It is based on the 4019 sub-module which is found in the classic 2600 semi-modular synthesiser.

http://www.oakleysound.com/vinvca.htm

• 20 mA +12V
• 20 mA -12V
• 0 mA 5V
• 79 mm Depth

Available as an assembled Module and as a DIY project.

This Module is currently available.