Triple Arithmetic Processor

Passage is a triple channel wideband signal mixer and voltage processor. The signal path is suitable for mixing any type of signal, including video, audio and low frequency sources. This module is ideal for expanding the number of CV inputs on any video synthesis module, allowing two modulation voltages to be summed together before being passed to their destination. Given the triple input cascading structure, it is also suited for RGB processing or simple mixing of monochromatic components into full color.

https://lzxindustries.net/products/passage