Tone Zone Mastering

AI online mastering — $4.99 per track, no subscription.

No-frills, customizable digital mastering in minutes.

Step 1 — Get started
WAV · AIFF · MP3 · FLAC · M4A
Step 2 — Choose your sound
Classic Mastering
Balanced — Neutral ▾
EQ Matching
No reference loaded ▾
Optimized for streaming and social — -14 LUFS
Process a mix to see frequency curves
Step 3 — Process
Upload a mix to get started
Analyzing frequency content...
Applying EQ shaping...
Compressing dynamics...
Adding warmth and character...
Optimizing for platform...
Finalizing preview...
Please wait while we prepare your preview clip.
Listening to: Original

Tone Zone Mastering is online AI mastering for indie producers. Upload a mix, pick a sound, hear a full preview, and download a Spotify-ready master for $4.99. No subscription, no signup, no monthly fee.

Pay per song, not per month

Most online mastering services charge $15 to $50 a month. Tone Zone is a flat $4.99 per master, paid only when you download the file. Release one song every six months and you don't pay all year for nothing. Release ten in a weekend and you pay for ten.

Tuned for streaming, by default

Every master targets -14 LUFS integrated with -1 dBTP true peak — the universal sweet spot for Spotify, Tidal, YouTube, and Amazon Music. Apple Music's -16 LUFS Sound Check normalization adjusts naturally without re-mastering.

Two ways to dial in your sound

Classic Mastering. Pick a genre-flavored preset — Balanced, Cool and Tight (electronic, hip hop), Warm and Full (rock, indie), or Light and Open (lo-fi, acoustic) — and the AI does the rest.

EQ Matching. Upload a reference track you love and Tone Zone matches your mix's tonal balance to it. Useful for chasing a specific record's vibe or staying consistent across an EP.

Hear it before you pay

Process a full preview clip for free. A/B against the original, watch the spectrum and waveform change in real time, tweak the controls, re-process as many times as you need. You only pay when you download the full WAV. Files are deleted from our servers after download.

Frequently asked questions

How much does Tone Zone Mastering cost?

$4.99 per mastered track. There's no subscription, no signup, and no recurring fee. You can preview the full master for free before you pay.

How does AI mastering work?

Tone Zone analyzes your mix's spectral balance, dynamics, and loudness, then applies EQ, compression, stereo width, warmth, and a true-peak limiter tuned to your chosen preset or reference track. The result is a polished, streaming-ready master in minutes.

What loudness target is used?

-14 LUFS integrated with -1 dBTP true peak — the universal target for Spotify, Tidal, YouTube, and Amazon Music. Apple Music's -16 LUFS Sound Check normalization adjusts accordingly.

What file formats can I upload?

WAV, AIFF, MP3, FLAC, and M4A. Single tracks under 8 minutes.

What happens to my files after mastering?

Uploaded and processed files are deleted from our servers after you download. We don't store your audio.

Do I have to sign up to try it?

No. You can upload a mix, hear a full mastered preview with A/B comparison, and tweak the sound — all without creating an account. Payment information is only collected at the point of download.

Processing your master
Uploading your mix...
0%
Full song processing typically takes 2–4 minutes. Please keep this window open.
·
Tone Zone Digital Mastering
Terms of Service

Effective Date

April 6, 2026

Service

Tone Zone Mastering provides digital audio mastering for single tracks.

Payment

$4.99 per master download, one-time, non-refundable.

Usage

One upload per payment. Files must be a single track under 8 minutes. No batch processing.

Intellectual Property

You retain full ownership of your audio. Tone Zone does not claim any rights to uploaded or processed files.

File Handling

Uploaded and processed files are deleted from our servers after download. We do not store your audio.

Limitation of Liability

Service is provided as-is. Tone Zone Mastering is not liable for any damages arising from use of the service.

Governing Law

State of New York

Contact

hello@tonezonemastering.com

Satisfaction

If you experience any issues with your downloaded file, contact us at hello@tonezonemastering.com and we'll make it right.

Privacy Policy

Effective Date

April 6, 2026

Data Collected

Audio files you upload (deleted after download), and payment information processed by Stripe. We do not store card details.

Email

Your email address is collected by Stripe during payment. We do not use it for marketing without your consent.

Third Parties

Payments are processed by Stripe. We do not sell or share your data with any other third parties.

Cookies

We do not use tracking cookies.

Governing Law

State of New York

Contact

hello@tonezonemastering.com