■ The CS20m is a simpler version of bigger cs40m and cs70m which they share same structure.
It features 37 keys with no velocity; it features Pitch wheel (selectable range of octave, fifth, or third) + Modulation wheel (VCO, VCO + VCF, or VCF). It's quite bulky and heavy!
■Oscillators
Monophonic synth with Oscillators VCO- 2 +1 sine osc. in VCA section
Triangle, sawtooth, pulse (50-90% pulse width adjustable)- range selection of 64′, 32′, 16′, 8′, 4′, 2′ Both VCO’s individually detunable + 1 Noise generator
■ Filter
Analog Voltage Controlled Filter with individual ADSR envelope. High Pass, Band Pass, Low Pass selectable
■LFO modulator
1 modulator with selectable waveforms: Sine, Sawtooth, Reverse Sawtooth, Square, Sample & Hold adjustable depth modulation.
■ Memory
The CS20M features 8 programmable patch banks that can be stored on the 8 push puttons for immediate recall. The memory is maintained by two AA batteries in the dedicated slot under the hood.