Practical Mixing

How to add delay to vocals in REAPER (with stock ReaDelay)

By StudioRescue Editorial

Published August 4, 2026

Delay is one of the easiest effects to add to a vocal and one of the easiest to overdo. Done well, it fattens a lead, throws a single word into space, or gives a chorus a sense of size. Done badly, it turns into a wash of echoes that smear the words and push the voice to the back of the mix. The good news is that REAPER already ships with everything you need. ReaDelay is a capable delay, and the whole job comes down to routing it correctly and using less of it than you think.

This guide is about adding delay on purpose as a creative effect. If your recording already sounds echoey because the room reflections got captured in the take, that is a repair problem, not a delay you added, and no delay plugin will remove it.

Delay is not reverb

People mix these up, and choosing the wrong one is the most common reason a vocal effect sounds off. Reverb is hundreds of tiny reflections blurred together into a smooth wash of space, like a room or a hall. Delay is a small number of distinct repeats of the sound, spaced out in time, like a clean echo bouncing back. Reverb suggests a place; delay repeats a word.

Many vocals sound best with a little of each. If you want the smooth ambience instead, or want both, see vocal reverb settings that sound good in REAPER. This page is only about the repeats.

Clean the dry vocal first

Delay copies whatever you feed it. If the dry vocal is muddy or harsh, every repeat is muddy or harsh too, and the problem gets louder in the tail rather than quieter. So set the dry vocal up first: high-pass the rumble, clear any low-mid buildup, and control the level. If the voice still sounds thick or boomy on its own, start with fixing the muddy vocal and come back. Delay is one of the last steps, not a rescue for a rough take.

Use a send, not an insert

The single biggest upgrade for home delay is routing it as a send instead of dropping ReaDelay straight onto the vocal track. A send lets the dry voice stay clear and up front while a separate track carries only the wet repeats underneath it. You control the blend with one knob, and later you can feed other tracks into the same delay. If sends are new to you, the stock REAPER vocal chain guide walks through track routing in more detail.

Set it up step by step in REAPER

Every plugin here ships with REAPER. Add ReaDelay to a new send track, not to the vocal itself.

The three delay sounds you actually want

Almost every vocal delay is one of these three. Pick the effect first, then dial the settings toward it.

1. Slapback (thicken a lead)

A single fast echo that you feel more than hear as a separate repeat. It adds weight and a vintage feel to a lead vocal. Set Length in milliseconds, roughly 80–160 ms, with Feedback at or near zero so there is only one repeat. Keep the send modest. Slapback should thicken the voice, not announce itself.

2. Tempo-synced throw (echo on one word)

A repeat that lands in time with the song, usually thrown on the last word of a line so it echoes into the gap. Set the tap to a musical note value instead of milliseconds so it follows the project tempo. A quarter note gives wide, obvious echoes; an eighth or dotted eighth gives tighter, rhythmic ones. Allow a little Feedback for two or three fading repeats. Sending only the moments you want to echo, rather than the whole vocal, keeps the verses clean.

3. Subtle stereo width

A very short delay used only to spread the vocal slightly across the speakers. Keep the length short and the send low, and check it in mono, because heavy stereo delay can partly cancel when the mix is summed. Use this sparingly on a lead vocal that needs to stay centered.

Starting settings in ReaDelay

These are starting points, not fixed presets. Your tempo, the arrangement, and the voice all change what works, so set these and then adjust by ear.

Getting the repeats in time with the song

If a delay sounds sloppy, it is usually fighting the tempo. Switching the tap from a length in milliseconds to a musical note value tells ReaDelay to follow the project tempo, so the echoes fall on the beat instead of between beats. As long as your project tempo matches the song, a note-based delay stays locked in time even if the song speeds up or slows down. Milliseconds are the right choice only for slapback, where you want a fixed short gap that does not care about the beat.

Fixing the three common problems

1. The vocal got louder when I added delay. The delay track is passing the dry signal through as well as the echoes. Pull Dry all the way down on the delay track so it outputs only the wet repeats, and blend with the send level instead.
2. The repeats sound washy and muddy. Too much feedback, too little filtering, or both. Lower Feedback to one or two repeats, then high-pass and low-pass the taps so the echoes are darker and thinner than the dry voice.
3. The echoes sound out of time. You are on a millisecond length that does not match the tempo. Switch the tap to a musical note value so it locks to the project tempo, and confirm the project tempo actually matches the song.

What delay will not do

Delay is a creative effect, not a repair tool.

• It will not fix timing or pitch problems in the performance. If anything, extra repeats make a flat or late note more obvious, not less.
• It will not remove room echo or reverb already baked into the recording. That is a separate repair job, and adding more echoes on top only makes it worse.
• It will not make a thin or dull vocal sound full. Delay repeats the tone you feed it, so tone problems belong to EQ, not delay.
• If the repeats carry sharp “s” sounds, the delay is echoing sibilance. De-ess the vocal before the send rather than fighting it in the delay. See how to de-ess vocals in REAPER.