Once you have more than a few sounds, you need to control where each one goes. Learning how to route mixer tracks in FL Studio means sending channels to mixer tracks, grouping them into buses, and setting up sends for shared effects. Get this right and mixing becomes far simpler. This guide covers the routing you’ll use on every project.
How the FL Studio Mixer is laid out
Before routing anything, it helps to understand the three kinds of track you’ll work with. The Master is the final track everything reaches before it leaves your speakers or your export. The numbered Insert tracks (Insert 1, Insert 2 and so on) are where individual sounds, groups and effects live. At the bottom of every track sits a routing arrow that decides where that track’s signal flows next. By default every Insert points at the Master, but you can redirect it to any higher-numbered Insert to build buses and effect chains.
The golden rule is that signal flows from lower numbers towards higher numbers and finally into the Master. Keeping that left-to-right flow in mind stops the routing from feeling abstract: you are simply deciding which track hands its audio to which.
Sending a channel to a mixer track
By default, channels in the Channel Rack play through the Master mixer track, which gives you no individual control. To process a sound on its own:
- Open the Mixer and select an empty mixer track (e.g. Insert 1).
- Select the channel in the Channel Rack you want to route.
- At the top of the channel’s settings, set its mixer track number to match — now that channel plays through that mixer track.
Give the track a name and colour. Doing this for every sound gives you a clean, controllable mixer instead of everything piled on the Master.
Grouping tracks into buses
A bus lets you control several tracks at once — for example, all your drums on one fader. If the concept is new to you, our explainer on what a bus is in mixing covers why it matters before you build one. To build one:
- Pick an empty mixer track to act as the bus (call it “Drums”).
- Select each drum track, then click the routing arrow at the bottom of the Drums track to route them into it. They now flow into the bus instead of straight to Master.
- Add compression or EQ on the bus to process the whole group together.
This is the foundation of a tidy mix and makes balancing far quicker. Our EQ and compression fundamentals guide explains what to put on those buses.
One detail that catches people out is that a track can only be routed to one place at a time. When you send your drums into a Drums bus, make sure the individual drum tracks no longer point straight at the Master as well, otherwise you’ll double the level and lose the point of the bus. FL Studio shows the active route as a small triangle in the corner of the destination track, so a quick glance confirms where each signal is actually going.
Sends and returns for shared effects
Rather than putting a reverb on every track, use one reverb on a send track and feed multiple tracks into it:
- Add a reverb (set fully wet) to an empty mixer track — this is your return/send track.
- On each track you want reverb on, click the small send knob/arrow pointing to the reverb track and dial in how much signal to send.
This keeps reverb consistent, saves CPU, and gives you one place to adjust the space — see how to use reverb and delay in a mix for how to set those effects up well. The same principle applies in any DAW, as our cross-DAW guide on sends and returns explains.
Routing for sidechaining
Sidechaining relies on routing one track’s signal to another as a trigger. In the Mixer, select the source (kick), then right-click the routing arrow on the target track (bass) and choose Sidechain to this track. The full workflow is in how to sidechain in FL Studio.
A simple routing order to follow
If you’re not sure where to start, set up the mixer in the same order every time. A predictable structure means you can open any old project and know instantly where each sound lives:
- Route every channel from the Channel Rack to its own Insert track and name it.
- Create group buses for drums, vocals, synths and bass, and route the relevant tracks into them.
- Add one or two send tracks for shared reverb and delay.
- Place any group processing — glue compression, tonal EQ — on the buses, not on the Master.
- Leave the Master clean except for final limiting and metering.
Working in this order keeps decisions at the right stage and stops the Master from doing jobs that belong further upstream. It’s the same thinking behind keeping a tidy session, which our guide on organising a DAW project goes into.
Common routing mistakes to avoid
- Everything on the Master. If you never assign channels to Insert tracks you have no per-sound control and the mix becomes impossible to balance.
- Double routing. Sending a track into a bus while it still feeds the Master directly doubles its level. Route to one destination only.
- Reverb on the wet/dry the wrong way. A send/return reverb should be set fully wet, because the dry signal already reaches the Master through the source track’s own path.
- Unnamed, uncoloured tracks. Thirty grey “Insert” tracks are slow to navigate. Naming and colouring is part of routing, not an afterthought.
- Ignoring levels between stages. Each bus and send adds gain, so it’s easy to clip on the way to the Master if you’re not watching the meters.
Keep your signal flow clean
- One sound per mixer track wherever practical, named and coloured.
- Group related tracks into buses (drums, vocals, synths).
- Use sends for shared effects like reverb and delay.
- Mind your levels at each stage — read gain staging explained so nothing clips on the way to the Master.
Related FL Studio guides
Good routing supports the whole production — see how to arrange a song in FL Studio and the mixing and mastering hub for what to do once your signal flow is sorted. If you also work in Reaper, the same ideas carry over in how to route tracks in Reaper.
Frequently asked questions
Why do all my channels play through the Master in FL Studio?
Channels default to the Master mixer track until you assign them. Set each channel’s mixer track number to an individual insert so you can process it separately, then route groups into buses as needed.
What’s the difference between a bus and a send in FL Studio?
A bus carries the full signal of several tracks so you can process them as a group, replacing their direct path to Master. A send copies a portion of a track’s signal to an effect track (like reverb) while the original still plays through its own path.
How do I route multiple tracks to one fader?
Pick an empty mixer track as the bus, then route each source track into it using the routing arrow at the bottom of the bus track. Adjusting the bus fader then controls all of those tracks at once.
Can one mixer track be routed to two places at once?
A track’s main output goes to a single destination, but you can layer on additional sends alongside it. So a vocal can feed a Vocals bus as its main route while also sending a portion of its signal to a reverb track — the bus carries the full signal, the send carries just the part you dial in.
