This is an all analog synthesizer module with four channels of envelope generation. Each envelope generator has a single input, output and decay knob. It's useful for creating percussive sounds

This is an all analog synthesizer module with four channels of envelope generation. Each envelope generator has a single input, output and decay knob. This is the same envelope generator circuit as used on BMC18. It's useful for creating percussive sounds.

http://www.bartonmusicalcircuits.com/4xd/

• ? mA +12V
• ? mA -12V
• ? mA 5V

Available as an assembled Module and as a DIY project.

This Module is currently available.