Quantara Music

Spec sheet

What it does

Quantara Music is a browser-based audio-mastering service for preparing music for streaming, clubs, broadcast and vinyl.Read 21 Oct 2026 · quantaramusic.com

Product

Quantara is a browser-based music mastering tool that processes audio on the user's device using deterministic DSP.Read 9 Oct 2026 · quantaramusic.com

Intended users

The site describes the product as built for producers and highlights workflows for AI music creators and DAW users.Read 9 Oct 2026 · quantaramusic.com

API

The site describes REST API access with personal API keys for automating mastering workflows on a Label plan.Read 21 Oct 2026 · thejoai.com

Privacy

The privacy policy says mastering audio is processed locally and is not transmitted to or stored on Quantara's servers.Read 9 Oct 2026 · quantaramusic.com

Support

The contact page directs technical, billing, and account-access questions to [email protected] and says most messages receive a reply within 24 hours on business days.Read 9 Oct 2026 · quantaramusic.com

Account security

The privacy policy says passwords are stored as salted hashes and two-factor authentication is available.Read 21 Oct 2026 · quantaramusic.com

Adjustable chain

Users can adjust a 15-stage mastering chain with real-time controls and A/B bypass.Read 21 Oct 2026 · quantaramusic.com

Audio privacy

Quantara says it does not receive, store or access audio mastered in the browser.Read 21 Oct 2026 · quantaramusic.com

Availability limitation

The terms provide no guaranteed uptime and say individual features can be temporarily unavailable.Read 21 Oct 2026 · quantaramusic.com

Browser deployment

No plug-in installation is required; the product works entirely in a web browser.Read 21 Oct 2026 · quantaramusic.com

Content ownership

The terms say users retain ownership of uploaded and mastered content and Quantara does not use it to train models.Read 21 Oct 2026 · quantaramusic.com

Data deletion

Users can delete an account, after which server-side account data is permanently removed within 30 days.Read 21 Oct 2026 · quantaramusic.com

Export formats

Exports include 16-bit WAV, 24-bit WAV, 32-bit-float WAV on Studio, FLAC and MP3 320 depending on plan.Read 21 Oct 2026 · quantaramusic.com

Exports

The site lists 16-bit and 24-bit WAV exports, plus 32-bit float WAV on the Label plan.Read 9 Oct 2026 · quantaramusic.com

File limits

The studio accepts WAV, FLAC, MP3, M4A, AIFF, and OGG files up to 500 MB.Read 9 Oct 2026 · quantaramusic.com

Genre presets

The site lists 34 genre starting points grouped into seven categories.Read 21 Oct 2026 · quantaramusic.com

Independent description

THEJO AI describes Quantara as a free browser-based mastering tool with local processing and real-time metering.Read 21 Oct 2026 · thejoai.com

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.Read 21 Oct 2026 · thejoai.com

Independent launch date

The independent THEJO AI directory lists June 22, 2026 as Quantara's launch date.Read 21 Oct 2026 · thejoai.com

Independent library claim

THEJO AI says the Cloud Library can store, search, filter, tag and annotate uploads and masters across devices.Read 21 Oct 2026 · thejoai.com

Independent pricing observation

THEJO AI's directory page displayed no pricing information in its pricing field.Read 21 Oct 2026 · thejoai.com

Independent stem claim

THEJO AI claims Quantara can separate tracks into vocals, drums, bass and instruments using six Demucs models.Read 21 Oct 2026 · thejoai.com

Input formats

The studio accepts WAV, FLAC, MP3, M4A, AAC, AIFF and OGG files up to 500 MB.Read 21 Oct 2026 · quantaramusic.com

Local processing

Mastering runs locally in the browser through Web Audio and the audio file is not uploaded for mastering.Read 21 Oct 2026 · quantaramusic.com

Loudness targets

Targets cover Spotify, Apple Music, YouTube, Tidal, Amazon, Deezer, iTunes, Club, Beatport, SoundCloud, EBU R128 broadcast and vinyl.Read 21 Oct 2026 · quantaramusic.com

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.Read 21 Oct 2026 · quantaramusic.com

Mastering limitation

The studio guide says mastering polishes a finished mix and cannot repair problems such as buried vocals or muddy bass.Read 21 Oct 2026 · quantaramusic.com

Metering

Live tools show BS.1770 LUFS loudness, true-peak detection, spectrum, waveform and compressor or limiter gain reduction.Read 21 Oct 2026 · quantaramusic.com

Payment handling

The privacy policy says Stripe processes payments and Quantara does not see or store card numbers.Read 9 Oct 2026 · quantaramusic.com

Payment security

Stripe handles payments; card numbers are entered on Stripe and are not stored by Quantara Music.Read 21 Oct 2026 · quantaramusic.com

Processing engine

The service uses its own deterministic DSP engine rather than an AI mastering model, so identical settings produce the same result.Read 21 Oct 2026 · quantaramusic.com

Rating on maker site

The homepage displays 4.9 out of 5 from 201 ratings.Read 21 Oct 2026 · quantaramusic.com

Reference matching

Pro and higher plans can compare a commercial reference track for tonal balance, dynamics and loudness.Read 21 Oct 2026 · quantaramusic.com

Stem-separation limitation

The privacy policy says stem separation is not currently available, while the terms say it may sometimes be offline when enabled.Read 21 Oct 2026 · quantaramusic.com

Subscription cancellation

Subscriptions can be cancelled for the next renewal but remain active through the paid period, with no refund for unused time.Read 21 Oct 2026 · quantaramusic.com

True-peak ceiling

Exports use a true-peak ceiling of −1 dBTP.Read 21 Oct 2026 · quantaramusic.com

Plans and prices

Every Quantara Music plan and price →

Where Specifiction places it

• AI mastering tools#7 of 508.6