How Loud Should Your Mix Be Before Mastering?
Published · by Loopin
A mix should leave meaningful headroom before mastering — not be pushed close to 0 dBFS or already sound loudness-competitive on its own. Mastering needs room to work with, and an over-limited mix takes that room away.
Aim for peaks around -6 dB and below
A common, sensible target is keeping your mix's peaks around −6 dB or lower on the master bus, leaving substantial headroom for the mastering stage to work with, rather than mixing right up against 0 dBFS.
This isn't a strict rule with a hard cutoff, but it's a reliable ballpark — if your mix is regularly hitting close to 0 dBFS with no headroom left, that's worth addressing before mastering, not during it.
Don't put a limiter on your master bus while mixing
A limiter on the master bus during mixing can mask real problems — imbalances, clipping issues, dynamic problems — by squashing everything into an artificially controlled, already-loud sound, making the mix seem more finished and competitive than it structurally is.
Mix without a limiter on the master bus, then let the actual mastering stage — whether manual or automated — handle final loudness and limiting deliberately, with full context of what it's working with.
A quiet mix isn't inherently a problem, but check for a reason
A mix that peaks well below −6 dB isn't a mistake by itself — extra headroom gives mastering more room to work — but if it's unintentionally quiet due to poor gain staging on individual tracks rather than deliberate headroom, that's worth checking, since it can indicate underlying balance issues.
The key distinction is whether the headroom is a deliberate choice or a symptom of gain-staging problems earlier in the mix — the former is fine, the latter is worth investigating.
Trust the mastering stage to bring up the loudness
A well-prepared, appropriately quiet mix will get brought up to a competitive final loudness during mastering — this is exactly what mastering is for, and a mix engineer shouldn't feel pressure to make the mix itself sound loud before it even reaches that stage.
Chasing loudness during mixing, before mastering has even happened, is one of the more common ways a mix ends up with less genuine dynamic range and headroom to work with than it should have.
Check this with a peak meter, not just by ear
Use an actual peak meter on your master bus to confirm your mix's peak levels rather than relying on ear alone — perceived loudness and actual peak level don't always align, especially after extended mixing sessions where your ears have adjusted.
This is a quick, objective check worth doing before considering a mix finished and ready to move to mastering, regardless of how experienced you are with gain staging.
Frequently asked questions
How much headroom should I leave before mastering?
A common target is keeping mix peaks around -6 dB or lower on the master bus, leaving substantial headroom for the mastering stage to work with, rather than mixing right up against 0 dBFS.
Should I put a limiter on my mix bus while mixing?
No. A limiter on the master bus during mixing can mask real problems and make the mix seem more finished than it structurally is. Mix without one and let the mastering stage handle final loudness deliberately.
Is a quiet mix a problem before mastering?
Not inherently -- extra headroom gives mastering more room to work. But if the quietness comes from poor gain staging on individual tracks rather than a deliberate choice, that can indicate underlying balance issues worth checking.