Korg MS-20 Mini Monophonic Analog Synthesizer

Product #28141 | SKU MS20MINI | Korg
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Features

  • Miniaturised Replica of Original
  • Flexible Patching System
  • 2 Oscillators
  • Ring Modulator on Oscillator 2
  • Envelope Generators with Hold and Delay

Description

The black MS-20 Mini from Korg is a fully functioning analogue synthesiser featuring the circuitry of the iconic, late 1970's MS-20 synthesiser, but shrunk to 86% of the original size. Its versatile patching options, analogue filters, and the ability to process external signals makes this diminutive powerhouse very attractive to the analogue synthesiser aficionado.

A development team led by the original engineers strove to painstakingly replicate the MS-20, both in sound and form. The sound comes from an architecture featuring two oscillators (one with ring modulation) and envelope generators with hold and delay. The VCA (Voltage Controlled Amplifier) maintains the basic design of the original, but has been modified to produce less noise.

High- and low-pass filters with resonance and distinctive distortion can deliver radical sounds when they are pushed into self-oscillation. Additionally, external sources such as an electric guitar or vocals can be used to control the synthesiser or have the source manipulated by the filters. A flexible hard-wire patching system provides nearly endless possibilities.

The synthesiser features a MIDI In jack for receiving note messages, and a USB-MIDI connector that can transmit and receive note messages (there is no velocity information). Connecting the unit to a computer allows it to be triggered from a sequencer.

Features

  • Miniature MS-20 is a complete replica of the original analogue circuitry at 86% of the original size
  • Overseen by the engineers of the original MS-20
  • Incorporates a dual VCO (Voltage Controlled Oscillator), dual VCA (Voltage Controlled Amplifier), dual VCF (Voltage Controlled Filter), dual EG (Envelope Generator), and a single LFO (Low Frequency Oscillator) structure
  • Self-oscillating, high-pass/low-pass filters with distinctive distortion
  • External signal processor (ESP)
  • Highly flexible patching system
  • MIDI In and USB connector
  • Replicates every detail of the original, down to the package binding and the included manual

Specifications

Keyboard 37-note mini keyboard
Polyphony Monophonic
Multitimbral No
Synthesis Method Voltage-controlled analogue
Control Section Voltage Controlled Oscillator 1 (VCO 1)
Scale: 32, 16, 8, 4' (6 octaves, +cent, -cent)
Waveform: Triangle, Sawtooth, PW-Square, White Noise, (x 4 modes)
Pulse Width Adjust: 1:1 to 1:Infinity

Voltage Controlled Oscillator 2 (VCO 2)
Scale: 16, 8, 4, 2' (6 octaves, +cent, -cent)
Waveform: Sawtooth, Square, Pulse, Ring Modulator, (x 4 modes)
Pitch: +/-1 Octave

VCO Master Control
Master Tune: +/- 100 cents
Portamento: Maximum 10 sec
Frequency Modulation Intensity by MG/T.EXT: -5 to +5 V
Frequency Modulation Intensity by EG1/EXT: -5 to 0 V

VCO Mixer
VCO 1 Level
VCO 2 Level

Voltage Controlled High Pass Filter (VCF HPF)
Cutoff Frequency: 50 Hz to 15 kHz
Peak: Flat to self OSC
Cutoff Frequency Modulation Intensity by MG/T.EXT: -5 to +5 V
Cutoff Frequency Modulation Intensity by EG2/EXT: -5 to +5 V

Voltage Controlled Low Pass Filter (VCF LPF)
Cutoff Frequency: 50 Hz to 15 kHz
Peak: Flat to self OSC
Cutoff Frequency Modulation Intensity by MG/T.EXT: -5  to +5 V
Cutoff Frequency Modulation Intensity by EG2/EXT: -5 to +5 V

Envelope Generator 1
Delay Time: 10 sec
Attack Time: 10 sec
Release Time: 10 sec

Envelope Generator 2
Hold Time: 20 sec
Attack Time: 10 sec
Decay Time: 10 sec
Sustain Time: 10 sec
Release Time: 10 sec

Modulation Generator (LFO)
Waveform: Positive Sawtooth, Triangle, Negative Sawtooth, Wide Pulse, Square, Narrow Pulse
Frequency: 0.1 to 20 Hz

