Teisco Kawai S-100P Analog Preset Synthesizer

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The Teisco S100P is a monophonic preset synthesizer that came onto the market rather late in 1979. It was also marketed as the Kawai S-100P. It has a keyboard with 37 keys and 32 preset sounds, including tuba, flute, Hawaiian guitar and whistle as well as four synthesizer sounds. 

The S-100P has a subtractive structure with 1 VCO with sawtooth & PWM in various positions (64′ to 4′), 1 LFO, 1 noise generator, a 24 dB low-pass filter and a VCA, each with its own ADSR envelope. In addition to the touch and effect controls including a growl oscillator (a kind of LFO2 for the VCF), there is also a bender (simple pitch envelope), a downstream high-pass filter and a voice filter. The settings include a pitch bend slider, filter brilliance and modulation rate as well as octave up - down, portamento and glissando time, tuning, volume and three keyboard trigger modes. There is a spring reverb with effect level control and the assignable aftertouch with sensitivity control that can be directed to pitch bend, filter, vibrato amount and growl. The effects section allows you to switch between Porta/Glissando, Hold/Sustain, Note Repeat and Flanger.