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Korg
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Korg Ms20mini Analog Monophonic Synth

SKU: US 625666
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Korg MS-20: Picture 1 regular
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About the Korg MS-20

The Korg MS-20 Mini is a fully functioning analog synthesizer featuring the circuitry of the iconic, late 1970's MS-20 synthesizer, but shrunk to 86% of the original size. Its versatile patching options, analog filters and the ability to process external signals makes this diminutive powerhouse very attractive to the analog synthesizer 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-pass and low-pass filters with resonance and distinctive distortion can deliver radical sounds when the filters are pushed into self oscillation. Additionally, external sources such as an electric guitar or vocals can be used to control the synthesizer or have the source manipulated by the filters. A flexible hard-wire patching system provides endless possibilities.

The synthesizer 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.

Korg MS-20 Features

  • Miniature MS-20 featuring a complete replica of the original analog 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)
  • Extremely flexible patching system
  • MIDI In and USB connector
  • Replicates every detail of the original, down to the package binding and the included manual

Korg MS-20 Specifications

Keyboard 37-note mini keyboard
Polyphony Monophonic
Multitimbral No
Synthesis Method Voltage controlled analog
Control Section 1 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
Control Section 2 Portamento: Maximum 10 s
Frequency Modulation Intensity by MG/T.EXT: -5V to +5V
Frequency Modulation Intensity by EG1/EXT: -5V to 0V
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: -5V to +5V
Cutoff Frequency Modulation Intensity by EG2/EXT: -5V to +5V
Control Section 3 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: -5V to +5V
Cutoff Frequency Modulation Intensity by EG2/EXT: -5V to +5V
Envelope Generator 1
Delay Time: 10 s
Attack Time: 10 s
Release Time: 10 s
Envelope Generator 2
Hold Time: 20 s
Attack Time: 10 s
Decay Time: 10 s
Sustain Time: 10 s
Release Time: 10 s
Modulation Generator (LFO)
Control Section 4 Waveform: Positive Sawtooth - Triangle - Negative Sawtooth, Wide Pulse - Square - Narrow Pulse
Frequency: 0.1 Hz to 20 Hz
Manual Controller
Control Wheel (center click)
Momentary Switch --> Ground
Power switch and Volume
Volume
Indicators
Keyboard Trigger LED
Modulation Generator Rate LED
Power On LED
External Signal Processor 1 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 +8.4V
ENV Out: 0 to +5V
Trig Out: +5V --> Ground
External Signal Processor 2 Indicators
Peak Indicator LED
Trigger Indicator LED
Control Section
Input Signal Level
Low Cut Frequency: 50 Hz to 2.5 kHz vHigh 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 +8.4V
ENV Out: 0 to +5V
Trig Out: +5V --> Ground
Indicators
Peak Indicator LED
Trigger Indicator LED
Patch Panel 1 Keyboard
Keyboard Control Voltage Output (Exponential): 0 to +8V
Keyboard Trigger Output: +5V --> Ground
VCO-1 + VCO-2 Control Voltage Input (Linear Response): 0 - +8V
VCO-2 Control Voltage Input (Linear Response): 0 - +8V
VCO
VCO-1 + VCO-2 External Frequency Control Input (Oct/V): -5V to +5V
VCF
External Signal Input: 3Vp-p maximum
External High Pass Filter Cutoff Frequency Control Input (2 Oct/V): -5V to +5V
Patch Panel 2 External Low Pass Filter Cutoff Frequency Control Input (2 Oct/V): -5V to +5V
VCO + VCF
Total External Modulation Input (T.EX): -5V to +5V
VCA
External Initial Gain Control Input: 0 to +5V
EG
EG 1 Envelope Signal Normal Output: -5V to 0V
EG 1 Envelope Signal Reverse Output: +5V to 0V
EG 1 + EG 2 Trigger Input: --> Ground
EG 1 Trigger Input: --> Ground
EG 2 Envelope Signal Reverse Output: +5V to 0V
MG
Patch Panel 3 Triangle Output: Positive Sawtooth - Triangle - Negative Sawtooth (5Vp-p)
Rectangle Output: Wide Pulse - Square - Narrow Pulse (0 to +5V)
Noise Generator
Pink Noise Output: 5Vp-p
White Noise Output: 5Vp-p
Sample and Hold
Clock Trigger Input: --> Ground
Patch Panel 4 Sample Signal Input: 5Vp-p maximum
S/H Output: 5Vp-p maximum
Modulation VCA
Control Voltage Input: 0 to +5V)
Signal Input: -5V to +5V
Signal Output: -5V to +5V
Manual controller
Control Wheel Output: -5V <-- 0V --> +5V
Momentary Switch Output: --> Ground
Connectors 1 x 1/8" (3.5 mm) TS mono mini Signal Output (2Vp-p, output impedance 3.5kohm)
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
Power Requirements 9V DC via included external power supply
9W consumption
Dimensions (WxDxH) 19.4x10.1x8.2" / 49.27x25.65x25.65 cm
Weight 10.6 lbs / 4.80 kg
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