Practical Mixing
How to use a vocal bus in REAPER
Published August 14, 2026 · Updated August 14, 2026
REAPER has no separate “bus” track type. Any track can be a bus. To control several vocal tracks with one fader and one set of plugins, put them in a folder track, which sums them into a submix bus. To share one reverb or delay across those vocals, add a send to a separate effects track, which acts as an aux bus. Both use stock REAPER features, so there is nothing to buy.
If you have a lead vocal plus doubles, harmonies, or a few backing takes, you quickly run into the same problem: you want to raise or lower all of them at once, and you want them to share the same reverb so they sound like one performance. Doing that per track is slow and it makes the voices drift apart. A bus solves both.
The confusing part is that REAPER does not give you a button labelled “new bus.” People coming from other DAWs look for it and cannot find it. In REAPER a bus is just a normal track that other tracks feed into. Once that clicks, routing gets a lot simpler.
Two kinds of vocal bus (they do different jobs)
The word “bus” covers two setups that solve different problems. Decide which one you need before you start clicking.
- A submix bus collects your vocal tracks so their audio flows through one track. You get a single fader for the whole group, and any plugin you add there processes all of them together. In REAPER this is a folder track.
- A send bus (aux bus) is an effects track that several vocals feed a copy of their signal into, usually for shared reverb or delay. The dry vocals still go to the master on their own; the bus adds the wet effect on top. In REAPER this is a normal track fed by sends.
Most vocal mixes use both: a folder to control the group, and one or two send buses for shared effects.
Method 1: build a submix bus with a folder track
Use this when you want one fader and shared processing for a group of vocals.
Put the vocals together and add a parent
Line your vocal tracks up next to each other. Insert a new empty track directly above them and name it something clear like VOX BUS.
Turn the top track into a folder
Each track has a small folder button in its panel. Click it on the VOX BUS track so it becomes a folder parent. The vocal tracks below it indent to the right, which means they are now inside the folder and their audio sums through the parent.
Close the folder at the last vocal
If a track that should stay outside got pulled in, click the folder button on the last vocal track to mark it as the end of the folder. The button cycles a track between normal, folder start, and folder end, so a click or two sorts it out.
Mix with the parent fader
Now the VOX BUS fader moves every vocal at once, and its balance against the rest of the mix stays intact. Add plugins to the parent to treat the whole group.
A folder parent is not just an organizing label. REAPER routes the child tracks’ audio through it, so the parent is a real summing point. That is exactly what a submix bus is in any other DAW.
What to put on the vocal bus
Keep it light. The point of bus processing is to treat the vocals as one unit, not to fix individual tracks. Good starting candidates, all optional and all taste-dependent:
- A gentle compressor for glue. A small amount of bus compression can make stacked vocals feel like one voice. Start very mild, roughly
1.5:1to2:1with only1–2 dBof gain reduction on the loudest parts, and bypass it to check you are helping. If you are new to ReaComp, the settings walk-through in vocal compression settings for beginners in REAPER applies here too. - A broad EQ move that applies to all of them. If the whole stack shares the same buildup or dullness, a small cut or shelf on the bus fixes it once instead of per track. The bands are the same ones covered in the vocal EQ cheat sheet for REAPER.
Do the per-voice work first. Tuning, timing, harsh spots, and a track that was recorded louder than the others are individual problems and belong on the individual tracks, not the bus.
Method 2: build a send bus for shared reverb or delay
Use this when you want the same reverb or delay on several vocals without loading a separate plugin on each one. This keeps the effect consistent and lets you balance all of it with one fader.
Make an effects track
Insert a new track and name it for its job, like VOX REVERB or VOX DELAY. Add one reverb (ReaVerbate or ReaVerb) or one delay (ReaDelay) to it and set it fully wet, since the dry sound is already coming from the vocal tracks.
Send the vocals to it
Open a vocal track’s routing (the Route button, or the I/O button in the mixer). Under Sends, add the VOX REVERB track as the destination. Repeat for each vocal you want in that reverb. If you built the folder in Method 1, you can send from the folder parent once instead.
Leave the sends post-fader
New sends in REAPER are post-fader by default, which means the effect level follows the track fader. That is what you usually want for reverb and delay, so pulling a vocal down in the mix pulls its reverb down with it. Only switch to pre-fader if you want the effect level to stay put regardless of the fader.
Balance with the effects fader
Raise the send amounts or the VOX REVERB fader until the space sits under the vocals. One fader now controls how wet the whole group is.
The Master/Parent send checkbox controls whether a track reaches the master. Leave it on for your VOX REVERB or VOX DELAY track, otherwise you will not hear the effect. You only turn it off on a source track that should reach the mix through a bus alone.
For the actual reverb and delay values, the starting ranges in vocal reverb settings that sound good in REAPER and how to add delay to vocals in REAPER plug straight into the effects track you just built.
| What you want | Which bus | How |
|---|---|---|
| One fader for all the vocals | Submix bus | Folder track, mix with the parent fader |
| The same reverb or delay on several vocals | Send bus | Effects track fed by post-fader sends |
| Glue a stack into one voice | Submix bus | Gentle compressor on the folder parent |
| Fix a shared tone problem once | Submix bus | Broad EQ move on the folder parent |
What a vocal bus will not do
A bus organizes and shares processing. It does not repair the tracks feeding it.
- It will not fix an individual bad take. Tuning, timing, and one voice that is too loud or too quiet are per-track jobs. Sort them before the bus, not on it.
- Bus processing applies to everything at once, so it cannot solve a problem that lives in only one of the tracks. Treating one harsh vocal with a bus de-esser also dulls the ones that were fine.
- It does not add glue by itself. Bus compression can help stacked vocals cohere, but only with sensible levels underneath. If the balance is wrong, no bus plugin rescues it.
- A folder does not change how the tracks were recorded. If the source tone is off, use per-track EQ first, for example the moves in the REAPER vocal chain with stock plugins.
If the routing is not behaving
- A track is silent after folding. Check that its Master/Parent send is still on. If you turned it off while experimenting, it now only reaches the mix through a send that may not exist.
- The reverb is too loud on quiet parts. Your send is probably pre-fader. Switch it to post-fader so the effect tracks the vocal level.
- The wrong tracks are in the folder. Click the folder button on the last track that should be inside, to mark the folder end. Tracks below it drop back out.
- The group is clipping the bus. Summing several vocals adds level. Pull the parent fader down, or trim the individual tracks, until the bus meter has headroom again.
In REAPER a bus is just a track that other tracks feed. Put your vocals in a folder for one-fader control and shared processing, and add a send to an effects track when you want one reverb or delay across the group. Do the per-voice fixes on the individual tracks and keep the bus for moves that belong to the whole stack.
Set up a single vocal first
The free StudioRescue vocal chain sets REAPER’s stock plugins on one vocal track, which is the per-voice tone work you do before routing several tracks into a bus. Stock plugins only, nothing to buy.
Get the free vocal chainSources
- Cockos, REAPER User Guide (current version 7.78, released July 18, 2026) - folder tracks as submixes, track routing, sends and receives, and the Master/Parent send control. reaper.fm/userguide
- Cockos, “REAPER | Download” - current REAPER release listing, confirming 7.78 as the version available on the publication date. reaper.fm/download
- Cockos, “ReaPlugs” - the bundled ReaComp, ReaEQ, ReaVerbate, ReaVerb, and ReaDelay plugins used on the buses above. reaper.fm/reaplugs