A Different Kind of Spring Reverb

AudioScape XL-305R Dual recreates the character and workflow of AudioScape’s XL-305R equally tempered stereo spring reverb in plugin form.

The design traces its inspiration to the original XL-305/MicMix concept, a spring-based reverb known for its unusual construction and smooth decay. AudioScape’s modern hardware version was reimagined over several years with input from original XL-305 designer Wayne Kirkwood, before the concept was brought into software with Kiive Audio.

12 Springs Tuned Together

What makes the XL-305R concept unusual is its 12-spring assembly.

Rather than relying on a conventional spring configuration, the springs are tuned together in an equally tempered arrangement. AudioScape compares the resulting behavior to opening a piano lid, holding the dampers open and singing into the strings.

This approach is intended to produce a smoother and more diffuse reverb response while retaining the distinctive movement and personality associated with physical spring reverbs.

From Smooth Ambience to Spring Character

The XL-305R can respond differently depending on how it is driven.

At gentler settings, the effect can deliver a smoother ambience that AudioScape has described as moving toward a plate-like character. Pushing the input harder brings out more of the recognizable spring behavior and texture.

This makes the plugin useful for a variety of sources:

• Vocals
• Electric guitars
• Acoustic guitars
• Drums
• Percussion
• Synths
• Keys
• Full instrument buses

Dual Stereo Processing

The XL-305R Dual provides stereo processing based on the dual-channel architecture of the original hardware-inspired design.

Each side can be shaped independently, allowing more control over the stereo reverb image and tonal balance.

Input Controls

The input controls determine how strongly the signal drives the virtual reverb system.

Increasing the input can produce a more pronounced and energetic response, while overload indicators help monitor the signal level.

Mix Controls

Mix controls allow the dry and wet signal balance to be adjusted for each channel.

This makes it possible to use the XL-305R Dual as a subtle spatial effect, a heavily processed reverb, or as part of a more experimental stereo setup.

Four-Band EQ

Each channel includes a four-band boost/cut EQ for shaping the tone of the reverb.

You can adjust the frequency balance of the wet signal to make the reverb darker, brighter, thinner, warmer or more focused.

Mono Drive

The Mono Drive function links the stereo channels to make the stereo image easier to control as a unified source.

Mono Return

The Mono Return function sums the reverb return to mono, providing another option for controlling width and placement.

Artist Presets

The plugin includes artist presets from contributors including:

• Armon Jay
• Matt Lange
• Joe Carrell
• Melissa Bell
• Clifton Miles
• Adam Sliger

These presets provide starting points for exploring different uses of the XL-305R Dual sound.

Key Features

• Equally tempered stereo spring reverb design
• Inspired by the AudioScape XL-305R hardware
• Based on a 12-spring tuned concept
• Developed with Kiive Audio
• Independent dual-channel processing
• Input drive controls
• Signal overload LEDs
• Wet/dry mix controls
• Four-band EQ on each channel
• Mono Drive function
• Mono Return function
• Stereo output monitoring
• Artist presets
• Vintage-inspired interface option
• VST3, AU and AAX support

Plugin Formats

Product FAQ

What is AudioScape XL-305R Dual?

It is a stereo spring reverb plugin based on AudioScape’s XL-305R hardware design and its unusual equally tempered 12-spring concept.

What makes the XL-305R different from a normal spring reverb?

The design is based on 12 springs tuned together, producing a smoother and more diffuse response than the classic single-character spring effect.

Can the XL-305R sound like a plate reverb?

At milder input settings, AudioScape describes the hardware design as capable of producing a more plate-like character, while harder driving brings out more obvious spring behavior.

Does XL-305R Dual have EQ?

Yes. It includes four-band boost/cut EQ controls on each channel for shaping the wet signal.

Does it support Apple Silicon?

The published plugin information lists native Apple Silicon/M1 support for the macOS version.

Can I use it in FL Studio?

Yes, compatible versions of FL Studio can use the VST3 format.

Does it work in Logic Pro?

Yes. The macOS version supports AU.

Does it support Pro Tools?

Yes. The plugin supports AAX.