Nice work, man ! Definitely makes me want to get my hands on building one with faders ( im currently restoring a simple early Seck 5+2, one of the early ones still called Pro Kit...Sturdy but simple enough to widen my knowledge on summing circuits- Already has two sends one as cue one as effect, 3 freq eq and pan pot...so its enough to get ideas and work it out from there).
So maybe ill get my hands on this one sometime soon(skint at the moment with other projects).
You definitely make me want to do it asap though lol