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The K-2 Synthesizer features a pure analog signal path and dual authentic VCOs with four selectable waveforms each, allowing for versatile sound creation.
The semi-modular architecture of the K-2 Synthesizer allows you to easily recreate the inspired sounds of 1980s and '90s progressive rock, wave, EDM, and synth-pop music synthesizer tracks.
The 16-note Poly Chain function allows you to combine multiple synthesizers for up to 16-voice polyphony, improving reliability and stability.
Yes, the K-2 Synthesizer is designed to be easily transferred into a standard Eurorack case for seamless integration into your existing system.
The K-2 Synthesizer offers 36 intuitive controls and a multi-I/O patchbay for extensive tone-sculpting capabilities.
Review Summary
2022-12-11T13:57:38
This is an awesome classic synth. There is an unbelievable amount of information on it out there which makes it even more fun!
Rex K.
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Monophonic
Analog
2 (16 Hz to 1.5 kHz @ 8' and with 4 overlapping ranges)
1 (0.1 to 22 Hz)
1 low pass, 1 high pass (24 dB/octave slope)
VCA, VCF
DC input connector
Push button On/Off
MIDI In and MIDI Thru, 5-pin DIN
Channel selection/ 16 channels
USB 2.0, type B
Output: 1/4" TS, unbalanced, max. 0 dBu
Signal out: 3.5mm TS, unbalanced, max. 0 dBu
1.0 k Ohm
3.5 mm TRS, max. +6 dBu
22 Ohm
Class compliant USB 2.0, type B
Windows 7 or higher
Mac OS X 10.6.8 or higher
Master tune: -5 to +5
Portamento: 0 to 10
Range (VCO 1): 32', 16', 8', 4'
Range (VCO 2): 16', 8', 4', 2'
Pulse width (VCO 1): square to narrow
Waveform (VCO 1): triangular, reverse sawtooth, pulse, noise
Waveform (VCO 2): reverse sawtooth, square, narrow pulse, ring
Pitch (VCO 2): -5 to +5
VCO 1 level: 0 to 10
VCO 2 level: 0 to 10
High pass cutoff frequency: 0 to 10 (10 Hz to 20 kHz)
Low pass cutoff frequency: 0 to 10 (10 Hz to 20 kHz)
High pass peak (resonance): 0 to 10
Low pass peak (resonance): 0 to 10
Filter selector: filter 1/filter 2
Frequency modulation (mg/t.ext): 0 to 10
Frequency modulation (eg1/ext): 0 to 10
High pass filter cutoff frequency modulation (mg/t.ext): 0 to 10
High pass filter cutoff frequency modulation (eg2/ext): 0 to 10
Low pass filter cutoff frequency modulation (mg/t.ext): 0 to 10
Low pass filter cutoff frequency modulation (eg2/ext): 0 to 10
Modulation waveform: sawtooth variation and pulse width variation
Modulation frequency: 0 to 10 (0.1 to 22 Hz)
Modulation frequency rate
Envelope generator 1 delay time: 0 to 10 (0 to 5.5 s)
Envelope generator 1 attack time: 0 to 10 (3.0 ms to 16 s)
Envelope generator 1 release time: 0 to 10 (30 ms to 16 s)
Envelope generator 2 hold time: 0 to 10 (0 to 14 s)
Envelope generator 2 attack time: 0 to 10 (5.4 ms to 9 s)
Envelope generator 2 decay time: 0 to 10 (0.5ms to 15 s)
Envelope generator 2 sustain level: 0 to 10
Envelope generator 2 release time: 0 to 10 (40 ms to 18 s)
Envelope generator action
Signal level: 0 to 10
Low cut frequency: 0 to 10
High cut frequency: 0 to 10
CV adjust: 0 to 10
Threshold level: 0 to 10
Signal in: Auto Pad System
Amplifier: -Infinite to 0 dBmicro
Band pass filter: -Infinite to 0 dBmicro
F-V converter: 0 to +8 V
Envelope follower: 0 to +5 V
Trigger out: to GND
Peak envelope follower
Trigger out
Volume: 0 to 10
Power
In: 5 Vpp
Out: 5 Vpp
Clock in: to GND
In: -5 V to +5 V
Out: -5 V to +5 V
Control input: 0 to +5 V
Pink noise out: 5 Vpp
White noise out: 5 Vpp
Out: to GND
In: to GND
Out: to GND
VCO 1+2 CV in: 0 to +8 V
