RO-SPR, from Black Rooster Audio, is a reverb plugin that models the vintage spring reverb unit in six spring types with a three-band EQ, and a free download of the crack for it is what most people search for when the name comes up.
RO-SPR at a glance
| Developer | Black Rooster Audio |
|---|---|
| Type | Effects / Reverb |
| Formats | VST3, VST2, AU, AAX |
| Operating systems | Windows 7 or later, macOS 10.9 or later |
| Apple Silicon | Native |
| Architecture | 64-bit |
| RAM | 1 GB or more |
| Price on Plugin Boutique (October 2026) | €48.59 |
What RO-SPR does
The plugin recreates the spring reverb that Laurens Hammond patented in 1939, a design with a transducer at one end of a metal spring and a pickup at the other. Hammond later built the spring principle into a mechanical hall processor, and Leo Fender popularised the concept with the 1963 Fender Vibroverb. RO-SPR offers six spring types, and its three-band EQ corrects the spectrum that the springs produce so the reverb keeps a natural room feel.
The developer describes spring reverbs as bouncy and ringy because of their mechanical nature, and RO-SPR is built around that character. It is listed in VST3, VST2, AU and AAX formats for Windows and macOS, with native support for Apple Silicon.
Key features
- Six spring types. Six spring reverb types can be selected, each with its own character, and the three-band EQ shapes the output after the springs.
- Three-band EQ. The three-band EQ corrects the spectrum produced by the springs, which the developer says keeps the reverb close to a natural room sound.
- Mechanical resonance. The spring reverb model reproduces the bouncy and ringy quality that the developer ties to the mechanical behavior of springs.
- Guitar, bass and vocal use. The developer lists guitar, bass, vocal, drum, brass and synth tracks as sources for the vintage spring sound.
Compatibility
It loads as VST3, VST2, AU and AAX for Windows and macOS in 64-bit builds, with native Apple Silicon support, a minimum of macOS 10.9 or Windows 7, and 1 GB of RAM.
Who it is for
RO-SPR suits producers and mix engineers who want a spring reverb sound on guitar, bass, vocal, drum, brass or synth tracks and who work with a DAW that loads VST3, VST2, AU or AAX plugins.
RO-SPR compared with similar plugins
Spring Reverb by Softube is a VST3, VST2, AU, AAX and RTAS effect for Windows and macOS, Springs by AudioThing adds CLAP to the same VST3, VST2, AU and AAX set, Dimensions by Softube is an effects reverb in the same formats, and Dual Spring by IK Multimedia is an effects reverb offered in VST3, VST2, AU and AAX for Windows and macOS.
| Plugin | Developer | Type | Formats | Systems | Price |
|---|---|---|---|---|---|
| RO-SPR | Black Rooster Audio | Reverb | VST3, VST2, AU, AAX | Windows, macOS | €48.59 |
| Spring Reverb | Softube | Reverb | VST3, VST2, AU, AAX | Windows, macOS | €88.26 |
| Springs | AudioThing | Reverb | VST3, VST2, AU, AAX, CLAP | Windows, macOS | €68.43 |
| Dimensions | Softube | Reverb | VST3, VST2, AU, AAX | Windows, macOS | €147.76 |
| Dual Spring | IK Multimedia | Reverb | VST3, VST2, AU, AAX | Windows, macOS | €118.99 |
Price and availability
RO-SPR was listed on Plugin Boutique in October 2026 at €48.59. Prices change often, so the store page shows the current one.
RO-SPR FAQ
Where can I download RO-SPR crack for free?
The RO-SPR crack circulates as a torrent or magnet link, and the repack is usually shared as .rar or .iso files for Windows and macOS.
Is RO-SPR available as a torrent or magnet link?
Yes, the release is distributed as a torrent or magnet link, often packed as a repack with .rar and .iso files.
Does RO-SPR run on Apple Silicon Macs?
Yes. The developer lists native support for Apple Silicon, with a minimum of macOS 10.9.