IC's A....B

AS3372E μP Controllable Signal Processor
Features AS3372ED
+ 2-channel VC input mixer with external input
+ 4-pole low pass VCF & [...]

Single mode OPV with wide input differential voltage range, flexible compensation network design, supply voltages from ±5V to ±18V, low current [...]

Voltage controlled filter (VCF), DIP 18

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2 npn transistos in a TO5-8 package, pin combatible LM394

NPN Transistor array - SMD variant to the CA3046
package SOIC-14

NPN Transistor array
package DIL14

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Double voltage controlled state variable filter (SVF). The two independent filters can be connected together to enable a variety of filter functions. [...]

The AS3310 is a self-contained, precision ADSR type of envelope generator intended for electronic music and other
sound generation applications. [...]

The AS3345 chip is Alfa's modern equivalent of the famous CEM3345 voltage-controlled oscillator.
It provides Ramp, Pulse/Square, Meander and [...]

Quad Operational Transconductance Amplifiers (OTA)
package SOIC-16

Quad voltage exponentially controlled amplifier (VCA)
Package: DIP16

The AS662 consists of two independent OTAs, each with differential inputs and a push-pull output. Both amplifiers share a common supply but operate [...]