Available as an assembled Module and as a DIY project.
This Module is currently available.
Triple VCA plus fuzz / distortion
This 8HP module contains 3 VCAs and a fuzz / distortion. The VCAs are similar to the ones used in the NLC Cluster; simple OTA-based but work very well.
The fuzz / distortion is part of the bottom VCA and is a typical diode-based affair, on the PCB the space for these are thru-hole so you can install Si or Ge diodes or LEDs. Turn the Fuzz pot to 0 if you just want VCA.
These merchants probably sell this module. Huh?