
Crux
Features:* dual VCA around discrete transistor OTA core* switchable linear or exponential VCA response* switchable between Audio (AC) and CV (DC) use* starts to pleasantly saturate beyond levels of 10Vpp (clips at 20Vpp)* envelope (unipolar) 0 to +5V CV input* modulation (bipolar) -5V to +5V CV input* smart normalization of unused envelope inputs to allow for full-range bipolar modulation The VCAs in the Crux are built around newly designed operational transconductance amplifier (OTA) circuits, built from discrete transistors. If you need a super-accurate VCA, this is not for you. However, if you appreciate the warm and lively nature of discrete electronics, the Crux will serve you well. A phrase often used among modular musicians is “you can never have enough VCAs”. Probably followed by “I need more rack space”. That’s why the Crux is a compact module, simple and straight, a short signal path, and no frills. As there are no frills, there’s little fancy text here. It can do what a VCA does. It can do it twice. It can do it linearly or exponentially, and does it on audio or CV. And that’s it!
History Coming Soon
We're compiling the full history of the River Creative Technology Crux. Check back soon for production timeline, variants, notable users, and cultural significance.
