by Lasse Eilers | Approximate reading time: 2 Minutes
Black Rooster Audio RO-SPR

Black Rooster Audio RO-SPR  ·  Source: Black Rooster Audio


Black Rooster Audio caters to all your spring reverb needs with RO-SPR, the company’s latest plug-in. With emulations of six different types of springs, which you can adjust using a variety of controls, RO-SPR brings back the bouncy, springy reverbs of an era long gone.


Black Rooster Audio RO-SPR

Fancy some classic spring reverbs for your productions? Then you won’t want to miss RO-SPR, the new plug-in from Black Rooster Audio. Don’t be mistaken: This isn’t a tool for clean, sparkling high-resolution reverbs. Instead, RO-SPR brings back the classic lo-fi effects and coloration associated with vibrating metal springs in a box.

Black Rooster Audio has included six types of springs, so RO-SPR offers a variety of flavors to choose from. The developer doesn’t mention the exact hardware units, but tells us that the six modes cover four decades of spring reverb history.

Unlike most analog spring reverbs, the plug-in operates in mono or stereo modes, and there’s even an M2S mode for extra stereo width. RO-SPR also lets you adjust the spring length and decay time, and there’s a pre delay with a range of 0–500 milliseconds.

With separate controls for the two inputs and two outputs and two large VU meters, gain staging should be no issue. And you can tweak the reverb tail using the integrated 3-band equalizer.


While you probably already have a couple of spring reverbs in your collection, RO-SPR looks like a great tool for creative sound design and vintage spring effects – especially at the introductory price.

Price and availability

Black Rooster Audio currently has an introductory offer for €55. That’s less than half the regular price of €119. A 14-day trial version is available on the company’s website.

The plug-in requires macOS 10.9 or higher (Caution: macOS 11.x and M1 processors aren’t supported yet!) or Windows 7 or higher. It’s available in VST, AU and AAX formats.

More information about RO-SPR


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Black Rooster Audio RO-SPR

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