Manual Controller
Control wheel (centre click)
Momentary switch --> Ground

Power Switch and Volume
Volume

Indicators
Keyboard Trigger LED
Modulation Generator Rate LED
Power On LED
External Signal Processor Control Section
Input Signal Level
Low-Cut Frequency: 50 Hz to 2.5 kHz
High-Cut Frequency: 100 Hz to 5 kHz
CV Adjust
Threshold Level

Input and Output
Signal In
Amplifier Out
Band-Pass Filter Out
CV Out: 0 to +8.4 V
ENV Out: 0 to +5 V
Trig Out: +5 V --> Ground

Indicators
Peak Indicator LED
Trigger Indicator LED
Control Section
Input Signal Level
Low Cut Frequency: 50 Hz to 2.5 kHz
High-Cut Frequency: 100 Hz to 5 kHz
CV Adjust
Threshold Level

Input and Output
Signal In
Amplifier Out
Band-Pass Filter Out
CV Out: 0 to +8.4 V
ENV Out: 0 to +5 V
Trig Out: +5 V --> Ground

Indicators
Peak Indicator LED
Trigger Indicator LED
Patch Panel Keyboard
Keyboard Control Voltage Output (Exponential): 0 to +8 V
Keyboard Trigger Output: +5 V --> Ground
VCO-1 + VCO-2 Control Voltage Input (Linear Response): 0 to +8 V
VCO-2 Control Voltage Input (Linear Response): 0 to +8 V

VCO
VCO-1 + VCO-2 External Frequency Control Input (Oct/V): -5 to +5 V

VCF
External Signal Input: 3 V p-p maximum
External High Pass Filter Cutoff Frequency Control Input (2 Oct/V): -5 to +5 V
External Low Pass Filter Cutoff Frequency Control Input (2 Oct/V): -5 to +5 V

VCO + VCF
Total External Modulation Input (T.EX): -5 to +5 V

VCA
External Initial Gain Control Input: 0 to +5 V

EG
EG 1 Envelope Signal Normal Output: -5 to 0 V
EG 1 Envelope Signal Reverse Output: +5 to 0 V
EG 1 + EG 2 Trigger Input: --> Ground
EG 1 Trigger Input: --> Ground
EG 2 Envelope Signal Reverse Output: +5 to 0 V

MG
Triangle Output: Positive Sawtooth, Triangle, Negative Sawtooth (5 V p-p)
Rectangle Output: Wide Pulse, Square, Narrow Pulse (0 to +5 V)

Noise Generator
Pink Noise Output: 5 V p-p
White Noise Output: 5 V p-p

Sample and Hold
Clock Trigger Input: --> Ground
Sample Signal Input: 5 V p-p maximum
S/H Output: 5 V p-p maximum

Modulation VCA
Control Voltage Input: 0 to +5 V)
Signal Input: -5 to +5 V
Signal Output: -5 to +5 V

Manual Controller
Control Wheel Output: -5 V <-- 0 V --> +5 V
Momentary Switch Output: --> Ground
Connectors 1 x 1/8" (3.5 mm) TS mono mini Signal Output (2 V p-p, output impedance 3.5 kOhms)
1 x 1/8" (3.5 mm) TS mono mini External Signal Input
1 x 1/8" (3.5 mm) TRS stereo mini Headphone
1 x 5-pin DIN MIDI In*
1 x USB Type-B**
* Only note messages received (velocity not used)
** Only note messages transmitted and received (velocity not used)
Power Requirements 9 VDC via included external power supply
9 W consumption
Dimensions (WxDxH) 19.4 x 10.1 x 8.2" (493 x 257 x 208 mm)
Weight 4.8 kg

In The Box

  • Korg MS-20 Mini Monophonic Analog Synthesizer
  • External Power Supply
  • 10 x Patch Cables

Reviews

5.0 (based on 1 rating)
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  • Laurence
    My School had an original version and I would mess with it all the time creating new sounds and patching up the various stages to see what they did. It's a good way to learn synthesis and amazing what the range of sounds you can create is. Unfortunately the originals were kinda scratchy and the keyboard wasn't all that nice to play. This thing is great value for money and benefits from modern parts.
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Details

  • Product: Korg MS-20 Mini Monophonic Analog Synthesizer
  • Manufacturer: Korg
  • Model: MS-20 mini
  • SKU: MS20MINI
  • RM Product #: 28141

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