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Gain staging is the practice of setting proper signal levels at every stage of the audio chain — from the microphone or instrument input, through your tracks and plugins, across your busses, and out to the stereo master.

It sounds mundane. It is mundane. It's also the single most common reason mixes fall apart before they've started. Without proper levels, everything downstream suffers: plugins distort or behave unpredictably, noise floors rise, headroom disappears, and your mix bus clips before you've even got to the chorus. Get your gain staging right and every other decision — EQ, compression, effects — becomes easier and more predictable.

This guide walks through the full process, stage by stage.

What You'll Need

A DAW (any will do)
Any project with tracks — even a rough demo works
A level meter (most DAWs have one built in; if yours doesn't, there are free options)

FabFilter Pro-L 2

£170

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That's it. No special gear required. Gain staging is a workflow discipline, not an equipment purchase.

Step 1 — Recording Levels

If you're tracking audio into your DAW, aim for peaks between −12 and −6 dBFS. That's it.

There's a persistent myth from the 16-bit era that you need to "record hot" to maximise dynamic range. At 16-bit you had roughly 96 dB to work with, so pushing levels made some sense. At 24-bit you have 144 dB of dynamic range. You will never, ever need all of it. A signal peaking at −12 dBFS in 24-bit still has more usable dynamic range than a maxed-out 16-bit recording.

So leave headroom. A clipped recording is ruined — a quiet one can always be gained up.

Step 2 — Track Levels Before Processing

Before you reach for a single plugin, set your faders so individual tracks peak around −18 to −12 dBFS.

Why −18? Because most plugins — especially those modelled on analogue gear — are designed to operate at this level. Analogue studio equipment runs at a nominal operating level of +4 dBu, which corresponds to roughly −18 dBFS in the digital domain. Feed a plugin-modelled compressor a signal 12 dB hotter than it expects and it won't just compress differently — it'll saturate, distort, and behave in ways the developer never intended.

Use your DAW's channel gain or trim control (not the fader) to bring tracks into this range. The fader stays at unity for now.

Step 3 — Plugin Input/Output

This is where most people get sloppy. Every plugin in your chain changes the signal level — and you need to account for it.

Compressors reduce gain. A compressor pulling 6 dB of gain reduction means your signal is 6 dB quieter coming out. Apply 6 dB of makeup gain to compensate.

EQ boosts add gain. A 3 dB boost at 3 kHz means 3 dB more signal coming out of the plugin. Use the output trim to pull that back.

Saturation and distortion plugins often add significant level. Check the output.

The principle is simple: the signal level going into a plugin should be roughly the same as the level coming out of it (unless you're deliberately changing gain). Watch your meters at every insert point. If the level creeps up by a few dB with each plugin, by the time you've got five plugins on a channel you're 15 dB hotter than where you started — and your mix bus is paying the price.

Step 4 — Bus and Group Levels

Submixes — your drum bus, vocal bus, instrument groups — need the same attention. If your drum bus is clipping before it even hits the mix bus, your gain staging is off somewhere upstream.

Check the input level of each bus. If it's too hot, don't reach for the bus fader — go back to the individual tracks feeding it and bring their levels down. The bus fader, like every other fader, is for mix balance, not gain correction.

A sensible target: bus levels peaking around −12 to −6 dBFS before any bus processing.

Step 5 — Mix Bus and Master

Your stereo bus should peak around −6 to −3 dBFS before any mix bus processing. If you're running a compressor, EQ, or limiter on the mix bus, that's the level you want feeding it.

Why not louder? Two reasons:

Mastering needs headroom. If you're sending your mix to a mastering engineer, they need room to work. A mix peaking at −1 dBFS gives them almost nothing. A mix peaking at −6 dBFS gives them options.
Your own mastering chain needs headroom too. Even if you're mastering yourself, slamming the mix bus before the limiter defeats the purpose.

Leave room. The loudness comes at the mastering stage, not the mixing stage.

Common Mistakes

Recording too hot. The number one gain staging error. Digital clipping on the way in is permanent and destructive. There is no "warmth" to be found at 0 dBFS in a digital system — only flat, harsh distortion. Back off.

Not compensating for plugin gain changes. Every plugin that adds or removes gain shifts the staging for everything after it. A small oversight on one channel multiplied across thirty tracks creates chaos at the mix bus.

Using the fader to "fix" gain. Faders are for mix balance — the relative level of one track against another. If a track is too hot for your plugins, use the channel trim or a gain utility plugin at the top of the insert chain. Pulling the fader down changes the level hitting the mix bus but doesn't fix the level hitting your channel plugins.

Slamming the mix bus. If your stereo output is constantly hitting 0 dBFS and the clip light is flickering, nothing you do on the master will save it. The damage is done before the signal reaches any mix bus processing. Go back upstream.

The −18 dBFS Rule

Most analogue-modelled plugins — and that includes the majority of compressors, EQs, and saturators on the market — are calibrated so that −18 dBFS equals 0 VU. This is the nominal operating level of professional analogue equipment.

Feed these plugins a signal at −18 dBFS and they'll behave as the original hardware would at unity. Push the level significantly above that and you're driving the virtual circuitry harder than intended. Sometimes that sounds good. Usually it just sounds wrong.

It's not a hard rule. Peaks will go above −18 dBFS and that's fine — we're talking about average levels, not peak levels. But as a starting point, −18 dBFS RMS on your tracks is sensible, predictable, and gives you plenty of headroom everywhere else.

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