“The difference between the almost right word and the right word is really a large matter—’tis the difference between the lightning-bug and the lightning.”
Gain is the level going into something, like a preamp, an amp or a plugin, so it changes how hard that stage works and can change the tone. Volume is the level coming out at the end, so it only changes how loud you hear the result. On a mixer, the gain (or trim) knob sets the input and the fader sets the volume.
Gain vs volume sounds like two names for the same thing. It isn’t. One knob can turn a clean guitar into a fuzzy mess while the other just makes it louder, and in a mix that difference can decide whether a sound stays clean or starts to distort. Below you’ll see where each one lives in FL Studio, when gain really changes your sound, and how Max, the founder of Mix Elite, handles gain staging, which is a lot simpler than most guides make it sound.
Table of Contents
Gain vs volume: what’s the difference?
Gain is the level going into a stage, like a preamp, an amp or a plugin, before it does its work. Volume is the level coming out at the very end. Turn up the gain and the stage works harder, which can add drive or more compression; turn up the volume and the sound only gets louder.
Picture a sound passing through a chain of stages: a mic preamp, a few plugins, a mixer fader and finally your speakers. Gain changes the level at the start of a stage, and volume changes it at the very end, after all the work is done.
That’s why they sound different. Turn up the gain on a guitar amp or a distortion plugin and it gets louder and grittier at the same time, because the stage works harder. Turn up the volume and the sound only gets louder. Its character stays exactly the same.
Both are measured in decibels (dB). On a gain knob or a fader, 0 dB means no change. A plus number is a boost and a minus number is a cut.
Is gain the same as volume?
Not quite. In clean digital audio, both just make the signal bigger or smaller, so on their own they can sound alike. The difference is where they sit. Gain changes what the next stage receives, so anything that reacts to level, like a compressor or saturation, behaves differently. Volume comes last, so nothing after it reacts.
Old analog gear made the difference easy to hear. Push its input too hard and it distorted, and leave it too low and you got hiss. You’d hear the problem and fix it right away, without even knowing the term gain staging.
Gain vs volume on a guitar amp
This is where most people first meet the two knobs. On a guitar amp, the gain knob (sometimes called drive) sets how hard the guitar signal hits the preamp, the first stage inside the amp. More gain means more distortion, crunch and sustain. The master volume knob sets how loud the amp plays in the room.
So high gain with low volume gives you a heavy, distorted tone at a level that won’t wake the neighbors. Low gain with high volume gives you a loud, clean tone. Set the gain for the tone you want first, then use the volume for loudness.
Why does a mixer have both gain and volume?
Because they do two different jobs. The gain (or trim) knob at the top of each channel sets how strong the signal comes in, and the fader at the bottom sets how loud that channel plays in the mix. Set the gain once, then balance the mix with the faders.
A microphone puts out a very quiet signal, so the preamp behind the gain knob has to boost it before the mixer can work with it, as Carvin Audio explains. Too little gain and you hear hiss when you turn the sound back up. Too much, especially with the fader pulled low to make up for it, and the input clips.
Where gain and volume live in FL Studio
FL Studio splits those same two jobs between the Channel Rack and the mixer.
Mix Elite’s free 4.5-hour FL Studio course walks through the path every sound takes. It starts in the Channel Rack, with each channel’s volume and pan knobs (1). Then it runs through the mixer track’s effect slots (2) from top to bottom, then the fader (3), and finally the Master track and your headphones.
So in FL Studio terms:
- Channel volume is gain. The knob in the Channel Rack changes the level before your effects, so it changes how hard they work. FL Studio’s manual says to use these knobs when you need control before the effects.
- Plugin gain knobs are gain. An input or gain knob inside a plugin sets the level going into the next part of the chain.
- The mixer fader is volume. FL Studio applies it after the effects, so moving it never changes how your plugins react.
- The Master fader is the final volume of everything you hear and export.
The course sets volume on the channel while producing, because it’s quicker. For balance alone, either one works. The difference only shows up with plugins that react to level.
Plugin gain: Fruity Balance and other gain knobs
Some plugins exist just to change the level. Mix Elite’s gain staging video loads Fruity Balance and turns its Volume knob (1) all the way up, to +5.6 dB. Put a plugin like this in the first effect slot and it works as a gain knob for everything after it. Many plugins also have their own input or output gain, like the GAIN knob in Fruity Limiter you’ll see below.
What does gain do to your sound?
