists 34 genre starting points grouped into seven categories. · quantaramusic.com, 21 Oct 2026
- Independent description
- THEJO AI describes Quantara as a free browser-based mastering tool with local processing and real-time metering. · thejoai.com, 21 Oct 2026
- Independent format observation
- THEJO AI lists WAV, MP3, FLAC, M4A, AIFF and OGG as supported inputs and 16-bit, 24-bit and 32-bit-float WAV outputs by plan. · thejoai.com, 21 Oct 2026
- Independent launch date
- The independent THEJO AI directory lists June 22, 2026 as Quantara's launch date. · thejoai.com, 21 Oct 2026
- Independent library claim
- THEJO AI says the Cloud Library can store, search, filter, tag and annotate uploads and masters across devices. · thejoai.com, 21 Oct 2026
- Independent pricing observation
- THEJO AI's directory page displayed no pricing information in its pricing field. · thejoai.com, 21 Oct 2026
- Independent stem claim
- THEJO AI claims Quantara can separate tracks into vocals, drums, bass and instruments using six Demucs models. · thejoai.com, 21 Oct 2026
- Input formats
- The studio accepts WAV, FLAC, MP3, M4A, AAC, AIFF and OGG files up to 500 MB. · quantaramusic.com, 21 Oct 2026
- Intended users
- The site describes the product as built for producers and highlights workflows for AI music creators and DAW users. · quantaramusic.com, 9 Oct 2026
- Local processing
- Mastering runs locally in the browser through Web Audio and the audio file is not uploaded for mastering. · quantaramusic.com, 21 Oct 2026
- Loudness targets
- Targets cover Spotify, Apple Music, YouTube, Tidal, Amazon, Deezer, iTunes, Club, Beatport, SoundCloud, EBU R128 broadcast and vinyl. · quantaramusic.com, 21 Oct 2026
- Mastering controls
- The feature set includes high-pass and shelving EQ, low-mid and presence EQ, noise and hiss reduction, 31-band EQ, saturation, compression, stereo-width controls and true-peak limiting. · quantaramusic.com, 21 Oct 2026
- Mastering limitation
- The studio guide says mastering polishes a finished mix and cannot repair problems such as buried vocals or muddy bass. · quantaramusic.com, 21 Oct 2026
Where Quantara Music stands on Freedom251
- AI Music Mastering Software#21 of 50