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GLOW Mastering
What GLOW Mastering is
GLOW Mastering is a web-based AI mastering engine that adjusts tone and dynamics and includes multi-speaker processing for devices such as phones, headphones, cars, and club systems. It processes audio locally in the browser using your computer, without uploading files to a backend server. You can listen before downloading and compare the original mix with the mastered version. Batch processing accepts up to 10 files and 2GB total, with completed masters downloadable as a ZIP. Supported inputs are WAV, MP3, FLAC, AAC, M4A, OGG, WEBM, and AIFF. WAV export options are Streaming Ready (16-bit / 44.1kHz), Cinema & Pro (24-bit / 48kHz), and Studio Archive (24-bit / 96kHz). Dedicated EDM profiles cover techno, house, psytrance, dubstep, dub, trance, and chillout; the service also says it handles hip-hop and rock. The free plan includes three free masters and requires no credit card. A five-master top-up costs 7.99 USD as a one-time payment, and Unlimited Access costs $139 a year. A support contact form is available on the web service.
Who it suits
GLOW Mastering suits people preparing audio releases who want browser-based mastering, local processing, and a way to compare the result with the original. Its plans distinguish a free option, occasional top-ups, and annual unlimited access.
What it does well
- Processes audio locally in the browser.
- Batch handles up to 10 files and 2GB total.
- Accepts eight listed audio input formats.
- Offers three WAV export specifications.
- Free plan includes three masters without a credit card.
What to know first
- Free plan is limited to three masters.
- Five-master top-up is a one-time 7.99 USD payment.
- Unlimited Access costs $139 a year.
- Web is the only listed platform.
Limits
Start Free provides three free masters and lists Standard and EDM modes. The separate monthly allowance is 5 tracks per month; Top Up With 5 Masters supplies five masters, while Unlimited Access removes top-ups for unlimited masters during the annual plan.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Start Free | 3 free masters · Hi-Rez WAV · Standard and EDM modes · no credit card required | Free |
| Unlimited Access | per year · Unlimited masters · no top-ups needed · cancel anytime | $139 a year |
| Top Up With 5 Masters | One-time payment · 5 masters · credits never expire | $7.99, paid once |
As glowmastering.com lists them, read 8 Oct 2026. The maker's own page has the final word.
Getting started
- Open https://glowmastering.com/ in a web browser
- Choose Start Free, Top Up With 5 Masters, or Unlimited Access
- Upload a supported audio file
- Select mastering and WAV export options
- Listen and compare the original and mastered versions
- Download the finished master or ZIP batch
Verdict
GLOW Mastering offers local browser processing, batch mastering, and several WAV export choices. Compare the free allowance and paid options with the amount of mastering you need.
Questions
Is GLOW Mastering free?
Yes. Start Free costs nothing and includes three free masters with no credit card required.
What paid plans are available?
Top Up With 5 Masters costs 7.99 USD as a one-time payment. Unlimited Access costs $139 a year.
Which platforms does it support?
GLOW Mastering is available on the web.
Does it upload audio to a server?
Its local-processing approach uses your computer in the browser without uploading audio files to a backend server.
What files can I upload?
Supported inputs are WAV, MP3, FLAC, AAC, M4A, OGG, WEBM, and AIFF.
What can I export?
WAV exports include Streaming Ready, Cinema & Pro, and Studio Archive settings.
Facts from GLOW Mastering's own pages
- Batch mastering
- Its batch processor can handle up to 10 files and 2GB total, with finished masters downloadable as a ZIP file. · glowmastering.com, 8 Oct 2026
- Genre support
- GLOW offers dedicated EDM profiles for techno, house, psytrance, dubstep, dub, trance, and chillout, and says it also handles hip-hop and rock. · glowmastering.com, 8 Oct 2026
- Input formats
- It accepts WAV, MP3, FLAC, AAC, M4A, OGG, WEBM, and AIFF files. · glowmastering.com, 8 Oct 2026
- Intended users
- The site describes its free plan as a way to try the service and its top-up and unlimited plans as options for occasional and regular releases, respectively. · glowmastering.com, 8 Oct 2026
- Listening and comparison
- Users can upload and listen before downloading and compare the original mix with the mastered version. · glowmastering.com, 8 Oct 2026
- Local processing
- GLOW says it uses your computer's power to master tracks in your browser without uploading audio files to a backend server. · glowmastering.com, 8 Oct 2026
- Mastering features
- The engine includes AI smart detection, tonal and dynamic adjustments, and a multi-speaker processor for devices including phones, headphones, cars, and club systems. · glowmastering.com, 8 Oct 2026
- Output formats
- WAV export options include Streaming Ready (16-bit / 44.1kHz), Cinema & Pro (24-bit / 48kHz), and Studio Archive (24-bit / 96kHz). · glowmastering.com, 8 Oct 2026
- Payments
- The site says payments are handled securely via Stripe. · glowmastering.com, 8 Oct 2026
- Support
- The site provides a contact support form with fields for name, email, and message. · glowmastering.com, 8 Oct 2026
- What it does
- GLOW Mastering is an AI-powered mastering engine that produces clean, dynamic masters with analogue-studio character. · glowmastering.com, 8 Oct 2026
Where GLOW Mastering stands on Freedom251
- AI Music Mastering Software#15 of 50