KorgMS-20 Mini Semi-Modular Analog Keyboard Synthesizer
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Korg MS-20 Mini
Korg’s MS-20 Mini is a compact re-release of their legendary MS-20, first released in 1978. The MS-20 Mini’s circuitry is a faithful reproduction of the original, the only major change is that the mini’s size is a mere 86% of that of its predecessor. Additionally, the unit features a MIDI IN and USB connectivity for external synchronization.
For integration into a modular set-up, check out The Harvestman English Tear. The English Tear achieves effortless conversion of V/Oct signals into Hz/V signals recognized by the MS-20 and vice versa. Additionally, the module also converts V- and S-Triggers and affords the ability to scale all input voltages in accordance with the synthesist’s personal taste. (NOTE: The Harvestman English Tear is sold separately.)
MS-20 Mini Features
- Overseen by the engineers of the original MS-20, a complete replication of the original analog circuitry
- 2VCO / 2VCA / 2VCF / 2EG / 1LFO structure
- Self-oscillating high-pass/low-pass filters with distinctive distortion
- External signal processor (ESP)
- Extremely flexible patching system
- Miniature MS-20 that's 86% of the original size
- MIDI IN and USB connector
- Replicates every detail of the original, down to the package binding and the included manual
Keyboard
- C - C 37-notes (3 octaves), mini keyboard designed specifically for the MS-20 mini
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
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)
VCO Master control
- Master tune (± 100cent)
- Portamento (max. 10sec)
- Frequency modulation intensity by MG/T.EXT (-5V - +5V)
- Frequency modulation intensity by EG1/EXT (-5V - 0V)
VCO Mixer
- VCO 1 Level
- VCO 2 Level
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)
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)
Envelope Generator 1
- Delay time (10sec)
- Attack time (10sec)
- Release time (10sec)
Envelope Generator 2
- Hold time (20sec)
- Attack time (10sec)
- Decay time (10sec)
- Sustain level (0V - 5V)
- Release time (10sec)
Modulation Generator (LFO)
- Wave form (Positive Sawtooth - Triangle - Negative Sawtooth, Wide Pulse - Square - Narrow Pulse)
- Frequency (0.1Hz - 20Hz)
Manual controller
- Control wheel (center click)
- Momentary switch -->GND
External Signal Processor
Control section
- Input signal level
- Low cut frequency (50Hz - 2,500Hz)
- High cut frequency (100Hz - 5,000Hz)
- CV adjust
- Threshold level
Input and Output
- Signal In
- Amplifier Out
- Band pass filter Out
- CV Out (0 - +8.4V)
- ENV Out (0 - +5V)
- Trig Out (+5V-->GND)
Indicator (LED)
- Peak indicator
- Trigger indicator
Patch Panel
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)
VCO
- VCO-1 + VCO-2 external frequency control input (OCT/V) (-5V - +5V)
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)
VCO + VCF
- Total external modulation input (T.EXT)(-5V - +5V)
VCA
- External initial gain control input (0 - +5V)
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)
MG
- Triangle output (Positive Sawtooth - Triangle - Negative Sawtooth) (5Vp-p)
- Rectangle output (Wide Pulse - Square - Narrow Pulse)(0 - +5V)
Noise Generator
- Pink noise output (5Vp-p)
- White noise output (5Vp-p)
Sample and Hold
- Clock trigger input (-->GND)
- Sample signal input (5Vp-p max.)
- S/H output (5Vp-p max.)
Modulation VCA
- Control voltage input (0 - +5V)
- Signal input (-5V - +5V)
- Signal output (-5V - +5V)
Manual controller
- Control wheel output (-5V<--0V-->+5V)
- Momentary switch output (-->GND)
Signal out
- Signal output (mono 1/8" mini phone jack, 2Vp-p output impedance 3.5k Ω)
Head phones
- Head phones output (Stereo 1/8" mini phone jack, 33 Ω 48mW)
USB
- Type B, USB-MIDI Input/Output
- Only note messages (velocity is not used) can be transmitted and received.
MIDI
- MIDI Input
- Only note messages (velocity is not used) can be transmitted and received.
Power Consumption
- 9W
Power Supply
- DC9V
Dimensions (W x D x H)
- 493 Ă—257 Ă—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

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