A mix starts not with plug-ins but with levels. Before equalizing or compressing, every track should reach every stage of the chain at a sensible volume, and the tracks should be balanced against one another. This work is called gain staging, and even if it seems unnecessary in modern floating-point DAWs, it remains the foundation of a tidy mix.
What gain staging is
Gain staging means controlling the signal level at every point in the chain: track input, input and output of each plug-in, faders, group buses, master bus. The goal is that no stage is too hot, saturating, or too weak, approaching the noise.
"But the DAW works in float"
It is true that inside a floating-point DAW a signal above 0 dBFS is not clipped. Gain staging still matters for three reasons:
- Plug-ins that emulate hardware are designed to work at a reference level. If they receive a signal that is too hot, they saturate or respond differently than intended.
- Compressor and gate thresholds depend on input level: with chaotic levels, settings become unpredictable.
- The master bus and the export must not exceed zero: a mix that is too loud forces you to use heavy limiting.
A reference level
A widespread, practical habit is to bring each track, before the plug-ins, to an average level around -18 dBFS, with peaks between -12 and -6 dBFS. Many plug-ins emulating analog gear treat this region as their nominal level.
The simplest way is to use a gain plug-in, or the clip gain control, at the start of the chain, leaving the faders at their neutral position.
Fader and gain: two different roles
- Input gain brings the signal to the right level for processing.
- The fader balances the track against the others in the mix.
If you have to pull a fader down by 20 dB to balance a track, the input signal was probably too hot. Working with faders near zero gives more precision, because the fader scale is finer in that region.
Balancing levels: the static method
Before any effects, it pays to build a static mix, using only faders and panning.
- Start with the most important element: the voice in a podcast, the vocal or the drums in a song.
- Set its level so the master bus peaks around -10 dBFS: you will leave room for the other elements.
- Add the other elements one at a time, asking for each one "how present should it be relative to the main one?".
- Listen at low volume: at low levels imbalances between tracks are much easier to notice.
- Take a break and listen again: ears get used to things quickly.
A good static mix often solves half the problems you thought you would need to fix with EQ.
Group buses
Grouping similar tracks into a bus simplifies the work: all the voices of a podcast, all the drum elements, all the backing vocals. With a single fader you adjust the whole group, and you can apply shared processing, such as light compression that "glues" the elements together.
Gain staging applies to buses too: the sum of many tracks produces a higher level than each of them. If the bus gets too hot, lower the tracks or use an input gain on the bus.
Plug-in order
There is no single order, but a common sequence on a vocal track is:
Gain → Cleanup (high-pass, de-noise) → Corrective EQ
→ Compressor → De-esser → Tonal EQ → Effect sends
The principle is simple: first remove what is disturbing, then control the dynamics, finally refine the tone. After each plug-in, check that the output level is similar to the input: many plug-ins have an output control for exactly this purpose.
The master bus
On the master bus it is wise to leave headroom: peaks around -6 dBFS before any final limiter. This space lets you manage loudness and true peak in the final stage without squashing the mix.
In my work I always keep a meter on the master throughout mixing. If the level keeps creeping up session after session, it is a sign that I am turning everything up instead of balancing.
In short
- Gain staging controls the level at every point in the mix chain.
- Even in floating point it still matters for plug-ins, thresholds and the master bus.
- Gain prepares the signal; the fader balances it against the other tracks.
- Build a static mix first with only faders and panning, listening at low volume.
- Leave headroom on the master to manage loudness and peaks at the end.
