Audio mastering is the final engineering stage between the approved mix and the files used for release. It works with the complete stereo track, not the individual vocal, drums, guitars or effects inside the session.
A mastering engineer listens to how the mix holds together, how it translates beyond the room where it was made and what the final release requires. The work can involve tonal balance, dynamics, level, sequencing and delivery preparation, but those tools are only useful when they serve the music.
Mastering is not a preset that makes every track sound the same. It is a set of decisions made at the point where the mix becomes the release.
Contents
- The mix should already contain the record
- What can change at the mastering stage
- A fresh set of ears has a practical value
- Mastering and translation
- Mastering for a single and mastering an album
- What mastering does not do
- What files does a mastering engineer need?
- How to know when the mix is ready
- What you receive after mastering
- Questions about audio mastering
The mix should already contain the record
- Mix
- Mastering
- Delivery
By the time a track reaches mastering, the arrangement, performances, edits, effects and relationship between individual elements should be settled.
The mix decides how loud the vocal sits against the band, how the drums feel, where the guitars are placed and how the sections develop. Mastering can influence the complete result, but it does not receive those parts separately.
That distinction is important because mastering is sometimes asked to solve a problem that still belongs inside the mix. If the vocal needs to move in one section, a single instrument is masking another or an edit is wrong, the cleanest answer is usually a mix revision.
What can change at the mastering stage
Mastering can change the way the complete mix feels and translates. A broad tonal adjustment may bring the low end into better proportion, reduce an area that feels hard or help the track retain clarity at different listening levels.
Dynamics and level can also be managed so the track feels finished without losing the contrast that makes it move. The goal is not simply to make the file louder. A quieter verse, a heavy chorus or a deliberately restrained song may need those relationships protected.
For an album or EP, mastering also considers how the tracks sit together. Songs made in different sessions can still belong to one release when their sequence, level and tonal relationships are handled with care.
A fresh set of ears has a practical value
An artist or mixer may have heard the song hundreds of times. That familiarity helps them know the record, but it can also make it harder to judge what a new listener will hear first.
A mastering engineer arrives later in the process with a different room, monitoring system and point of view. The value is not that the engineer knows the song better than the artist. It is that the engineer can hear the approved mix without carrying every decision that led to it.
That fresh perspective becomes more useful when it is connected to the artist’s notes. Tell Rupert what you like, what concerns you and what the release is meant to feel like.
Mastering and translation
- Headphones
- Phones
- Cars
- Speakers
- Soundbars
A mix is created in one listening environment, but the release will be heard through headphones, phones, cars, speakers, soundbars and systems the artist cannot control.
No master can sound identical everywhere. The aim is to make decisions that remain sensible across those changes. A low end that only works in one room, a harsh upper range that becomes tiring or a level that produces encoding distortion can all affect how the record travels.
Translation is not about making the music bland. It is about allowing the character of the mix to survive outside the studio.
Mastering for a single and mastering an album
Single
Album
A single is judged as one complete statement. An album adds relationships between songs.
The loudest track should not automatically set the level for every other track. A quiet song may need space around it. A live track may carry a different texture from a studio recording. The sequence can make the same master feel different depending on what comes before and after it.
Album mastering therefore considers the whole running order as well as each individual song. Vigilante Studio masters albums up to 74 minutes in total and charges the same £50 per-track rate.
What mastering does not do
Mastering does not replace mixing. It cannot independently change the reverb on one vocal, retune a performance, alter one guitar part or repair an edit inside the session.
It also cannot restore information lost through poor recording, clipping or lossy compression. Some damage can be reduced, but a larger export does not recreate the original source.
A responsible mastering engineer should explain those limits. Sending the track back for a mix change is sometimes the best mastering decision available.
What files does a mastering engineer need?
Send the finished mix as a WAV or AIFF file. Vigilante Studio accepts standard 44.1 kHz, 16-bit files and higher-resolution files from 48 to 96 kHz and 24 to 32 bit.
Keep the file at its native sample rate and bit depth. Avoid MP3 as a mastering source and do not upsample a lower-resolution file to make the numbers look larger.
If Apple Digital Master delivery is required, the source must have been genuinely created at 24 bit. Check that before you export.
How to know when the mix is ready
The mix is usually ready when the musical decisions feel settled, the song plays through without an edit or balance problem pulling your attention away, and you can explain any remaining concern without needing to rebuild the production.
Listen at a sensible level and on more than one system. Check the beginning, ending and any quiet transitions. Make sure the version you export is the version you intend to release.
Do not wait for the mix to become perfect in every environment. That is not possible. The useful question is whether the record says what you want it to say and whether the remaining work belongs to the complete stereo file.
What you receive after mastering
The finished delivery depends on the release. Vigilante Studio returns WAV masters by email and makes them available to download from your account. Eligible recordings can also receive an Apple Digital Master version and a CD-quality version at no extra charge.
Albums that need physical replication may also require a DDP, which should be confirmed before the order is placed.
Questions about audio mastering
Is mastering just making a song louder?
No. Level is one part of mastering. The work can also involve tonal balance, dynamics, translation, sequencing and release preparation.
Can I master my own mix?
You can, particularly for a demo or self-contained project. The reason to use another mastering engineer is the independent listening environment, fresh perspective and ability to discuss the release without being inside every earlier decision.
Should every track be mastered to the same loudness?
No. The right relationship depends on the music, sequence and intended impact. A quiet track does not need to lose its purpose simply to match the loudest song.
The final stage should still sound like your record
When the mix is ready, send Rupert the native WAV or AIFF file and explain what matters in the song.
Mixing and mastering and how to know what your track needs
Understand the difference between working inside the multitrack session and working from the finished stereo mix.
Mastering loudness for a music release
Why streaming normalisation does not create one correct loudness target, and why level should remain part of a wider musical decision.
Preparing a music release in Dolby Atmos
What source material, release planning and distributor conversations need to happen before an immersive project begins.