Cherry Audio Releases Rackmode Signal Processors

Cherry Audio Releases Rackmode Signal Processors

February 24, 2022 - Cherry Audio is delighted to announce the release of its latest effects plugins, the Rackmode Signal Processors. Rackmode is a bundle of eight plugins that replicate the classic rack-mounted Moog Signal Processors of the 1970s and ‘80s, and includes:

  • Rackmode Vocoder (instrument and effects versions)

  • Rackmode Phaser

  • Rackmode Ring Modulator

  • Rackmode String Filter

  • Rackmode Frequency Shifter

  • Rackmode Graphic EQ

  • Rackmode Parametric EQ


In the late ‘70s and early ‘80s, Moog (then owned by Norlin Music, Inc.) wanted to extend their reach further into the production studio. One effort was the Signal Processor family of rack-mounted products featuring the 16 Channel Vocoder, 12 Stage Phaser, and the Ten Band Graphic and Three Band Parametric Equalizers. Other related rack products were the Frequency Shifter and Ring Modulator, based on the designs of pioneer Harald Bode, and the singular String Filter created by Moog's Custom Engineering group.

The Moog Signal Processors have found a place in production facilities worldwide, both past and present. Artists like Wendy Carlos, Yellow Magic Orchestra, Tangerine Dream, John Carpenter, Genesis, Jan Hammer, Mouse on Mars, and Coldplay have used them to shape their distinctive sounds. And producers as diverse as Giorgio Moroder, Mike Elizondo, and Sylvia Massy have cited these black boxes as treasured parts of their studio gear. Today these units are increasingly scarce and fetch prices far above their original value – that is, if they can be found at all.


Our Rackmode Signal Processors bundle represents the first time this entire line of renowned analog treasures has been recreated as virtual effects. Rackmode also marks our latest collaboration with award-winning synth designer and DSP legend Mark Barton (MRB), who modeled the circuit-precise emulations based on the original rack-mounted hardware. The eight Rackmode Signal Processor plugins include:

  • Rackmode Vocoder - Rackmode includes two versions for this 16 channel classic: an instrument plugin with a built-in polyphonic dual oscillator, and an effects plugin to modify other input formats and DAW tracks for unlimited processing flexibility.

  • Rackmode Phaser - Based upon the definitive 12 stage original known for its lush, sweeping textures.

  • Rackmode Ring Modulator - Based on Moog's Harald Bode Ring Modulator with Squelch control.

  • Rackmode String Filter - This effect utilizes filter arrays that mimic acoustic string instruments, drawing from the extremely rare system created by Moog’s Custom Engineering Group.

  • Rackmode Frequency Shifter - Mixes two external inputs or sidechains a single input with its own built-in oscillator. The Frequency Shifter creates colorful, often metallic effects by modifying the ratio of incoming frequency components.

  • Rackmode Graphic EQ - Ten selectable frequency bands with Drive and Gain controls, capable of creating exotic effects when used with other instruments and effects.

  • Rackmode Parametric EQ - Three bands for sculpting Low, Mid, and High-frequency ranges.


We have expanded these effects with additional features aimed at today's music producers, including presets, LFOs, stereo processing, and full Apple Silicon M1 native support. And speaking of authenticity, these effects capture not only the deep sounds and capabilities of the original Signal Processor line, but also the elegant look and heritage of the rack-mounted enclosures.

Cherry Audio's Rackmode Signal Processors collection represents a first-time opportunity for producers to explore these studio-quality vintage effects. When combined with today's modern production workflow, experimentation will lead to inspiration, and an old approach to sound can unexpectedly result in something completely new.


Along with our musical engineering expertise, Cherry Audio strives to provide vintage sound at a fraction of the cost of the original hardware. If tracked down and purchased today, the original Moog hardware would cost over $20,000. Cherry Audio is introducing the entire Rackmode Signal Processors bundle at an unheard-of price of $99, less than $13 per plugin!

The Cherry Audio Rackmode Signal Processors collection is available now at and authorized Cherry Audio resellers worldwide for only $99 (list $129). Visit our site for more product details and extensive sound demos. The collection is available for Windows and macOS in AU, VST, VST3, AAX, and standalone formats, with a free seven-day trial period. It includes full native support for Apple's M1 processor and is fully compatible with macOS 12 Monterey.

Moog® is a registered trademark of Moog Music, Inc. There is no association, affiliation or endorsement of Cherry Audio or its products by Moog Music, Inc.