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The SSM2164, THAT 2162 or V2164 IC is a quad voltage controlled amplifier (VCA) with 100 dB dynamic range and 0.02% THD.[1]


Designed by Dave Rossum the SSM2164 is based on his 1979 design of the SSM2010.[2]


Each VCA offers current input and output and a ground referenced –33 mV/dB control port. It will operate over a supply voltage range of ±4 V to ±18 V.[1]

Clones and equivalents

  • THAT 2162 dual VCA, two 2162s are needed to replace one 2164.[3]
  • CoolAudio V2164
  • Sound Semiconductor SSI2164

Synthesizers etc. using the SSM2164


See also


Further reading

  • State variable VCF and VCA by Thomas Henry, An Analog Synthesizer for the 21st Century,, 2012, p. 15, schematics and parts lists only, no explanatory text.

External links

Data sheets

Projects and circuits