PS-20 by Cherry Audio synth plugin interface

PS-20: Analog-Style MS-20 Tribute Synth by Cherry Audio

Rated 4.7/5 on Plugin Boutique (659 ratings)

PS-20 is a polyphonic virtual synthesizer from Cherry Audio that models the filters and modular-style patch panel of the Korg MS-20. It runs as a VST3, VST2, AU, AAX or standalone plugin on Windows and macOS.

VST3VST2AUAAXStandaloneWindowsmacOS64-bit

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01Overview

PS-20 is Cherry Audio's tribute to the Korg MS-20, a semi-modular synth known for its aggressive filter sound. The plugin focuses on the filters, reproducing the classic highpass and lowpass responses in detail. It also reworks the original patch panel, adding patch points and a cabling system, and expands the instrument with 16-voice polyphony, a sequencer and built-in effects. The developer describes it as one of the most unusual instruments in its catalog, where unpredictable filter behavior and flexible routing invite experimentation.

Best for

Acid basslines
Squelchy lead sounds
Experimental sound design
Modular-style patching
Tempo-synced sequences

Developer: Cherry Audio
Category: Synths
Store: Plugin Boutique

02Key features

What you get

Modeled MS-style highpass and lowpass filters for the MS-20 sound
Up to 16-voice polyphony with random voice panning
Three-channel, eight-step sequencer with tempo sync
Expanded patch panel with Voltage Modular cabling system
External signal processor section with normalled sidechain input
Tempo-syncable modulation generator
Unison detune for thick leads and basses
MPE support and full DAW automation
Distortion, reverb and modulation echo effects included
Four selectable interface colour themes

03In depth

Filters and Sound Character

The core of PS-20 is its pair of MS-style filters, a highpass and a lowpass modeled to match the character of the original MS-20. The filters are the main source of the synth's gritty, squelchy tone, and they respond strongly to resonance and modulation.

The synth offers up to 16 voices of polyphony, with random voice panning available for wider stereo layouts. Unison detune can thicken leads and basses, and MPE support lets expressive controllers shape notes in more detail.

Patch Panel, Sequencer and Effects

PS-20 keeps the modular spirit of the MS-20 with an expanded, simplified patch panel. Cherry Audio adds in and out points for oscillators, filters and VCAs, and the cabling system is based on the next-generation design from Voltage Modular. An external signal processor section with a normalled sidechain input adds further routing options.

A three-channel, eight-step sequencer with a 1/2-step quantizer and tempo sync drives the patches, and a tempo-syncable modulation generator adds movement. Built-in distortion, studio-quality reverb and modulation echo with tempo sync complete the signal chain. Full MIDI control and DAW automation cover all controls.

04Specs