Manage the Mix. Master Your Music Online in Minutes.
AI-Powered, online mastering, tuned for loud music. Get a studio-balanced master in seconds.
No Credit Card Required
Power and dynamics in every master.
Get a master that doesn’t flatten your sound. Our audio engine enhances the intensity of your performance without compromising clarity.
Upload Your Track
Supports both WAV and MP3 formats.
AI Enhances Your Mix
Tailored to boost loudness while maintaining clarity and dynamic balance.
Download & Compare
Receive your professionally mastered track in seconds and hear the difference.
Online mastering that brings out the best in your mix.
Music collaboration that actually makes sense.
Problem
Managing feedback, revisions and collaboration can mean juggling file names, scattered messages and confusing version histories of your master.
Solution
Maastr is the operating system for your studio. Share tracks, manage versions and get feedback in one place.
Online Mastering, Professional Sound
Good Distortion Only
Louder masters that preserve the raw energy of your music without the muddiness.
Online & AI-Powered
Zero learning curve or costly plugins. Just the proven mastering process of producer Jay Maas, executed by AI.
Studio-Quality Sound
Achieve industry-standard audio, perfectly balanced and polished for any platform.
“Maastr.io is one of the best alternatives to human mastering that I’ve come across. The revisions and note collaboration is very useful and forward thinking.”
Beau Burchell
Saosin, Chevelle, Underoath, Senses Fail, Hail the Sun, Boston Manor
"Intuitive. Dependable. Impressive. On Demand. You Can't Lose."
Dan Korneff
My Chemical Romance, Pierce the Veil, Paramore, Motionless In White, A Day to Remember
No Credit Card Required