AI Synthesis has released the AI007 Quad VCA/Mixer in both a built and guaranteed version, as well as in kit and PCB/Panel format. This is the story in their own words...
The AI007 Quad VCA Mixer is a compact, high quality, and flexible way to control voltage (audio or cv) in your modular system). Each of the four inputs are DC coupled, allowing the amplitude of CV signals as well as audio rate signals to be voltage controlled. The outputs are also normalled together into a mixer, allowing the AI007 Eurorack Quad VCA Mixer to be used as a voltage controlled mixer. Once a cable is patched into a VCA output that output is removed from the mixer signal, allowing each channel to be used independently, giving users four VCAs in total. A dedicated knob shapes the curve response from Linear to Exponential.
Following the tradition of the other eurorack modules, the AI001 Multiple,AI002 Mixer, and AI003 Looping ADSR, the module has a full video how-to build guide. Unlike some DIY companies that focus solely on providing kits, AI Synthesis has an educational mission and our kits and documentation are aimed at those who have never held a soldering iron. PCBS are professionally manufactured, and all panels are aluminum.
Pricing and Availability:
Built and tested: $189
Full kit: $109
See website for other options