Rum is a reverb effect from Klevgrand that simulates small rooms, built around ten sampled rooms with six variants each, and a crack for it is what most searches for the name are looking for.
Rum at a glance
| Developer | Klevgrand |
|---|---|
| Type | Effects / Reverb |
| Formats | VST2, AU, AAX |
| Operating systems | Windows 10 or later, macOS 10.15 or later |
| Apple Silicon | Native |
| Free trial | Available |
| Price on Plugin Boutique (October 2026) | €34.71 |
What Rum does
The plugin offers ten different rooms, each with six variants, and the room is picked first, after which the input gain and a filter shape the entrance of the signal. Mic settings and different room characters can be combined to build a custom space, and a control moves the sound source away from the walls to set its distance. Three types of stereo spread algorithms set the final width, alongside modulation and a stereo spreader. Rum is offered as VST2, AU and AAX for Windows and macOS, and a keygen or serial key is the string most often typed next to the name.
Key features
- Ten sampled rooms. Each of the ten small rooms is sampled and offers six variants, chosen as the base of the reverb.
- Mic settings and room character. Different mic setups and characters can be crossed and combined inside a room to shape its sound.
- Distance from walls. A control simulates how far the sound source sits from the walls of the room.
- Stereo spread algorithms. Three types of stereo spread algorithms, with modulation and a stereo spreader, set the final width.
- Ducker on the wet signal. A ducker compresses the wet signal to tame transients in a more natural way.
- Filters and pre-delay. Low cut and high cut filters are included, and pre-delay can be synced to tempo.
Rum compared with similar plugins
Mutant Reverb is also a reverb effect from W. A. Production in VST2, AU and AAX for Windows and macOS. Perfect Room 2 from Denise Audio is a reverb effect that adds VST3 to the same formats for Windows and macOS.
| Plugin | Developer | Type | Formats | Systems | Price |
|---|---|---|---|---|---|
| Rum | Klevgrand | Reverb | VST2, AU, AAX | Windows, macOS | €34.71 |
| Mutant Reverb | W. A. Production | Reverb | VST2, AU, AAX | Windows, macOS | €43.64 |
| Perfect Room 2 | Denise Audio | Reverb | VST3, VST2, AU, AAX | Windows, macOS | €64.46 |
| Sunset Sound Studio Reverb II | IK Multimedia | Reverb | VST3, AU, AAX | Windows, macOS | €178.49 |
| Spacerek | D16 Group | Reverb | VST3, VST2, AU, AAX, Standalone | Windows, macOS | €78.34 |
Price and availability
Rum was listed on Plugin Boutique in October 2026 at €34.71. A free trial is offered. Prices change often, so the store page shows the current one.