In FL Studio, raising or lowering a sound’s level doesn’t hurt its quality by itself. The mixer works in 32-bit floating point, a number format with so much room that, as the gain staging video shows, you can push a sample far past 0 dB or pull it down to near silence and get it back unharmed. Gain only changes your sound when the next stage reacts to level. There are two big ones:
- Compressors and limiters. They only work on the parts of a sound that go over their threshold, the level where they kick in. If the input is too quiet, a limiter never gets triggered at all.
- Distortion and saturation. The louder the sound going in, the more it distorts. Max says his most common case is a distortion plugin that “starts working with zero percent because the input volume was so loud.”
That’s why more gain into a saturation plugin sounds warmer and grittier, while the same boost on the fader after it only sounds louder. To use that on purpose, see our guide to saturation in a mix.
Makeup gain on a compressor
A compressor turns the loud parts of a sound down, so the whole sound ends up quieter. Makeup gain turns it back up afterwards. In Fruity Limiter switched to COMP mode (2), that’s the GAIN knob (1), which Image-Line’s manual describes as gain after the compression. If the compressor takes off about 3 dB, add about 3 dB of gain to match. Our FL Studio compressor guide covers the threshold and ratio.
Should you adjust gain or volume when mixing?
Use the volume fader for balance: how loud a sound sits next to the others. Use gain, meaning the channel volume or a plugin’s input knob, when you want to change how hard the next plugin works, like making a compressor react, driving a saturator harder or bringing a quiet sound up to a workable level.
A simple test helps. If you only want the sound louder or quieter in the mix, it’s the fader. If you want it to hit a plugin differently, it’s gain.
Why is my song distorting even when I turn the fader down?
Because the distortion happens before the fader. In FL Studio the mixer fader comes after the effects, so if a plugin is overdriven, the recording clipped at the interface, or the Master is in the red, pulling a fader down only makes the distorted sound quieter. Turn the level down before the problem instead.
Check these three places, in this order:
- A plugin driven too hard. Saturation, distortion and amp plugins react to the level going in, so a hot channel can distort even with the plugin’s amount set to zero. Bypass the effects one at a time, from the top slot down, then turn down the channel volume or a gain knob before the one that distorts.
- A clipped recording. If the interface’s LED turned red while you recorded, the distortion is baked into the audio file, and no fader or plugin can undo it. Record the part again with less input gain.
- The Master in the red. Every track adds up on the Master, and your speakers or a normal WAV or MP3 can’t go above 0 dB. Turn the loudest tracks down until the Master meter stays out of the red.
What is gain staging?
Gain staging means setting the level going into each stage of your chain, so every plugin gets a sound it can work with. Max’s definition, from Mix Elite’s free FL Studio course: “gain staging means that we set the proper input volume levels so that we have easy time to apply different effects on the sound.”
With analog gear it also kept noise and distortion away. Too quiet, and the hiss of the gear crept in when you turned the sound back up. Too loud, and the signal clipped, which means the tops of the waveform got chopped off and it sounded harsh and fuzzy.
Does gain staging still matter in FL Studio?
Much less than most guides say. The video below pushes a track over 0 dB (1), routes it into a second mixer track with the routing arrow (3) and turns that one down by 6 dB (2). The clipping is gone, because nothing inside the mixer was ever really clipped. FL Studio’s manual agrees: it’s practically impossible to clip an insert mixer track, and you can safely ignore peaks over 0 dB there.
The video goes even further. It boosts a sample again and again, renders it in 32-bit float and normalizes it, which means turning it up or down until its loudest peak hits 0 dB. It sounds fine. A sample turned down to -94 dB, rendered and normalized, comes back with no added noise. Max’s conclusion: “When you’re using only software plugins, only thing about gain staging is the convenience.”
Convenience still counts, though. A sound at a sensible level is easier to work with. You can see its waveform in your plugins and set a threshold without hunting for it. The Master track and your hardware are different stories, and you’ll find them in the steps below.
How to gain stage in FL Studio, step by step
This is the method from the mixing day of Mix Elite’s free FL Studio course, in three moves:
- Raise the sound’s channel volume in the Channel Rack until its waveform clearly reaches your compressor’s threshold.
- Lower its mixer fader by the same amount, so the balance of your mix stays the same.
- Keep the Master empty while you mix, and export the mix as a 32-bit float WAV.
The course shows it on a pluck, a short, plucky synth sound whose waveform was too low to compress.
Step 1: Turn up the channel volume
Load your compressor or limiter on the sound’s mixer track and look at the waveform. In the course example it barely reaches up (2), so there’s hardly any room to set the threshold. Go to the Channel Rack and turn up that sound’s channel volume knob (1). Now more level goes into the effects.
