Deelay by Integraudio & Sixth Sample – Free Delay VST/AU Plugin

Deelay by Integraudio & Sixth Sample - Free Delay VST/AU Plugin |

Developed in collaboration with Sixth Sample, Integraudio’s Deelay is a free delay plugin with a plethora of features geared for modern producers.

The delay effect is bread-and-butter for any music producer. Practically every DAW comes with a delay plugin, and usually, you can get by with them without issue. However, once in a while, you might face a need to use something geared towards sound designing. And the all-new Deelay is a completely free delay effect that allows you to achieve a variety of sounds.

Deelay provides five modes of operation and a distortion stage with many types. Similarly, you can find various other parameters that you rarely see in free and paid plugins. These allow you to customize the way the delay behaves. Furthermore, it features a vast array of presets assorted over multiple categories to help you discover what Deelay can do.




Deelay provides a coherent user interface with color coding for various delay modes. You can also resize the user interface.
The plugin offers an astounding number of features for a free delay plugin. And while some of the features could see some improvements, Deelay is undoubtedly one of the most original free delay plugins currently available.
While adding features like tape effect, distortion, and diffusion makes the plugin fresh, it also invites harsh judgment for its sound. However, despite the relatively uninspired tape effect, I must applaud the smooth diffusion and many distortion types.


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User Interface

Deelay features a modern user interface, which is fully resizable. You’ll find the main delay parameters in the middle section of the user interface, whereas the rest of the controls allow you to add filters, distortion, modulation, and more. At the top left of the UI, you’ll find a Randomize button to change all the parameters, resulting in unexpected sounds.

Similarly, the A-B switch next to the Randomize button allows you to toggle between two configurations, each with a different color scheme. You can even automate the button to change the delay effect mid-song. It’s especially handy for vocals that need a different effect for each section. Finally, you’ll find the preset dropdown menu with a user section for custom presets.


While many free delay plugins tend to be either too simple or too complicated, Deelay finds a rather good balance. It provides many features that would require you to use multiple plugins with track routings. Similarly, it includes classic features like ping-pong mode, mono switch, millisecond mode, and sync mode with triplet and dotted timing. So, it saves time and effort while you explore experimental features.


Diffusion smears Deelay’s echoes to make the effect sound like reverb. You can add a small amount of diffusion to make the delay sound less distinct. Furthermore, the plugin allows you to change the diffusion amount, size, and quality. The diffusion quality slider changes how smeared and smooth the diffusion sounds.


Deelay by Integraudio & Sixth Sample - Free Delay, Reverb & Sound Design VST/AU Plugin

Deelay provides five modes of delay: normal, reverse forward, pure reversed, chaos, and reversed chaos. The ‘reverse forward’ mode reverses the delay sound before it is fed back into the delay for the feedback system. So, it produces a reversed echo every other time. Conversely, the ‘pure reversed’ mode reverses all the echoes.

The ’chaos’ mode changes each echo’s pitch interval. One of the coolest uses I’ve found for it is to change a voice into a strange, “evil” character. Furthermore, if you need even more experimental sounds, try the reversed chaos mode. As the plugin suggests, it sounds excellent with diffusion. The result is similar to a shimmer reverb.


Deelay by Integraudio & Sixth Sample - Free Delay, Reverb & Sound Design VST/AU Plugin

The plugin provides eleven types of distortions, which applies to the delay wet. These include saturation, asymmetrical, clip, tube, rectify, crackly, lightning, amp, bumpy, razor, and pixelated. As you probably expect, most of them do what the name states. For example, the tube distortion emulates classic tube amps, and the amp distortion emulates Class A amp saturation.

However, the other distortion types do not emulate traditional distortion effects. For example, ‘crackly’ emulates jittery wires and ‘pixelated’ adds a noisy lo-fi effect at a low bit depth. Similarly, the ‘lightning’ type adds harsh distortion alongside a white noise. Further, the other types like bumpy and razor sound like they prioritize different frequency ranges.


Deelay offers a Tape knob at the bottom right of the user interface. This parameter adds the wow and flutter of a tape recorder. Furthermore, while the plugin itself doesn’t mention it, I find the wow effect similar to a 30ips mastering tape, although the flutters can be pretty overpowering. So, try dialing in the tape parameter without going overboard to achieve a fairly convincing tape effect. You could even use a 0ms delay, some Tape, and mild Pixelated distortion to use Deelay as a tape emulator!


The top parameter in the middle of the user interface is Duck. It essentially lowers the volume of the wet signal whenever the dry signal plays. So, it’s excellent to avoid muddying your dry signal. Furthermore, Deelay allows you to customize the duck attack and release timing.


As a delay effect alone, Deelay is perfectly transparent and provides all the features you might need. However, it adds a filter section alongside distortion that changes the feedback sound. You’ll find a high-pass and a low-pass filter that sound like they have a 12 dB/octave slope. And you can assign them to the sidechain input or the feedback output.

Similarly, the various types of distortion are very usable. Many of them are too experimental to be called upon often, but they may come in handy while you’re sound designing. Furthermore, while I don’t find the emulations particularly convincing, I found them helpful for adding classic techniques like distorted slap-back delays.


Deelay is available for Windows 10 or higher 32-bit and 64-bit and macOS 10 or higher 64-bit. It comes in VST 3 and AU formats.


Deelay is an excellent delay plugin that suits intermediate users who wish to explore experimental features without getting too complicated. Of course, you will find just as much use as a beginner and a veteran user. However, I’d have loved to see a separate control over the tape speed and flutter level. The lack of enough customizability may make the plugin somewhat limiting, especially to experienced users.

Still, you’ll find useful features like echo offset, a high-pass and a low-pass filter that can filter the input or the wet output, and positioning the distortion at the signal chain’s end alongside what I listed earlier. Hence, there are undoubtedly many uses for this plugin, which should more than justify a spot in your plugin arsenal.

Integraudio & Sixth Sample - Deelay (Free Delay VST/AU Plugin)

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