Korg MS-20 Mini Monophonic Synthesizer

Control Section

1. Keyboard

C – C: 37-notes (3 octaves), mini keyboard designed specifically for the MS-20 mini

2. Voltage Controlled Oscillator 1 (VCO 1)

Scale (32', 16', 8', 4') (6 octaves, +cent, -cent)
Wave form (Triangle, Sawtooth, PW-Square, White Noise) (4 modes)
Pulse width adjust 1:1 - 1:infinity

3. Voltage Controlled Oscillator 2 (VCO 2)

Scale (16', 8', 4', 2') (6 octaves, +cent, -cent)
Wave form (Sawtooth, Square, Pulse, Ring modulator) (4 modes)
Pitch (± 1 octave) 　 　

4. VCO Master control

Master tune (± 100cent)
Portamento (max. 10sec)
FFrequency modulation intensity by MG/T.EXT (-5V - +5V)
Frequency modulation intensity by EG1/EXT (-5V - 0V) 　 　

5. VCO Mixer

VCO 1 Level
VCO 2 Level

6. Voltage Controlled High Pass Filter (VCF HPF)

Cutoff frequency (50Hz - 15,000Hz)
Peak (flat - self OSC)
Cutoff frequency modulation intensity by MG/T.EXT (-5V - +5V)
Cutoff frequency modulation intensity by EG2/EXT (-5V - +5V) 　 　 　

7. Voltage Controlled Low Pass Filter (VCF LPF)

Cutoff frequency (50Hz - 15,000Hz)
Peak (flat - self OSC)
Cutoff frequency modulation intensity by MG/T.EXT (-5V - +5V)
Cutoff frequency modulation intensity by EG2/EXT (-5V - +5V) 　 　 　

8. Envelope Generator 1

Delay time (10sec)
Attack time (10sec)
Release time (10sec) 　 　

9. Envelope Generator 2

Hold time (20sec)
Attack time (10sec)
Decay time (10sec)
Sustain level (0V - 5V)
Release time (10sec)

10. Modulation Generator (LFO)

Wave form (Positive Sawtooth - Triangle - Negative Sawtooth, Wide Pulse - Square - Narrow Pulse)
Frequency (0.1Hz ～ 20Hz)

11. Manual controller

Cntrol wheel (center click)
Momentary switch -->GND

12. Power switch and Volume

Volume

13. Indicator

LED (KBD trigger, Modulation Generator rate, Power ON)

External Signal Processor

1. Control section

Input signal level
Low cut frequency (50Hz - 2,500Hz)
High cut frequency (100Hz - 5,000Hz)
CV adjust
Threshold level

2. Input and Output

Signal In
Amplifier Out
Band pass filter Out
CV Out (0 - +8.4V)
ENV Out (0 - +5V)
Trig Out (+5V-->GND)

3. Indicator (LED)

Peak indicator
Trigger indicator

Patch Panel

1. Keyboard

Keyboard control voltage output (Exponential) (0 - +8V)
Keyboard trigger output (+5V-->GND)
VCO-1 + VCO-2 control voltage input (Linear response) (0 - +8V)
VCO-2 control voltage input (Linear response) (0 - +8V)

2. VCO

VCO-1 + VCO-2 external frequency control input (OCT/V) (-5V - +5V)

3. VCF

External signal input (3Vp-p max.)
External High pass filter cutoff frequency control input (2OCT/V) (-5V - +5V)
External Low pass filter cutoff frequency control input (2OCT/V) (-5V - +5V)

4. VCO + VCF

Total external modulation input (T.EXT) (-5V - +5V)

5. VCA

External initial gain control input (0 - +5V)

6. EG

EG 1 envelope signal normal output (-5V - 0V)
EG 1 envelope signal reverse output (+5V - 0V)
EG 1 + EG 2 trigger input (-->GND)
EG 1 trigger input (-->GND)
EG 2 envelope signal reverse output (+5V - 0V)

7. MG

Triangle output (Positive Sawtooth - Triangle - Negative Sawtooth) (5Vp-p)
Rectangle output (Wide Pulse - Square - Narrow Pulse)(0 - +5V)

8. Noise Generator

Pink noise output (5Vp-p)
White noise output (5Vp-p)

9. Sample and Hold

Clock trigger input (-->GND)
Sample signal input (5Vp-p max.)
S/H output (5Vp-p max.)

10. Modulation VCA

Control voltage input (0 - +5V)
Signal input (-5V - +5V)
Signal output (-5V - +5V)

11. Manual controller

Control wheel output (-5V<--0V-->+5V)
Momentary switch output (-->GND)

12. Signal out

Signal output (mono 1/8" mini phone jack, 2Vp-p output impedance 3.5k Ω)

13. Head phones

Head phones output (Stereo 1/8" mini phone jack, 33 Ω 48mW)

14. USB

Type B, USB-MIDI Input/Output
*Only note messages (velocity is not used) can be transmitted and received.

15. MIDI

MIDI Input
*Only note messages (velocity is not used) can be transmitted and received.

Others

Power Consumption

9W

Power Supply

DC9V

Dimensions
(W x D x H)

493 ×257 × 208 mm / 19.41 x 10.12 x 8.19 inches

Weight

4.8 kg / 10.58 lbs.

Accessories

AC adaptor (9V/1.7A), Patch Cord x 10

For More info check out; https://www.korg.com/uk/products/synthesizers/ms_20mini/index.php