Free Audio Mastering — Upload a Track, Get a Master
No credit card. No plugins. No expensive studio session. Just upload your mix and Engineer Guy's AI delivers a clean, loud, streaming-ready master in under 60 seconds.
No credit card · No plugins · Works in your browser
Actually Free
Your first master is on us. No trial period that secretly bills you. No watermarks on your file.
Streaming Targets Built In
Automatic -14 LUFS for Spotify. -16 LUFS for Apple Music. -13 LUFS for YouTube. The AI knows the specs.
Know What Was Fixed
Get a plain-English breakdown of what the AI changed and why — so you can improve your mixes over time.
Download Your Master
Get your mastered file as WAV or MP3. Upload straight to your distributor or share the link.
Why Pay for Mastering When You Don't Have To?
Professional mastering used to cost $50 to $300 per song. For independent artists dropping music regularly, that adds up fast. Engineer Guy gives you AI mastering that hits the same technical targets — loudness, dynamic range, stereo width, frequency balance — at no cost for your first track.
What "Free" Actually Means Here
Free means no credit card at signup, no watermark on your files, and no time-limited demo that locks you out. You create a free account, upload your mix, and download the master. That's it. If you want to process multiple tracks, batch upload, or access stem separation, that's the Pro plan at $9/month — but your first session is genuinely free.
What the AI Does to Your Track
The mastering chain runs in three stages. First, analysis: the AI maps the frequency spectrum of your mix, identifies peaks, muddy buildup, and dynamic inconsistencies. Second, correction: multiband compression, surgical EQ, stereo enhancement, and transient shaping are applied where needed. Third, limiting: a final transparent limiter brings the track to the right integrated loudness without squashing the life out of it.
The whole process takes under 60 seconds for a typical 3–5 minute track.
Getting the Best Results from Free Mastering
The quality of your master depends heavily on the quality of your mix going in. A few things to check before uploading: make sure your master bus has no limiting (turn off any limiter on the 2-bus before exporting), leave at least 1–2dB of headroom, and export as a 24-bit WAV if possible. The AI can work with MP3, but lossless is always better.
Ready to hear the difference?
Upload your track and get AI feedback in under 60 seconds.
Frequently Asked Questions
Is the free mastering actually good quality?
Yes. The AI uses the same algorithms as paid online mastering services. The 'free' tier isn't a dumbed-down version — it's the full mastering process on your first track.
What happens after my free track?
You can upload more tracks on the free plan. Pro plan ($9/mo) unlocks batch upload, stem separation, and advanced export formats.
Do I need a DAW or any software?
No software required. Everything runs in your browser. Upload your audio file from your computer or phone.
Can I master beats and instrumentals, not just full songs?
Yes. The AI works on any audio — beats, full mixes, stems, demos, podcasts. It reads the content and adjusts accordingly.
Will the master sound different on different speakers?
It's calibrated to translate well across speakers, headphones, earbuds, and car stereos. The AI targets the same reference standards used by professional mastering engineers.
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