Somewhere he explains that it’s a module from frequency central that he uses to add an octave switch to the braids. It operates on cv only. It can do more, but he only uses that feature, if I remember correctly…
I have had a KOSMO octaver on my TODO list for a long time now with two false starts (based on @analogoutput’s dacino), might have to revive that project now that I’ve figured out how to tame KiCad…
I would like to have the octave switch together with a glide and a detune, like the cosmic superspreader and it should have the connections for Sam’s VCOs
Some day I might design it…