Das ist ja wohl wieder ein kloares ding, "Kniefonium der Röhren Synth"
I've spent several months with this project, and now I'm beginning to believe, that I will actually finish it. Missing from the photos are of course front panels, keys, power supply, all semiconductor stuff etc. Photos and early CAD drawings here:
https://picasaweb.google.com/jonte.knif ... 7611939218
https://picasaweb.google.com/jonte.knif ... 3748053346
Shortly: Oscillators, ring modulator, mixer, moog type filter, noise source, Vari Mu type VCA and output amp are tube units. Everything else is IC and some discrete. Don't ask for schematics, I spent full three months on the circuits alone.
Tuning systems can be changed with small plug in boards. Oscillators have saw, triangle, pulse and very crude sine. There is sync and FM modulation. Keyboard will have after touch but not dynamics. Three octaves of keys, in imitation ivory and imitation tortoise shell.