How to Use a Delay Pedal — Settings, Timing, and Techniques

Delay is one of the most versatile effects in guitar. Used subtly, it adds depth without being audible as a separate effect. Used rhythmically, it creates the dotted-eighth-note patterns of The Edge or the cascading lead lines of David Gilmour. Used heavily, it creates ambient soundscapes.

Understanding the three main controls — and how they interact — is the foundation.

The Three Controls

1. Delay Time (E, Time, or D.Time)

This controls how long after the dry signal the first repeat occurs, measured in milliseconds (ms).

• 50-100ms: Slapback echo (rockabilly, country, 1950s style)
• 150-250ms: Short rhythmic delay (good for adding depth to lead lines)
• 250-400ms: General purpose delay (the most used range)
• 400-600ms: Long rhythmic delay (suitable for ambient and atmospheric playing)
• 600ms+: Very long delay (ambient, shoegaze, loop-based)

2. Feedback (Regen or Repeat)

This controls how many times the echo repeats. At minimum, you hear one repeat. As you increase feedback, the number of repeats increases. At maximum, the delay self-oscillates — the echoes feed back into themselves and grow louder indefinitely.

• Low (1-2 repeats): Subtle depth; the echo is barely audible
• Medium (3-4 repeats): Audible echo that adds texture without cluttering the playing
• High (5+ repeats): Very audible delay that creates washy, complex textures
• Maximum: Self-oscillation (feedback loop) — useful for ambient noise, difficult to use musically

Rule of thumb: Start with feedback at 20-30% (2-3 repeats) and increase from there.

3. Mix (Level, Blend, or Wet/Dry)

This controls how loud the delayed signal is compared to the original (dry) signal.

• Low (10-20%): The repeat is barely audible; adds ambient depth
• Medium (25-40%): The repeat is audible; adds clear rhythmic or harmonic texture
• High (50%+): The repeat approaches the volume of the dry signal; useful for ambient and atmospheric effects
• 100% Wet: Only the delay signal is heard, no dry signal; useful for specific ambient setups

Setting Delay to a Specific Tempo

For rhythmic delay that locks to the song's tempo, you need to calculate the delay time mathematically or use tap tempo.

Using Tap Tempo:

Most modern delay pedals have a tap tempo button. Tap it in time with the song four or more times; the pedal calculates the quarter-note value automatically.

Calculating the delay time manually:

The formula: 60,000 ÷ BPM = quarter-note delay time in ms

Examples:

• 120 BPM: 60,000 ÷ 120 = 500ms (quarter note)
• 100 BPM: 60,000 ÷ 100 = 600ms (quarter note)
• 140 BPM: 60,000 ÷ 140 = 428ms (quarter note)

For dotted eighth note delay (the U2 / The Edge style), multiply the quarter note value by 0.75:

• 120 BPM quarter note = 500ms; dotted eighth = 375ms
• 100 BPM quarter note = 600ms; dotted eighth = 450ms

Common Delay Styles

Slapback Echo (50-120ms)

Used in: Rockabilly, vintage country, 1950s rock and roll, some R&B.

Settings:

• Delay time: 60-80ms
• Feedback: 1 repeat only (low)
• Mix: 30-40%

Slapback creates the impression of a very short echo — fast enough that it sounds almost like a doubled performance rather than a distinct echo. It was common in 1950s Sun Studios recordings (Elvis, Johnny Cash, Carl Perkins).

Dotted Eighth Note Delay (The Edge Style)

Used in: U2, post-rock, ambient rock, modern melodic playing.

Settings:

• Delay time: 75% of the quarter-note value for your tempo (see calculation above)
• Feedback: 2-4 repeats
• Mix: 25-35%

The dotted eighth delay creates a triplet-over-quarters polyrhythmic effect. A single-note picking pattern becomes a cascading, rhythmically complex sound with relatively simple playing technique. Set the tempo precisely — even small timing errors make the effect sound wrong.

General Lead Delay (250-400ms)

Used in: Classic rock lead guitar, blues-rock solos, country.

Settings:

• Delay time: 280-380ms
• Feedback: 2-3 repeats
• Mix: 20-30%

This is the most common delay setting for lead guitar. It adds spaciousness to a solo without creating a distinct rhythmic echo effect. David Gilmour's lead tone uses a delay at approximately 380ms for the characteristic "singing" quality of sustained notes.

Ambient and Atmospheric Delay

Used in: Shoegaze, ambient guitar, post-rock, experimental.

Settings:

• Delay time: 500-700ms
• Feedback: 5-8 repeats (approaching self-oscillation)
• Mix: 40-60%

Long delay times with high feedback create a wash of sound that obscures individual note attacks. Combined with reverb after the delay, this produces the ambient soundscape associated with artists like Sigur Rós or Brian Eno.

Analog vs Digital Delay

Analog delay (tape or bucket-brigade circuit): The repeat degrades slightly with each cycle — the first repeat is close to the original; subsequent repeats are progressively darker and softer. This natural degradation produces a warmer, more musical echo that blends naturally.

Examples: MXR Carbon Copy, Boss DM-2, Electro-Harmonix Deluxe Memory Man.

Digital delay: The repeat is a precise digital copy of the original. Each repeat is as clear as the first (unless modulation is added). This produces a more modern, precise sound.

Examples: Boss DD-8, TC Electronic Flashback 2, Strymon TimeLine.

Which to choose:

For warm, vintage character: analog For precise, musical delay with many options: digital For tap tempo and specific rhythmic delay: digital

Delay Position in Signal Chain

Delay goes after your distortion and modulation pedals, and before reverb:

Guitar → Tuner → Drive → Chorus/Phaser → Delay → Reverb → Amp

This ensures that:

• The delay repeats the fully processed, distorted signal
• The reverb applies to the entire signal including the delay tails
• The delay timing is consistent with the original note dynamics

Delay in the effects loop:

Many amplifiers have an effects loop (send/return between the preamp and power amp). Placing delay in the effects loop means:

• The delay receives the preamp-distorted signal
• The delay repeats do not go through the preamp again
• The result is cleaner, more defined delay repeats at high gain settings

Frequently Asked Questions

What is the difference between delay and reverb? Reverb simulates a space — placing the guitar in a room, hall, or cave. Delay produces discrete, timed echoes. Reverb has a continuous, diffuse decay; delay has specific, countable repeats. Both add space and depth, but differently.

Should I use delay before or after distortion? After. Delay placed before distortion will have its repeats distorted alongside the original signal, which muddies the rhythm. Delay after distortion repeats the complete, driven signal cleanly.

What is a good first delay pedal? The Boss DD-8 ($130) is the most flexible and reliable option at its price. The TC Electronic Flashback 2 ($150) adds tone print capability for further customisation. The MXR Carbon Copy ($120) is the best warm analog option.

How do I make delay sit in the mix without being too obvious? Reduce the mix level until the delay is felt rather than heard as a distinct effect — typically 15-25% mix. Add a slight treble cut to the delay signal if your pedal allows tone control; this makes the repeat feel further away. Keep feedback at 2-3 repeats maximum.

Explore lead guitar tones with delay using ToneStakr's sound-like pages.