Available as an assembled Module and as a DIY project.
This Module is currently available.
DC coupled mixer/CV processor
The UTILITY MIXER is a DC coupled audio processor that can be use with audio signal and CV signals. There are 2 attenuverting inputs for deep CV processing and one unity gain input that sums to the mix output.
This module can be used as an audio mixer or CV processor.
https://4e92niknx7wnnbze-56573853901.shopifypreview.com/products/utility-mixer
These merchants probably sell this module. Huh?