RF-1 - Algorithmic Reverb (AU, AB, IAA, Standalone)

RF-1 is a collection of algorithmic reverbs capable of creating a variety of effects ranging from small rooms to huge, heavily modulated spaces and everything in between.

RF-1 comes packed with multiple reverb algortihms, a solid standalone application, carfully tuned factory presets and a plethora of tweak-able controls.

What's more, RF-1 integrates with everything from AudioUnit Hosts over Audiobus to Inter-App Audio, Guitar- and USB Interfaces.

* 5 unique reverb programs (see below)
* Continuously variable size
* Variable pre-delay
* Diffusion control
* Damping control
* Width control
* High- and Low shelves (+/- 6db pre effect)
* Mod section with depth and speed controls (Sine LFO 0.01hz to 5.0hz)

1. Hall
Clean and bright sounding space with subtile modulation and gradually building density.

2. Plate
Dark, highly diffused sound with high initial echo density and dark modulation.

3. EnsembleVerb
Capable of huge, wide spaces with deep modulation.

4. TremoloVerb
Large, bright and always moving with amplitude modulation at the output.

5. VintageVerb
Dark, noisy and wonderfull sounding reverb modeled after the first digital reverbs from the late 70s. (10khz bandwidth / 12bit processing)

* AudioUnitV3 Effect
* Inter-App Audio Effect
* Audiobus (Filter)
* Ableton Link
* USB Audio Interface (Standalone)
* Guitar Interface (Standalone)
* Microphone (Standalone)

What’s New

Version 1.2.0

- MIDI Mapping & Learn is now available from the Main UI (Standalone & AUv3)
- New Preset Browser is available from the Main UI (Standalone & AUv3)
- Modernised Plugin to support Parameter Automation when running in an AUv3 Host
- Minor UI Tweaks

Ratings and Reviews

3.0 out of 5
3 Ratings

3 Ratings

simlogue ,

There are better reverbs out there

The only AUv3 plug-in I have that has crashed Cubasis. The Crossover knob has erratic behaviour and it was while moving it during playback that it crashed. It has a nice interface and the right amount of controls to tweak the sound. However the reverb itself sounds mediocre at best, with the vintage algo the only one that I found of value. For plate and halls there are better reverbs out there (eos2, virsyn etc). Still I will use it from time to time for the vintage algo, which has a peculiar sound which my other reverbs can ‘t reproduce.

Appassin Greed ,

Great Reverb Effect

Can’t go wrong with Kai Aras and Numerical.

Nkersov ,

Superb AU enabled Reverb

There are lots of Reverb FX apps available, but few able to match the subtle controllability and quality tones produced by this one. Great price, too.



Kai Aras
14.8 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating
Rated 4+
© 2017 - Kai Aras


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