Preparing Your Mix for Mastering
If youβre getting ready to send your song off for mastering, taking a bit of time to prepare your mix properly can make a real difference.
A lot of the issues that get in the way at the mastering stage are completely avoidable. Things like a limiter left on the master bus, not enough headroom, the wrong export settings, or simply forgetting to include notes or references. None of it is especially complicated, but getting these basics right makes the whole process smoother and gives your mastering engineer the best possible file to work with.
This guide covers the best way to prepare your stereo mix for mastering so you can avoid preventable problems and give the track the best chance of coming back sounding polished, powerful, and ready for release.
If youβre not quite sure whether your mix is ready yet, thatβs absolutely fine too. You can always get in touch through the website or send the file over and Iβll happily point you in the right direction.
Why Proper Mastering Prep Matters
Mastering works best when the mix being sent over is clean, well-exported, and free from unnecessary problems.
That means no accidental clipping, no overcooked limiting, no strange export settings, and no missing context. When those things are sorted beforehand, the mastering engineer can spend more time making useful final improvements and less time working around issues that did not need to be there in the first place.
That does not just make life easier for the engineer either. It helps you get a better result at the end.
1. Remove Limiters From the Master Bus
This is probably the biggest one.
If youβve got a limiter on your master bus, take it off before exporting your mix for mastering.
A lot of people put a limiter on while producing or finishing a demo because it makes the track feel louder, fuller, and a bit more exciting. That is completely normal. But when it comes to sending the final mix off for mastering, heavy limiting can reduce dynamics and make it much harder to get the best result later on.
Mastering is the stage where that final loudness and polish gets handled properly, so you do not need to force that part early.
2. Remove Non-Essential Master Bus Processing
The same idea applies to other master bus processing too.
If youβve added things like bus compression, EQ, saturation, stereo enhancement, or clipping purely to make the rough mix feel louder or more impressive while producing, those should usually come off before export as well.
That said, there is an important exception.
If a particular bit of processing is a genuine, deliberate part of the sound, and the mix does not feel right without it, then it may make sense to leave it on. In that situation, the safest option is often to export two versions:
one Processed file
one Unprocessed file
That gives the mastering engineer a clear point of reference and avoids guesswork.
If youβre unsure whether your mix bus chain should stay on, send the track over and Iβll point you in the right direction
3. Leave Enough Headroom
As a general rule, leave at least 3 dB of headroom on your final mix export.
In simple terms, that means the loudest peak of the song should stay below -3 dBFS.
This gives the mastering engineer enough room to work cleanly and helps avoid clipping or other problems. There is no need to push your mix as loud as possible before sending it off. If your track sounds quieter than a commercial release at this stage, that is completely normal.
That is what mastering is for.
Itβs also worth saying that too quiet is not ideal either. You do not want to slam the mix, but you also do not want to export it unnecessarily low in level and waste the available dynamic range. The goal is just a healthy, unclipped mix with sensible room to work.
4. Use the Right Export Settings
For the final export, keep things simple and high quality.
Iβd recommend:
Stereo WAV or AIFF
minimum 44.1 kHz
minimum 16-bit, though 24-bit is preferred
normalisation turned off
If your session was recorded or mixed at a higher sample rate, it is generally best to export at that native sample rate rather than converting it unnecessarily.
And if your DAW gives you the option to normalise the file on export, make sure that is disabled. You do not want the file being automatically level-shifted on the way out.
Once youβve exported your mix, you can upload it here if youβd like me to check it before mastering.
5. Export the Full Track Properly
Make sure you are exporting the full final mix from the very start of the song to the very end.
That includes any fade-outs, reverb tails, delay tails, or anything else that rings out after the last section.
Itβs also worth leaving a tiny bit of silence at the very start of the track, even if itβs only a fraction of a second, so any opening transients donβt get compromised by an automatic fade-in added by your DAW.
It sounds obvious, but this is one of those small things that can get missed surprisingly easily, especially when someone is rushing to send a file over.
6. Label Files Clearly If Youβre Sending More Than One Song
If youβre sending over multiple tracks for an EP or album, make sure everything is labelled clearly.
Something simple like:
Track Number - Artist Name - Track Title
is plenty.
Good labelling makes the whole process cleaner and avoids confusion, especially once there are several songs, mix revisions, rough versions, or alternate exports flying around.
7. Include Your Rough Mix If Needed
In some cases, removing master bus processing can make the clean export feel a bit different from the version youβve been listening to while producing.
If that happens, it can be really helpful to also include your rough mix as a reference. That gives the mastering engineer a better sense of the balance, energy, and overall feel you were working to, and helps show whether any master bus processing was contributing something important to the vibe.
The clean export should still be the main file for mastering, but the rough mix can be useful as an optional point of reference if you feel something has been lost by taking that processing off.
8. Include Notes and Reference Tracks
Itβs also a really good idea to include a small text file or PDF with any useful notes.
That might include:
artist name
track title
any concerns you have
anything you want the master to preserve or emphasise
anything you wanted added, such as fades
You can also send over reference tracks. A YouTube link is absolutely fine if that is easiest.
Try to choose professionally released songs that reflect the sort of tone, loudness, energy, or overall feel youβre aiming for. That kind of context is genuinely useful and helps the mastering engineer better understand what you want the final result to lean towards.
Final Thoughts
Preparing a mix for mastering is not about following a load of rigid rules for the sake of it.
Itβs really just about avoiding obvious problems and making sure the file you send over is clean, sensible, and easy to work with. If you get the basics right, you give your mastering engineer the best chance of delivering something strong, polished, and true to the track.
And if youβre ever unsure, just ask.
Iβd always rather someone sends me a quick question before export than sends over a file thatβs going to create avoidable issues later on.
If youβre looking for professional online mastering, or you want me to check whether your mix is ready to go, you can get in touch through the website or send the file over and Iβll happily have a quick listen.
