Built by audio engineers, our AI mastering applies signal processing that's tailored to your track - ensuring it sounds its best.
You can try RoEx Mastering for free and preview your result, before you pay to download.
AI mastering is the final stage before release: it balances tone, shapes dynamics, refines stereo image, and sets loudness to platform-friendly targets (e.g., −9 to −14 LUFS). RoEx delivers a transparent master that translates across speakers, headphones, and streaming services.
Consistent loudness without true-peak overs.
Cohesive, clear tonality that travels across devices.
Fast preview → pay on download.
How much control do you get?
You choose how loud your master should be: Streaming, Optimal or Loud. Or upload a reference track and RoEx matches its tone, dynamics, stereo width and loudness instead. Reference Match is part of Automix Pro. Either way, you can compare before and after before you download anything.
How It Works
Upload WAV/FLAC/MP3 (44.1–48 kHz).
Choose targets — loudness ~(−9/−11/−14 LUFS) & genre profile (Electronic/Hip-Hop/Rock/Acoustic/Pop/Orchestral).
Analyse tonal balance, dynamics, stereo field, true-peak headroom.
Process with context-aware EQ, multiband dynamics, stereo optimisation, loudness/true-peak limiting.
A/B compare & tweak, then download WAV/FLAC/MP3.
Optional (Pro): Reference Match aligns tone, dynamics, stereo image, and loudness to your chosen track.
Genre-Aware Settings
Our audio engine adjusts mastering style based on the musical genre - because techno and folk don’t sound the same.
Loudness Flexibility
In Automix you can choose between three loudness settings: Streaming, Optimal or Loud. If you would rather match a specific sound, Reference Match in Automix Pro lets you master to a track you admire instead.
Tailored Processing
Behind every mastered track is a series of measured adjustments: EQ, dynamic shaping, stereo width, loudness normalisation, and peak limiting. This processing is made with intention, not guesswork.
Reference Matching
With Automix Pro, you can match your master to the sonic profile of a track you admire. Our Reference Match feature intelligently aligns your audio’s tone, dynamic range, stereo image, and loudness to your chosen reference track.
Batch Mastering for EPs and albums
Mastering a full release? Select your mixes in Automix, click Batch Master and choose a setting. Every track is mastered in one go with the same setting, so the whole release is treated consistently.
Free previews before you pay
Hear your master before you spend anything. Previews are unlimited, so you can try different loudness settings and only pay when you are happy to download.
Prefer to master offline?
Automix Desktop (Beta) runs the full mastering workflow locally on your Mac or Windows computer - no uploads, no internet required, 2-5x faster than the web. Included with Automix Pro. Download here.
We never train on your audio. Ownership stays with you.
Files are processed privately; you control downloads and deletion.
A quick, honest comparison so visitors can choose the right mastering path for their project.
RoEx AI Mastering - you want fast, transparent results with control over loudness and optional reference match, plus A/B before you pay.
Typical AI Mastering - you need quick preview or rough master and don't require LUFS/reference control.
Human Mastering - you want iterative, aesthetic direction, album sequencing, stem level tweak, or analog colouration.
Input: WAV/FLAC/MP3, stereo, 44.1–48 kHz, 16/24-bit (internally processed in float).
Output: WAV, FLAC, MP3
Processing: Context-aware EQ, multiband compression, stereo field imaging, loudness normalisation, true-peak limiting
Delivery: Instant download; masters remain in your account library
Free preview before download.
Pay-per-master or credits (see Pricing)
Business usage allowed; full rights retained by you
Got Questions?
Frequently asked
questions
Does RoEx train on my music?
What loudness should I choose? (-9 to -14 LUFS)
Will mastering change my mix balance?
Can I match a reference track?
What file formats can I upload for mastering?
Is human mastering still useful?
Is RoEx online mastering or software I install?
Can I master a whole EP or album at once?
Linnea Sundberg / UnitedMasters
Head of Operations, VP Corporate Development & Business Development
Our Mastering Engine was built by audio engineers, backed by pioneering research from Queen Mary University of London. Unlike tools that rely on presets or black-box models, RoEx takes a fundamentally different approach:
Manual training by audio engineers to emulate real-world mastering workflows.
Measurements over assumptions: We analyse your track’s frequency balance, dynamics, and stereo field before it’s mastered.
Purpose-built DSP systems developed from our academic backgrounds in audio engineering and music technology.
Trusted by music makers who care about their sound: Our technology has been used on over 10 million audio tracks to date.
Learn