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The ro spr Black Friday deal is 61% off at $19 until Nov 22, 2026, on Black Rooster Audio's RO-SPR, a spring reverb plugin modeled on vintage hardware.
The maker pitches it as a way to add mechanical, slightly psychedelic character to your productions. It has 6 spring types, a three-band EQ, plus spring length and mode controls.
It is a software take on the spring reverb tank, the compact reverb that turned up in Hammond organs from 1960 and in standalone units like the Accusonics Type 4 SR. Leo Fender made the concept famous with the 1963 Fender Vibroverb.
The maker points out that springs were far cheaper and lighter than plate reverbs, which could cost thousands of dollars and weigh around 600 pounds each. You can hear the sound on records from The Doors to Queens Of The Stone Age.
Put it on guitar, bass, vocal, drum, brass or synth tracks, or on any bus or mix channel.
The main features, as the maker lists them:
The routing is where it gets interesting. In stereo mode, the left and right signals feed independent springs.
In M2S mode, a mono signal goes to non-identical springs, which builds width from a mono or stereo source.
The EQ is there to tame the spectral behavior of the spring. Gain staging covers the level going into the processing and the level coming out, and the stereo channels are separated so you can set the amplitude for the natural stereo image of multiple springs. Black Rooster Audio says these can vary with the spring material and the frequency spectrum of the signal.
On Mac, you need OSX 10.9 or newer, with an Intel Core CPU or an Apple Silicon M1/M2 processor. It needs 1GB of RAM and a 64-bit host in VST, VST3, AU or AAX format.
On PC, you need Windows 7 or newer with an SSE2 compatible processor (Intel Core recommended), 1GB of RAM and a VST, VST3 or AAX host.
Both platforms call for a display resolution of 1280x1024 pixels or more.
Yes. The ro spr Black Friday deal is 61% off, bringing the RO-SPR spring reverb plugin from Black Rooster Audio to $19. The offer ends Nov 22, 2026.
You get 6 spring types modeled on hardware, length and decay controls, mono, stereo and M2S modes, a 3-band equalizer, and adjustable gain staging with input and output levels.
On Mac it runs as VST, VST3, AU or AAX in a 64-bit host. On Windows it supports VST, VST3 or AAX hosts. Apple Silicon M1/M2 is supported, and Intel Core CPUs work on both platforms.
M2S mode sends a mono signal to non-identical springs, which creates width from a mono or stereo source. In plain stereo mode, the left and right channels instead feed independent springs.
Prices and end dates are checked at publishing time and can change, so confirm them at the store before you buy.