The concept of Evolver is to generate new sounds that, well, evolve. Sounds that change, subtly or dramatically. Look back at the Prophet-VS and Korg Wavestation as previous examples of instruments that are never static. And, I have to admit, analog still has a warmer, more natural sound, partially because it is never perfect; it has that natural slop. Yes, there are some very cool digital synths out there also; even some that mathematically emulate analog synths have a nice edge to them. I don't think analog is always better, or that digital is always better; they're just different.
So, Evolver has the analog components, and also some digital components. I'm trying to generate new sounds via the interaction of analog and digital electronics. Best of both worlds. I've always liked feedback in synths, so there is extensive use of tunable feedback in Evolver, interconnecting the digital feedback loops with the analog electronics. I like sounds that blow up, predictably or not. When sounds blow up digitally, it can hurt your ears - I've done that enough times designing the soft synths! However, when Evolver goes ape, the analog circuitry actually keeps the signal in line just enough that the result is wild sounds, not pain. Plus, the feedback constantly moves, and differently in each channel (each channel has their own independant feedback path), giving some very cool stereo ambience to the sounds.