Yamaha's programmable "M" series monosynth from 1979: two VCOs, a switchable high/band/low-pass resonant filter, a sine-wave third oscillator in the VCA section, and 8 patch memories — rare on an analog mono of this era. Big, warm Yamaha CS-series tone. Made in Japan. The monophonic precursor to the CS-80.
CONDITION- Fully functional. Every section tested: both VCOs, all three filter modes, both envelopes, LFO, noise, pitch and mod wheels.- All 37 keys trigger cleanly. All sliders, knobs and switches work with no dead spots or dropouts.- All 8 memory locations store and recall correctly, and hold after power-off.- Powers up and runs stable on 120V.- Cosmetically good for its age: light wear on the wood end cheeks, all slider caps present and original. See Photos for details.- From a smoke-free professional Los Angeles studio.
FEATURES- 37-key keyboard, monophonic- 2 VCOs: 64' to 2' ranges, triangle / sawtooth / pulse (variable width + PWM), detune- Noise generator, plus a sine-wave "third oscillator" in the VCA section- VCF: switchable high-pass / band-pass / low-pass with resonance and its own ADSR- VCA with its own ADSR- LFO: sine, sawtooth, reverse sawtooth, square, sample & hold- 8 programmable patch memories plus manual panel mode- Pitch wheel with selectable range (octave / fifth / third); mod wheel routable to VCO, VCO+VCF or VCF- CV/Gate in and out — Yamaha Hz/V standard (works with Kenton and other Hz/V-capable MIDI-to-CV converters). No MIDI.- Approx. 33.4" x 17.9" x 7"; approx. 35 lb (16 kg)
WHAT'S INCLUDED- Yamaha CS-20M synthesizer- Power cord
SHIPPING- Professionally packaged, fully insured.- Ships via UPS from Los Angeles, CA.- US recipients only.