Creamware, a german company, built a series of very nice and authentic sounding DSP based clones of vintage classics
(the Scope series was another product).
Unfortunately they went out of business in spring 07.
I bought the most interesting synths (clones of Minimoog, Arp Odyssey and Prophet 5) from the last production run and
put them all in a common, customised case (MDF sidepanels). I added an active stereo mixer and a common power and MIDI handling.
Nothing fancy at all, but these few additions make it a unique, polyphonic, "vintage"like system with effects and storage
possibilities.