Lush stereo reverbs with powerful control

R4 delivers the historic warmth of time-tested reverb hardware units with expanded creative control. Add personality and depth to your music with reverb designed to color your mixes without compromising clarity. For less traditional projects, use creative effects like Warp and Freeze to mangle your reflections beyond recognition and create twisted time effects to take your audience by surprise.

Sale! $209 USD
$299 USD

Get R4 along with PhoenixVerb, NIMBUS, and Excalibur in the Stereo Reverb Bundle!

Vintage reverb, contemporary design

For decades, audio engineers have sworn by the warmth and color of reverb hardware units to bring life and fullness to their mixes. R4 delivers the classic reflections of vintage hardware with the control and versatility of present-day DSP technology. With a comprehensive parameter toolset and modern creative effects, R4 is a refreshing take on tried-and-true reverb tone.


Hear R4 in action

Cutting-edge control


Classic reverb meets modern technology

R4 uses an updated R2 algorithm to bring the sought-after character of vintage reverb hardware to your DAW, delivering retro tone coupled with modern filtering and gain controls for an update on the vintage reverb experience.


Stop time and space with Freeze

Freeze gives you the ability to easily stretch an instant of reflected sound into infinity, and can also be combined with the Warp module’s overdrive and compression to craft a dramatic sustained reverb drone or striking cinematic ramp effects.


Make your reverb a little more musical

With the ability to sync to the tempo of your session, R4’s global pre-delay, reverb delay, and dynamic tail suppression integrate seamlessly with your music to place the reverb into the groove for a balanced mix in any musical context.

Key Features

  • Lush stereo reverb algorithm

  • Warp controls with compression and overdrive

  • Create ambient drones and texture with Freeze

  • Pre-delay and reverb delay adjustable by tempo

  • Chorus and Gate modules for musical effects

  • 5 additional early reflection patterns and an additional hall algorithm

  • Dynamic tail suppression to lower reverb in louder parts of a mix

  • Over 1,200 presets (rooms, plates, halls, chambers, and more)

  • EuControl support


"These reverbs to my ears demonstrate their designer's pedigree and are the best that I have ever heard."

- Mike Aiton, Audio Media

"Amazing reverb, stunning sound, I just love it!"

- Mike Thornton, Pro Tools Expert



Sale! $209 USD
$299 USD

  • Lush stereo reverb algorithm

  • Multi-effects include overdrive, compression, modulation, and more!

System Requirements

Operating Systems

        Mac: OS X 10.8 Mountain Lion - macOS 10.14 Mojave
        PC: Win 7 - Win 10

Hardware Requirements

        CPU: Multicore processor, 2 GHz or greater
        RAM: 2 GB or greater
        Display: 1024 x 768 or greater

Plug-in Formats

        AAX, AU, VST, VST3 (all formats 64-bit only)

Channel Formats

        Mono, Stereo


        iLok License Manager required
        iLok2, iLok3, or iLok Machine License
        Exponential Audio products are not available in iZotope’s Product Portal