I’m not sure this qualifies as a minimal mixer, but it seems minimalist in spirit. It was beautifully fabricated by lines member Alessio Occhiodoro (@nff - https://www.instagram.com/noisefuel/).
On the right side, it’s an active 5x5 matrix mixer, with independent line- and euro-level inputs, along with separate level controls and output jacks. On the left side, it’s a 5x5 vactrol-based VCA matrix, where each VCA can be switched into the corresponding intersection on the right. There’s a slew / smoothing control (white), along with an attenuverter (grey) for each VCA. When the attenuverter is in negative territory, the VCAs can produce a ‘ducking’ effect… in fact Alessio calls them ‘pluck and duck’ VCAs.
I’ve become interested in experiments with feedback, and this seems like a great platform for exploration. The VCAs make the mixer especially flexible (sounds produced on the matrix side can be ‘struck’ with a trigger, or it can be used differently as a voltage controlled mixer, etc). Very excited to start playing with this.