Simple but effective VCA

The Voltage Controlled Amplifier (VCA) is an essential part of any analog synthesizer's architecture. Thomas Henry has designed a low parts count, yet very effective VCA for your modular synth.

http://www.birthofasynth.com/Thomas_Henry/Pages/VCA-1.html#VCA-1/Thomas_Henry_Resources

• ? mA +15V
• ? mA -15V
• ? mA 5V
• 75 mm Depth

Module is available as a DIY project only.

No info about availability.