FL Studio Mix Bus Chain: The Stock Plugins to Mix Into, With Settings (and What to Pull Off the Master)

The short answer: an FL Studio mix bus chain is two stock plugins and a meter on the Master mixer track, in this order: Fruity Parametric EQ 2 for a gentle subsonic cut and an input trim, Fruity Limiter switched to its COMP tab at 2:1 with 1 to 2 dB of gain reduction, and a meter last. Put it on early and mix into it. Take the default template's limiter off, leave Soft Clipper, Maximus and Soundgoodizer for the mastering stage, and export with peaks around -6 to -3 dBFS. A mix bus chain glues the mix while you're still making decisions. It isn't a mastering chain, and it shouldn't try to make the track loud.

Mixing into a light bus chain, then mastering as a separate step, is how I work on my own releases (Sony, Universal, Ultra, Dim Mak, 50M+ streams). This is the stock FL Studio version; the Ableton mix bus chain, the Logic Pro mix bus chain and the Pro Tools mix bus chain do the same job in those DAWs. There's no FL Studio build of my mastering chain, but two of them run inside FL, disclosed at the end.

First: the limiter that's already there

FL Studio's default template (called Basic with Limiter in recent versions) loads Fruity Limiter on the Master track, and in older versions its default settings also added several dB of gain. It's there so new projects don't clip. It's also why so many FL mixes sound fine in the session and fall apart in mastering: you've been balancing every fader into a limiter.

Remove it, or start from a template without it (you can set the startup template in FL's general settings), before you build the chain below. If a project is already mixed into it, bypass it and re-check the balance before you export. Template names and defaults change between versions, so open the Master track and see what's actually loaded.

Mix bus chain vs mastering chain

Both chains can live on the Master track, but they have different jobs at different times.

If you've read what a mastering chain is, this is its little sibling: the same tools, at a fraction of the amount, doing a different job.

One FL detail: on every mixer track, the Master included, audio passes through the effect slots first, then the track's built-in EQ, stereo separation, volume and pan. The fader comes after your plugins, so pulling the Master fader down doesn't change what the bus compressor hears.

The chain, in order (settings chart)

Why no saturation slot, when the Ableton and Logic versions have one? Those DAWs ship gentle bus saturators (Saturator, ChromaGlow). FL's stock distortion plugins lean toward obvious character, and Fruity Blood Overdrive, for example, filters and clips inside its own signal path, which isn't what a whole mix needs. Add density on individual tracks, or leave it for the mastering stage. Image-Line also advises leaving each effect slot's mix knob at 100%, since blending a plugin with latency against the dry signal can cause phasing, so don't use it as a shortcut to parallel saturation on the Master.

These plugins ship with FL Studio; a few extras mentioned below (Maximus, Transient Processor) depend on your edition. Exact control labels can differ between FL versions, so treat the plugin window and Image-Line's manual as the authority. If you'd rather use a single-purpose compressor, Fruity Compressor at 2:1 with similar times and a Soft or Vintage knee type does the same job.

How to set it up

1. Clear the Master. Remove the template's Fruity Limiter so nothing is limiting while you balance.
2. Get a static balance first. Faders and pans only, no bus processing. If the song doesn't work as a rough balance, a bus chain won't save it. The order of operations is in how to mix a song.
3. Gain stage the channels. Pull channel levels down so the Master peaks around -6 dBFS with everything playing. Gain staging explains why.
4. Load the plugins in order on the Master. Parametric EQ 2, Fruity Limiter switched to COMP, then the meter. Right-click the Master track and use File > Save mixer track state as to save the chain as an .fst file, so every mix starts here.
5. Set the compressor on the loudest section. Loop the chorus or drop, pull THRESH down to 1 to 2 dB of reduction on the envelope display, match GAIN to the bypassed level, and toggle the slot on and off to compare. If you can clearly hear it working, back off.
6. Mix into it. From here on, every fader move happens through the glue, so the balance you make is the balance you'll hear after the bus compressor. This is the reason it goes on early: adding bus compression at the end changes a balance you already signed off.
7. Check mono and references regularly. Turn the Master's stereo separation fully clockwise, listen, and return it to center. Compare against a commercial track at matched loudness; how to use reference tracks shows the loudness-matching step.

