Introduction
The KORG MS-20 MINI is an authentic, true-analog reincarnation of Korg's legendary 1978 MS-20 monophonic synthesizer, meticulously scaled down to 86% of the original size. Overseen by the original engineering team to ensure absolute historical accuracy, this compact patching beast replicates the exact discrete component circuitry that made the original a foundational pillar of electronic music. It fits beautifully into modern desktop studios and mobile production setups, delivering raw, untamed vintage sound design capabilities with contemporary MIDI/USB functionality.
Main Features
The defining strength of the KORG MS-20 MINI lies in its pure analog signal path, dual self-oscillating resonant filters, and versatile patching capabilities. The voice architecture features a dual voltage-controlled oscillator (2-VCO) framework with ring modulation, delivering massive, harmonically rich basslines and cutting lead tones.
To shape this raw sound, the synthesizer is equipped with two iconic self-oscillating filters connected in series—a high-pass filter (HPF) and a low-pass filter (VCF). When the resonance peaks are maximized on these legendary KORG35 filter circuits, they self-oscillate to create aggressive, distorted overtones and screaming soundscapes.
To the right of the control panel is an extremely flexible 1/8-inch (3.5 mm) patch bay. This semi-modular matrix allows you to override the internal hardwired signal path, letting you route envelope generators, low frequency oscillators (LFO), sample and hold circuits, and noise generators to construct incredibly complex, evolving synth textures.
The system also includes the highly experimental External Signal Processor (ESP). This specialized circuit takes any external audio input—such as a vocal microphone or electric guitar—and translates its pitch and volume into control voltages, allowing you to use your voice or an instrument to play and modulate the synthesizer directly.
Usage Scenarios
- Studio: Reclaim valuable desk space and record classic, dirty analog basslines directly into your DAW, using MIDI or USB connections to sequence notes.
- Live performance: Command the stage with an iconic, vertically oriented mini-synth, utilizing the manual control wheel and momentary switch for expressive sweeps.
- Practice: Master the absolute fundamentals of modular routing, subtractive synthesis, and wave patching using the printed flow-charts on the front panel.
- Recording: Track screaming, aggressive lead lines or filter-swept external instruments in the studio, utilizing a newly designed VCA that has a quieter noise floor than the 1978 original.
- Education: Instruct synthesis classes in university music labs, utilizing a highly visual, tactile patch bay to demonstrate control voltage parameters.
Features
- Authentic, all-analog monophonic semi-modular synthesizer replicating the iconic 1978 MS-20.
- Compact chassis is meticulously scaled down to 86% of the original physical hardware footprint.
- Dual-VCO design with ring modulation produces rich, uncompressed vintage leads and growling basses.
- Series-connected self-oscillating high-pass and low-pass filters deliver aggressive, highly distorted overtones.
- Comprehensive 3.5mm control voltage patch bay allows for extensive modulation and signal rerouting.
- External Signal Processor (ESP) converts external instrument pitch and volume to control the synthesizer.
- Premium envelope generators feature dedicated delay and hold parameters to sculpt your sound dynamics.
- Modern 5-pin MIDI Input and USB-MIDI port enable seamless note sequencing with computers and controllers.
- Completely analog, low-noise VCA circuit preserves the raw, warm character of early electronic music.
- Comes complete with a power adapter, ten yellow patch cords, and a reprint of the original 1978 manual.
Technical Specs
- Synthesizer Engine Type: True Monophonic Semi-Modular Analog Synthesis Voice
- Keyboard Layout Profile: 37 x Slim Mini-Keys (Non-velocity sensitive, matching the original key layout)
- Voice Architecture Blueprint: 1 Voice (Monophonic architecture with standard 2-VCO framework)
- Oscillator Parameters: VCO1 (Triangle, Sawtooth, Pulse Wave with Width parameter, White Noise) | VCO2 (Sawtooth, Square, Pulse Wave, Ring Modulator)
- Filter Suite Topology: Resonant High-Pass Filter and Low-Pass Filter connected in series (Classic self-oscillating KORG35 design)
- Envelopes: EG1 (Attack, Decay, Release) | EG2 (Attack, Decay, Sustain, Release, Hold)
- Low Frequency Oscillator: 1 x LFO (Modulation Generator with Pulse/Sloped waveforms and rate controls)
- Front Panel Patch Bay: 31 x 1/8-inch (3.5 mm) TS Control Voltage input/output jacks
- Manual Controllers: 1 x Control Wheel (center click), 1 x Momentary Switch to ground
- Inputs: 1 x 1/8-inch (3.5 mm) TS External Signal Input, 1 x 5-pin MIDI In, 1 x USB Type-B (transmits/receives note data only)
- Outputs: 1 x 1/8-inch (3.5 mm) TS Line Output (2Vp-p), 1 x 1/8-inch (3.5 mm) TRS Headphone Output
- Power Requirements: DC 9V AC Power Adapter (9V/1.7A, included)
- Dimensions (W x D x H): 493 mm x 257 mm x 208 mm / 19.41 x 10.12 x 8.19 inches
- Weight: 4.8 kg / 10.58 lbs
CK Music Staff Recommendation
The CK Music team highly recommends the KORG MS-20 MINI for any musician, recording engineer, or synthesis enthusiast looking to venture into modular patching or those who simply crave an instrument with an unfiltered, aggressive vintage personality. While many modern digital instruments sound polished and clean, the MS-20 mini is proudly raw, dirty, and full of glorious analog attitude. Its dual resonant filters can scream, distort, and self-oscillate like nothing else on the market, making it an absolute staple for industrial music, techno, and ambient sound design. Combined with its 86% scaled down travel-friendly size, included patch cables, and modern USB-MIDI DAW connectivity, it represents a highly efficient and iconic analog workstation.