Befaco A*B+C

This might look like very boring module but it can fill many roles, both for CV and audio processing. I mostly use it as a CV mixer, but it can be a VCA , an offset-attenuverter, or even a ring modulator. It's well made, no noise issues that I can detect, the controls are big enough, feel smooth and are easy to adjust. The bicoloured LEDs that show the current signal levels are a nice bonus. The small footprint means the front panel is a bit crowded when all the cables are plugged in, but it's not a problem in practice, and if it was bigger it would't fit in my rack!