What not to put on the mix bus

• The default Fruity Limiter, or any limiter. A limiter on the Master makes everything sound louder and better for a minute and hides balance problems. If you want to preview loudness, put one last and bypass it before you export.
• Fruity Soft Clipper. It's a clipper, and clipping belongs at the mastering stage. How it compares with other clippers is in the best clipper plugins.
• Maximus and Soundgoodizer. Multiband maximizers flatten the dynamics mastering needs. On the whole mix while you're still balancing, they make every decision for you.
• Emphasis and Emphasizer. Newer FL versions include these loudness tools; Image-Line describes Emphasis as a multi-stage mastering compressor and limiter. Mastering stage, not mix bus.
• Big EQ moves. A 3 dB high shelf on the Master is a sign the hats, vocal, or synths need EQ on their own tracks.
• Width boosts. Widening the whole mix with Stereo Shaper or Stereo Enhancer makes the stereo image the last thing you can fix, and it's the first thing to collapse on club and phone speakers.

Group buses do the heavy lifting

A light mix bus chain works because most of the control happens a level down. Route the drums to their own mixer track and give it a Fruity Limiter in COMP mode (often a few dB more reduction than the Master), add punch with Transient Processor if your edition includes it (compared in the best transient shaper plugins), and run the lead through a proper vocal chain (the FL Studio vocal chain uses stock plugins too). That leaves the Master with only one job: gluing parts that already work. The 808 gets the same treatment on its own track: the FL Studio 808 chain tunes, saturates, ducks and clips it with stock plugins.

Exporting the mix for mastering

Open the export window (File > Export > Wave file), choose WAV at 24-bit or 32-bit float at the project's sample rate, and leave dither off; what dithering is explains why it only happens once, on the final master. Keep Enable master effects on if you mixed into the chain, since the EQ and glue are part of the sound you approved, but make sure no limiter, Soft Clipper or loudness tool is left on the Master, and that the stereo separation knob is back at center. Peaks should land around -6 to -3 dBFS. If your mastering engineer asks for no master bus processing at all (my own stereo mastering intake does), bounce a version with the chain bypassed too. The full checklist is in how to prep a mix for mastering, and what is headroom explains the numbers.

Then the master

Once the mix is bounced, the mastering chain takes over in a fresh project or on the bounced file: cleanup EQ, glue, peak control, width and a limiter, each doing a small job. The FL Studio mastering chain walks through every stage with stock plugins, and the free Youlean Loudness Meter reads the result.

There's no FL Studio stock build of my own mastering chain. Two of my chains run inside FL instead: the Ultimate Master Chain for Ozone loads in any DAW that runs Ozone 9, 10, 11 or 12 (Standard or Advanced) as a plugin, FL included, and the Ultimate Master Chain for Waves runs in FL through Waves StudioRack. I'm biased; mix into a light bus chain first with any tools, and any mastering chain will have more to work with.

Quick answers

What should be on the mix bus in FL Studio? On the Master track: Fruity Parametric EQ 2 with a 20 to 30 Hz low cut, Fruity Limiter in COMP mode at 2:1 with 1 to 2 dB of reduction, and a meter last. No limiting, no clipping, no loudness tools.

Should I remove the Fruity Limiter on the master in FL Studio? Yes, while you mix. The default template loads it so new projects don't clip, but mixing into a limiter hides balance problems and eats the headroom mastering needs. Gain stage so the Master peaks around -6 dBFS instead.

What are good Fruity Limiter compressor settings for the mix bus? COMP tab, ratio 2:1, knee toward soft, attack 10 to 30 ms, release 100 to 300 ms, threshold set for 1 to 2 dB of reduction on the loudest section, gain matched to bypass, and the ceiling at 0 dB.

How do I check my mix in mono in FL Studio? Turn the Master track's stereo separation knob fully clockwise to merge left and right to mono, listen for anything that disappears, then return the knob to center before you export.