VCO 2 CV in: 0 to +8 V
VCO 1+2 frequency in: -3 V to +3 V
Cutoff frequency: -5 V to +5 V
Cutoff frequency: -5 V to +5 V
In: 3 Vpp
In: -5 V to +5 V
CV out: 0 to +8 V (exponential)
EG 1 out: 0 to +5 V
EG 1 reverse out: +5 V to 0
EG 1 trigger in: to GND
EG 2 out: -2.5 V to +2.5 V
EG 2 reverse out: -2.5 V to +2.5 V
Out: 5 Vpp
Out: 0 to +5 V
Trigger out, momentary
Inputs and Outputs (TS 3.5 mm)
12 VDC
12 W maximum
5 Degree C - 40 Degree C (41 Degree F - 104 Degree F)
80HP
3.7 x 16.7 x 5.4" (95 x 424 x 136mm)
4.0 lbs (1.8kg)
653341344632

Must have classic
By Rex K.
This is an awesome classic synth. There is an unbelievable amount of information on it out there which makes it even more fun!
After its initial production run from 1978 to 1983, the Korg synthesizers quickly became a favorite among globally renowned artists such as Aphex Twin, Arcade Fire, Daft Punk, Depeche Mode, and many more. The K-2 Analog and Semi-Modular Synthesizer with Dual VCOs is a cost-effective tribute to this iconic synthesizer, retaining all the original features while adding a few modern enhancements.
The K-2 synthesizer allows you to create virtually any sound with precision and ease, thanks to its pure analog signal path and dual authentic VCOs with four selectable waveforms each. The highly flexible VCF and VCA filters further enhance its versatility, making the K-2 a must-have for any keyboard enthusiast.
The K-2 synthesizer is more than just a musical instrument; it's a personal time machine that lets you revisit the past or shape the future of music. Its pure analog circuitry, featuring matched transistors and JFETs, replicates the original VCO, VCF, and VCA designs. This meticulous attention to detail results in an ultra-flexible sound shaping capability, allowing you to create everything from super-fat bass and lead tones to stunning effects and otherworldly sounds.
The K-2 synthesizer comes ready to use right out of the box, thanks to its default signal routing. The semi-modular architecture allows you to easily recreate the inspired sounds of 1980s and '90s progressive rock, wave, EDM, and synth-pop music synthesizer tracks. Alternatively, you can design incredibly fat and original sounds that will set you apart from the crowd.
At the heart of the K-2's sound is its versatile 6 dB High/12 dB Low filter, which allows you to experiment with the High and Low-Pass Cutoff Frequencies and their respective peak (resonance) settings. The K-2's authentic Voltage Controlled Oscillators (VCOs) offer a range of four variable oscillator shapes with variable pulse widths and ring modulation, providing an incredible range for sound creation.
The K-2 synthesizer also features a 16-note Poly Chain function, allowing you to combine multiple synthesizers for up to 16-voice polyphony. This feature significantly improves reliability and stability compared to its predecessors from the 1970s and '80s.
Designed for both studio and road use, the K-2 can be easily transferred into a standard Eurorack case for seamless integration into your existing system. With 36 intuitive controls and a multi-I/O patchbay for connecting external devices at virtually any point in the signal path, the K-2 offers unparalleled tone-sculpting capabilities.
In conclusion, the K-2 Analog and Semi-Modular Synthesizer with Dual VCOs is not just an instrument, but a tool for unleashing your imagination. When the modern performance demands classic analog sound, it calls for the K-2.
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