VCO 3340, Transistor Ladder VCF, KS-20 Filter, Dual VCA and Quantizer are among Kassutronics most popular products.
A basic but complete application of the 3340 VCO
Classic Minimoog-style lowpass filter
The ASR envelope is a static envelope generator with loop feature
CEM3360-based dual VCA
MS-20 style VCF
Two channel cyclic quantizer
quad precision attenuverter / mixer