Online Mastering
Mastering from a Billboard-charting engineer ranked in the top 1% worldwide by Muso.ai, with 490+ verified credits.
From $70 per song, 2–4 day turnaround, Apple Digital Masters certified.
What is Online Mastering?
Online mastering is the final step that transforms your mix into a release-ready track. It goes beyond EQ, compression, and loudness — it’s about creating balance, depth, and polish so your music connects with listeners on every platform.
At the helm is mastering engineer Matty Harris, whose experience with major artists and independent musicians ensures your music is treated with the same care as top-charting records. Matty works with you directly to refine your unique sound and make sure your tracks stand out worldwide.
Our online mastering suite blends the best of both worlds: the warmth of analog hardware from Bettermaker and Avalon, combined with the precision of cutting-edge digital tools. The result is a master that’s loud, clear, and ready for Spotify, Apple Music, and beyond.
What’s Included
Professional mastering to make your mix sound polished and radio-ready
Analog Mastering Chain
Your mix runs through professional analog mastering gear for warmth, punch, and that polished sound you hear on major label releases.
EQ & Compression
Precise tonal balancing and dynamic control to ensure your track translates perfectly across all playback systems.
Stereo Enhancement
Professional stereo widening techniques to create depth and dimension without losing mono compatibility.
Loudness Optimization
Maximized loudness for streaming platforms and radio while maintaining dynamics and avoiding distortion.
Apple Digital Masters
Certified Apple Digital Masters delivery for maximum quality on Apple Music and iTunes.
Multiple Format Delivery
Receive your master as a .WAV file, optimized for streaming platforms.
How Online Mastering Works
Simple 3-step workflow from upload to final master
Purchase & Upload
Choose your mastering package and upload your final mix in WAV or AIFF format. Send files at the same bit depth and sample rate as your original mix.
We Master Your Track
Matty personally masters your song using professional analog gear and precision digital tools. Typical turnaround: 2-4 business days.
Review & Delivery
Listen to your master and request any tweaks. Mastering comes with 3 rounds of revisions, though most clients only need 1.
Online Mastering Services
Every project has unique needs, and we offer tailored mastering packages to match. Whether you need Stereo Mastering, Stem Mastering, Vinyl Mastering, or an Apple Digital Master, we’ve got you covered. Reach out today to discuss your project and take advantage of exclusive album discounts on our online mastering services.
Stereo Mastering
Our most popular online mastering service. Stereo mastering gives your track the final polish it needs to sound professional and competitive. We’ll enhance clarity, balance, and loudness so your music translates perfectly on Spotify, Apple Music, radio, and every playback system.
Stem Mastering
Stem Mastering offers more control by working with grouped tracks such as drums, bass, vocals, and instruments. This allows us to fine-tune details — like tightening the low end or bringing vocals forward — while still delivering a cohesive, professional master. It’s the ideal option if you want extra precision and flexibility.
Apple Digital Masters
As an Apple Certified Mastering Studio, we deliver Apple Digital Masters that meet the highest standards for release on Apple Music. Your music will be prepared to Apple’s exact specifications, ensuring pristine sound quality and optimal streaming performance. Perfect for artists who want the best possible presentation on Apple platforms.
Vinyl Mastering
Vinyl requires a special touch. Our vinyl mastering service ensures your songs are prepared for the unique demands of vinyl pressings. We’ll optimize your tracks for warmth, depth, and dynamic impact, so your record not only sounds great but feels timeless on turntables everywhere.
Hear The Difference
Listen to before & after examples of our mastering work
Apple Music
What Artists Are Saying
Real feedback from musicians who’ve worked with us
TT5BR Stereo Mastering client
“If you’re looking for big sounding masters but also great service, look no further, Matty is your guy. Very communicative and easy to work with. Highly recommended!”
Peter Billeqvist
Producer & Songwriter
“I have never before worked with a more professional studio engineer than Matty!”
Christian Rossi Stereo Mastering client
“I’ve struggled to get elevate my mixes in the mastering stage without emptying my bank account but that’s changed since going to Matty. I’ll be using him moving forward as he not only delivers 10x over from a quality perspective but he also is reliable and easy to communicate with.”
isaiah woo Stereo Mastering client
“Matty is great! ive been working with him for about 2 years now, the master comes back sopunding perfect every time. Truworthy and time reliable for industry sound mastering.”
Recent Masters
Projects mastered
Cousin Stizz
Mastered multiple releases.
Cuco
Mastered tracks from Fantasy Gateway (Interscope, 2022)
ericdoa
Mastered “fantasize”.
🎁 First-Time Client Special
Get UNLIMITED REVISIONS FREE on any package! Use code FIRSTMIX at checkout
Mastering Packages
Choose the mastering service that fits your needs
Stereo Mastering
$70
per song
✓ Analog EQ and Compression
✓ Stereo Widening
✓ Bass Enhancement
✓ Loudness Maximization
✓ Apple Digital Masters
✓ Multiple Format Delivery
✓ 3 Revisions
✓ 2-4 Day Turnaround
Stem Mastering
$110
per song
✓ 2-5 Track Stem Mastering
✓ Analog EQ and Compression
✓ Stereo Widening
✓ Bass Enhancement
✓ Loudness Maximization
✓ Apple Digital Masters
✓ Multiple Format Delivery
✓ 3 Revisions
✓ 2-4 Day Turnaround
Need Mixing and Mastering? Click Here
Frequently Asked Questions
What’s the difference between stereo and stem mastering?
Stereo mastering works with your final mix as one stereo file. Stem mastering uses 2-5 separate groups (vocals, drums, bass, instruments, etc.) for more precise control during the mastering process.
How should I prepare my mix for mastering?
Export your final mix as a WAV or AIFF file at the same bit depth and sample rate as the mix. Leave about -3 to -6dB of headroom (don’t let it clip or hit 0dB). Remove any limiters or mastering plugins from your master channel. If you were using a limiter, please send a screenshot for reference.
How long does mastering take?
Typical turnaround is 2-4 business days. Revisions are usually completed within 24-48 hours. Need it faster? Contact us about rush service availability.
What genres do you master?
All genres! Matty grew up as a drummer playing rock and jazz, and has spent 20+ years mastering Pop, Rock, Hip Hop, R&B, Country, EDM, Latin, and more. With deep roots in live performance and years working in the Pop and Hip-Hop world, every genre gets the same professional treatment.
Do you offer album discounts?
Yes! Contact us for custom pricing on albums and EPs. We offer significant discounts for multiple songs.
What formats will I receive?
You’ll receive WAV (24-bit, 44.1kHz) All masters are Apple Digital Masters certified for maximum quality on all platforms.