What Comes First, Mixing or Mastering?
Published · updated · by Loopin
The answer is simple: mixing always comes first, mastering comes last. Mixing balances your individual tracks — levels, panning, EQ, compression — into one finished stereo file. Mastering then polishes that whole stereo file: tone, glue, loudness and true-peak. You can’t reverse the order, because mastering works on the finished whole, not the separate parts.
The short answer
Mixing comes first. Mastering comes last. Always, in that order — it’s not a preference or a style choice, it’s how the process works.
Mixing takes your many separate tracks and blends them into a single stereo file. Mastering takes that one finished stereo file and gives it a final polish. You can’t master something that isn’t mixed yet, because there’s no finished file to master.
- 1. Mixing — blend the individual tracks into one stereo file.
- 2. Mastering — polish that finished stereo file as a whole.
- The order never changes.
What mixing does
Mixing is where you work with all the separate parts of your song — the vocal, the drums, the bass, the guitars, the synths — each on its own track. You decide how loud each one is, where it sits left to right, how it’s shaped with EQ, and how its dynamics are controlled with compression.
The goal of mixing is balance: every element in its right place, at the right level, so the song sounds cohesive and clear. When you’re done, you bounce it all down to a single stereo file — the mix.
- Levels — how loud each instrument and vocal sits.
- Panning — where each element sits in the stereo field.
- EQ — shaping each track’s tone so they fit together.
- Compression — controlling each track’s dynamics.
- The output is one finished stereo file.
What mastering does
Mastering starts where mixing ends: with that single finished stereo file. It doesn’t touch individual instruments — they’re already blended together — it treats the whole song as one.
The job of mastering is to polish that whole: balance the overall tone, add a little glue so it feels like one cohesive record, raise it to a sensible loudness (about −14 LUFS) and set a true-peak ceiling (−1 dBTP) so nothing clips. It’s the final step before release.
- Tone — overall tonal balance across the whole song.
- Glue — gentle cohesion so it feels like one record.
- Loudness — to a streaming target of about −14 LUFS.
- True-peak — a −1 dBTP ceiling so peaks stay clean.
Why the order can’t be reversed
The reason is mechanical, not stylistic. Mastering acts on the whole stereo file — it can only affect the song as one thing. It has no access to the individual tracks, because they’ve already been blended into one during mixing.
So there’s nothing to master until mixing is done. You can’t polish a finished stereo file before that file exists. Mixing creates the thing that mastering then refines.
This is why every professional workflow, in every genre, follows the same sequence. Mixing is the stage of choices between parts; mastering is the stage of polish on the sum of those choices — and polish only makes sense once the choices are locked in.
Why mastering can’t fix a bad mix
This follows directly from the order. Because mastering works on the whole and not the parts, it physically can’t reach inside to fix a problem that lives in one track.
If the vocal is buried, the bass is too boomy, or a hi-hat is piercing, those are balance problems between separate tracks — and by mastering time, those tracks are glued into one file. Mastering can nudge the overall tone, but it can’t un-bury a vocal or move one instrument. Fix it in the mix, where the tracks are still separate.
- A buried vocal is a mix problem — the vocal track is too low.
- Boomy bass is a mix problem — the bass track needs EQ.
- A harsh hi-hat is a mix problem — that track needs taming.
- Mastering acts on the whole, so it can’t fix any of these.
The practical takeaway: get the mix right first
Since mastering can’t rescue a bad mix, the smartest thing you can do is invest your effort in the mix. A good mix mastered gently beats a rough mix mastered aggressively every single time.
When your mix is balanced and sounds right on more than one system, then — and only then — bounce it and master it. That order gives mastering the clean, balanced file it needs to do its one job well.
- Spend your energy on the mix — it’s where problems get fixed.
- Check the mix on multiple speakers and in mono before bouncing.
- Only master once the mix sounds right everywhere.
Step by step: mix, then master
Here’s the whole flow in order:
- Mix your individual tracks — set levels, panning, EQ and compression until the balance is right.
- Check the mix in mono and on more than one set of speakers or headphones.
- Take any limiter off the mix bus and bounce a 24-bit WAV with peaks around −6 dB.
- Open Loopin’s free online mastering and drop the finished mix in — it runs in your browser, nothing uploaded.
- The chain polishes the whole file — tone, glue, stereo and loudness to about −14 LUFS at −1 dBTP.
- A/B Original vs Mastered and download the finished WAV.
Finish the order, free
Mix first, master last — that’s the whole rule. Once your mix sounds right, Loopin’s online mastering handles the final step: a real chain with corrective EQ, glue, saturation, stereo processing and loudness targeting to about −14 LUFS with a −1 dBTP ceiling.
It’s free, no signup, no watermark, and nothing you drop in ever leaves your device. Get the mix right, then let mastering do its job.
Frequently asked questions
What comes first, mixing or mastering?
Mixing always comes first, mastering comes last. Mixing blends your individual tracks into one stereo file; mastering then polishes that finished file. The order never changes because mastering needs a completed mix to work on.
Can you master before mixing?
No. Mastering acts on a single finished stereo file, and that file only exists once mixing is done. There’s nothing to master until your separate tracks have been blended together in the mix.
Why can’t mastering fix a bad mix?
Because mastering works on the whole stereo file, not the individual tracks. A buried vocal or boomy bass lives in one track, but by mastering time everything is glued into one, so those problems can only be fixed back in the mix.
What’s the difference between mixing and mastering?
Mixing balances the individual tracks — levels, panning, EQ, compression — into one stereo file. Mastering polishes that finished file as a whole: overall tone, glue, loudness to about −14 LUFS and a −1 dBTP true-peak ceiling.
Do I need to finish mixing before I master?
Yes. Master only once the mix sounds balanced on multiple systems and in mono. A good mix mastered gently beats a rough mix mastered hard, so put your effort into the mix first.