Elka synthex

YouTube via emssynthi100
"this synthex is for sale on ebay. someone asked if all the keys work and a demo of the filter. i dont think you can hear the bottom end well but if you look closely you can see what the filter sweeps are doing to my monitors."
images via this auction
Not sure if it's the same one as in the video. It's the only one I see listed as of this post. Update: I have confirmation it is the same Synthex.

Note this seller has the user manual and schematics on CD along with a ton of other manuals.