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Line 6 99 DL 4 Stompbox Delay Modeler Pedal — main product image
Line 6

Line 6 99 DL 4 Stompbox Delay Modeler Pedal

★★★★★4.2 (120 reviews)

Explore a Universe of Delay Effects with a Single StompboxThe Line 6 DL4 Stompbox Delay Modeler offers an array of delay sounds, from tube-driven tape loop echoes to squeaky-clean digital echoes and real-time reverse delay. With complete programmable control over all aspects of the sound, this si...

$199.99*
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

Explore a Universe of Delay Effects with a Single Stompbox

The Line 6 DL4 Stompbox Delay Modeler offers an array of delay sounds, from tube-driven tape loop echoes to squeaky-clean digital echoes and real-time reverse delay. With complete programmable control over all aspects of the sound, this simple-to-use tool provides delay effects previously unavailable in a single box.

  • Type: Delay Modeler
  • Effects: 15 Vintage Delay and Echo Effects
  • Loop Sampler: 14 Seconds of Memory + 800ms Pre-delay
  • Features: Half Speed and/or Reverse Overdubbing

Key Features

3 programmable presets and on-board Tap Tempo

True Bypass switching, so your direct tone is exactly that; direct from your guitar to your amp

Expression Pedal Input - for real time control of all effect settings. Effect Selector, Delay Time, Repeats, Tweak, Tweez, Mix

DL4 runs in discrete stereo, both inputs and outputs, so Left stays left and Right stays right. (Loop Sampler sums signal to mono)

Runs from batteries or optional power adapter.

Specifications

Presets
3 programmable
Bypass Switching
True Bypass
Control Input
Expression Pedal Input
Stereo Operation
Discrete stereo inputs and outputs (Loop Sampler sums to mono)
Power Options
Batteries or optional power adapter
Controls
Effect Selector, Delay Time, Repeats, Tweak, Tweez, Mix

Pros & Cons

👍 Pros

  • Offers three programmable presets, allowing musicians to quickly recall their favorite delay settings.
  • Equipped with on-board Tap Tempo functionality, enabling easy synchronization of delay times to live music.
  • Features True Bypass switching, ensuring the guitar's direct tone remains uncolored when the effect is disengaged.
  • Includes an Expression Pedal Input for real-time control over various effect settings, enhancing dynamic performance.
  • Runs in discrete stereo for both inputs and outputs, preserving stereo imaging across the signal path for rich soundscapes.

👎 Cons

  • The Loop Sampler feature sums the stereo input signal to mono, which might limit some stereo sound design applications.
  • Requires either batteries or an optional power adapter, meaning the adapter is not included for immediate plug-and-play use.
  • While offering many controls, the interface may require a learning curve for new users to master all adjustments like Tweak and Tweez.
  • The functionality is specific to delay and modeling, so it does not offer other effect types like overdrive or modulation natively.
  • The "Stompbox" format may be larger than some compact pedals, potentially taking up more pedalboard space.

Frequently Asked Questions

This delay pedal allows you to save three programmable presets, providing quick access to your preferred delay configurations.
No, the Line 6 99 DL 4 features True Bypass switching, which ensures that your direct guitar tone remains unaffected when the effect is disengaged.
Yes, an Expression Pedal Input is included, allowing for real-time control over various effect settings such such as Delay Time and Repeats.
Yes, the DL4 operates in discrete stereo for both inputs and outputs, maintaining stereo imaging, though the Loop Sampler feature sums signals to mono.
The pedal can be powered using batteries or an optional power adapter, offering flexibility for different setups.

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