Step 2: Turn the mixer fader down by the same amount
Then lower the sound’s mixer fader (2) by about the same amount, so it plays just as loud in the mix as before. The waveform now sits much higher in the plugin (1), so the threshold is easy to set.
That’s gain staging in two moves. The sound hits the plugin harder, and the balance of your mix stays the same, because the fader comes after the effects. A gain plugin like Fruity Balance in the first effect slot does the same job as the channel knob.
Step 3: Keep the Master clean and export in 32-bit float
While you mix, keep the Master track empty, with no limiter on it. When the mix is done, export it as a WAV file (1) with the bit depth set to 32Bit float (2). If the track clips at some points, 32-bit float lets you recover everything. The full export settings are in the last step of our guide on how to mix a song, and our guide to mastering in FL Studio takes it from there.
Your speakers can’t play above 0 dB, and neither can a 16-bit or 24-bit WAV or an MP3. Anything over the top gets cut off. So if the Master meter is in the red while you listen, turn things down before you judge the mix by ear, and never send a clipping Master to a normal WAV or MP3 export.
Where does the -18 dBFS rule come from?
You’ll often read that every track should sit around -18 dBFS. dBFS means decibels below full scale, the digital ceiling of 0 dBFS, so -18 dBFS is 18 dB below the very top. The space between your loudest peak and that ceiling is called headroom.
The number comes from the analog days: it gave each piece of gear a strong signal to work with while leaving some headroom, so nothing clipped above 0 dBFS. It’s still a fine habit, and a sound at that level is easy to work with. Inside FL Studio’s mixer, though, it’s a guideline, not a law.
How loud should you record? Setting input gain
Recording is the one place where gain staging isn’t optional, because your audio interface, the box that connects your mic to the computer, is real hardware. Its gain knob sets how hard the mic signal hits the preamp. Set it too high and the recording clips for good. No plugin can undo that.
The test from Mix Elite’s free FL Studio course: shout into the microphone and watch the small LED light on the interface. It should never turn red. If it does, turn the gain down until it stays out of the red, and only then hit record. A slightly quiet recording is easy to turn up later, but a clipped one can’t be fixed.
Gain vs volume mistakes to avoid
- Turning up the mixer fader to make a compressor work. The fader comes after the effects, so the compressor never sees the change. Use the channel volume or a gain knob before it.
- Boosting everything instead of turning things down. Start every mix by turning down what’s too loud, as shown in our guide on how to balance a mix.
- Putting a limiter on the Master while you mix. Keep the Master empty until mastering.
- Panicking about red meters on insert tracks. Inside FL Studio’s mixer, peaks over 0 dB are safe.
- Ignoring red on the Master or on your interface. Those really clip.
- Treating -18 dBFS as a law. It’s a habit from analog gear, not a rule of FL Studio.
Gain vs volume at a glance
Here’s the difference side by side:
| Gain | Volume | |
|---|---|---|
| Where it sits | At the input, before the work | At the output, after the work |
| What it changes | How hard the next stage works | How loud you hear it |
| Changes the tone? | It can | No |
| In FL Studio | Channel volume, plugin gain knobs | Mixer fader, Master fader |
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Frequently asked questions
Is gain the same as volume?
No. Gain is the level going into a stage, like a preamp, an amp or a plugin, so it changes how hard that stage works and can change the tone. Volume is the level at the output, so it only changes how loud you hear the result. In FL Studio, channel volume works like gain and the mixer fader is volume.
Why is my song distorting even when I turn the volume fader down?
Because the distortion happens before the fader. The mixer fader comes after the effects, so an overdriven plugin, a recording that clipped at the interface or a Master in the red stays distorted, just quieter. Turn down the gain before the plugin, record a clipped take again, and keep the Master out of the red.
Should I adjust gain or volume when mixing?
Use the fader for balance, meaning how loud a sound sits next to the others. Use gain, like FL Studio’s channel volume or a plugin’s input knob, when you want a compressor or saturator to react differently. If you only want it louder or quieter in the mix, it’s the fader.
Why does a mixer have both gain and volume?
Because they do different jobs. The gain or trim knob sets how strong the signal comes into the channel, high enough to stay clear of hiss but low enough not to clip. The fader then sets how loud that channel plays in the mix. Set the gain once, then balance with the faders.
Does gain affect sound quality?
Inside FL Studio’s mixer, changing the level doesn’t damage the sound, because it works in 32-bit float. Gain changes the sound only when the next stage reacts to level, like a compressor, a limiter or distortion. On hardware it matters more: too little gain adds noise, and too much clips.
