Available as an assembled Module and as a DIY project.
This Module is currently available.
Old school voltage controlled amplifier
Old school voltage controlled amplifier.
https://www.skullandcircuits.com/vca-1-2/
These merchants probably sell this module. Huh?
Included in 61 Racks, 31 are public:
Waldorf WALDORF DVCA1 MODULO 2 VCA
VoicAs 2^VCA Dual 1u VCA
VoicAs 2^VCA 1U Dual VCA
Takaab 2VCA v1
L-1 Tube VCA 2П2П
Doepfer A-147-2