for fully built modules, pcbs, and DIY kits:
https://zlobmodular.wordpress.com/

http://nerdaudio.com/collections/new-arrivals/products/zlob-modular-t-h-state-variable-voltage-controlled-filter

• 23 mA +12V
• 13 mA -12V
• 0 mA 5V
• 46 mm Depth

Available as an assembled Module and as a DIY project.

No info about availability.