Cwejman S1 MK2 SN 260

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via this auction

"This is a very rare synth made by hand in very limited numbers!

Totally mint aside from a tiny tiny chip in the paint which is noted in the last picture and the only why I have listed it in excellent condition.

These never come up for sale and for a good reason. It is arguably the greatest analog monophonic synth ever made!

Power cable and original packaging is included too!

Specs from SOS below!

SOUND SOURCES

VCOs: Three, with FM and sync.
VCO waveforms: Seven, including three with PWM.
PW range: Five to 95 percent.
Portamento: 1ms to 10 seconds.
Noise generator (with white, red and 'low' outputs).
Ring modulator.
LFO

Range: 0.05 to 50Hz.
LFO waveforms: Seven.
FILTERS & MIXERS

Multi-mode filters: Two, with variable CV tracking from 0 to 200 percent.
Filter topoology: Low and high-pass 12, 24, or 36dB-per-octave filters, plus a six, 12, or 18dB-per-octave band-pass filter.
Two filter-input mixers.
One freely patchable mixers.
ENVELOPE GENERATORS & VCA

Envelope generators: Two, with voltage control of all attributes.
Minimum envelope time: 0.5ms.
Maximum envelope time: 20s.
Output amplifier with overdrive, logarithmic and linear EG responses.
PATCHING

Front-panel patch points: 65.
Rear-panel patch points: 14.
MIDI

MIDI In, Out & Thru.
Patchable MIDI-CV controllers: Four.
Rear-panel analogue interfacing: 1V-per-octave pitch CV, Trigger, S-Trig, and Gate.
POWER

Input: 115/230V, manually selected."