Mixes that sound harsh or crushed often start with levels, not plugins. Gain staging means setting a healthy level at every point in the chain. Aim for an average near -18 dBFS and leave room above it.
This guide sits in our music production section and covers the practical habits behind clean levels.
| Item | Value |
|---|---|
| Digital level that matches 0 VU | About -18 dBFS |
| Typical average level when recording | Around -18 dB |
| Typical recording peaks | Between -12 dB and -6 dB |
| Input level many analog-modeled plugins expect | Around -18 dBFS to -12 dBFS |
| Digital clipping point | Above 0 dBFS |
Figures come from Boris FX and Antelope Audio. They are guidelines that can change, so check the sources before you rely on them.
What gain staging actually is
Hardware and plugins that model analog behavior can respond differently depending on their input level. Gain staging is the habit of managing the signal level at each stage of recording, mixing and mastering so that clarity is kept and distortion or noise is avoided, as Boris FX describes it.
Think of it as a relay race. Each stage hands the next one a signal that is neither too quiet nor too hot.
Three boundaries matter:
- Noise floor: the hiss that hardware adds. Signals too close to it sound dull and grainy once boosted.
- Headroom: the safety zone between your loudest peak and the point where clipping starts.
- Clipping: harsh distortion when the signal exceeds the limit.
Good levels keep your material in the middle of that range, away from both ends.
Why -18 dBFS keeps showing up
The number is borrowed from analog metering. According to Antelope Audio, audio interfaces and digital equipment still use the professional standard of 0 VU to calibrate their equipment, and a signal of 0 VU sent into your interface will read around -18 dBFS on a digital meter.
So the target is not magic. It is the digital spot that matches the level analog gear was designed to run at.
It is also a convenient place for plugins. Boris FX says most analog-modeled plugins are designed to work with an input gain of around -18 dBFS. Fed a level near that, they respond as intended instead of distorting early.
Treat the figure as a guideline, not a law. The real goal is leaving yourself room to work.
Meters measure different things
A VU meter and a digital peak meter answer different questions. Antelope Audio explains that VU meters were designed to show perceived loudness and, because of their mechanical nature, were never able to reflect signal peaks.
In practice a drum hit can look modest on a VU needle while its peak is much higher. Antelope’s example is that if the needle hits -3 VU, the real peak is between +3 VU and +7 VU, which is already at the distortion point.
Digital meters show peaks accurately, but the penalty is harsher. When a signal passes 0 dBFS, the computer chops the waveform and causes unpleasant digital distortion.
Use both views where you can: an average (RMS or VU-style) meter for the body of the sound and a peak meter for safety.
A step-by-step routine
Here is a simple order of work that holds up in most sessions.
- Set the input first. Adjust your interface or preamp gain so the average level sits near -18 dB, then play the loudest section to confirm peaks stay under -6 dB, as Boris FX suggests.
- Trim every track before processing. Use clip gain or a utility plugin at the start of each channel so that the signal reaching your first plugin is at a sensible level.
- Match levels in and out of plugins. If a compressor or EQ makes the track louder, bring it back down so you judge the sound, not the volume.
- Watch groups and buses. Many quiet tracks add up. Lower the sources instead of pulling only the master fader.
- Check the master last. Leave peaks comfortably below full scale so mastering has room.
Boris FX states that this approach gives you enough headroom for mastering, so processing can sum to the master bus without clipping the final output.
Common mistakes and quick fixes
Most level problems come from a handful of habits.
- Pushing the master fader to hide a hot mix. The problem sits upstream. Lower the individual tracks instead.
- Judging loudness by ear while comparing. A louder version nearly always sounds better, so match volumes when you A/B a plugin.
- Ignoring the plugin’s meter. Many plugins have input and output controls. Use them.
- Stacking gain after clipping. Once a fixed-point file has clipped, the lost detail cannot be recovered by turning it down.
- Treating the number as a rule. A bright snare and a soft pad do not need the same peak; aim for sensible averages and clean peaks.
Levels also shape how a track feels over time. When you balance sections in your song arrangement, a chorus that is already near the ceiling leaves no room to grow, so keep earlier sections lower.
The same thinking helps with dynamics tools. Setting up sidechain compression is easier when the kick and bass arrive at similar, sensible levels, because the ducking amount then behaves predictably.
Does it still matter in a modern DAW?
Many modern DAWs process internally in floating point, which gives a huge amount of headroom inside the software. Antelope Audio notes that in the digital realm the dynamic range can be adjusted to whatever value the waveform reaches without digital clipping while you work.
That does not make levels irrelevant. Floating-point processing can preserve levels above full scale, but you still need to prevent overload at converters and when exporting to a fixed-point format.
Outside the software, the converters, hardware inserts and your monitoring still have fixed limits. Plugins that model analog gear also react to their input level, so a signal that is far too hot changes the tone even if nothing clips.
The habit is cheap: set levels once at the start, and you spend less time fixing them later.
A good test is to bypass your processing chain and compare. If the bypassed version is clearly quieter or louder, your gain structure is hiding what the plugins really do. Fix the level difference first, then decide whether the processing helps.
It also pays to save a template. A session with a utility plugin on every channel, a bus layout and a reference meter already in place means you start each project with healthy levels instead of rebuilding them.
Frequently asked questions
What is gain staging in simple terms?
Show answer
It is managing the signal level at each step of the chain, from input to master, so nothing is too quiet, too loud or distorted.
Is -18 dBFS the correct level for every track?
Show answer
No. It is a convention that matches 0 VU on analog gear, and Boris FX describes a range of around -18 dBFS to -12 dBFS for many plugins. Use it as a starting point and adjust by ear.
Where should my peaks sit when recording?
Show answer
Boris FX suggests an average near -18 dB with peaks between -12 dB and -6 dB, leaving room for later processing.
Can I fix a clipped recording by turning it down?
Show answer
Not really. Lowering the volume does not restore the flattened waveform, so it is better to record with enough headroom in the first place.
