Well, the original Pulse was their really *only* pure analog machine. The Wave, and Microwave I, both had analog filters to compliment the digital wavetable synthesis. They also had made something that was truly too ahead of it's time that some people on Waldorfian List have often alluded it was what financially broke their back called the AFB, which was like a 4 space rack unit for computer with USB with 16 analog low pass filters, intended to be used with early VST's. Shortly before bankruptcy, they produced a higher tier Q Keyboard only, called the Q+ which simply incorporated that 16 analog filter bank within the exact sound engine of Q Synth, but made it prohibitively expensive and now if you can find the "Ruby Red Q+", it commands easily closer to $4000. USD.
They also produced around same time as the all analog Pulse and Pulse+, a couple standalone analog filter banks, one of which I own called the Mini Works 4-Pole, which has basically everything the Pulse has except the 3 oscillators, having envelopes, LFO's in audio range, and full midi specs with mono input, gate/trigger input of any source with stereo outputs--of which, I have run my Microwave XT through it to add extra warmth because it's essentially same filter type used in Microwave I. Then lastly, the X-Filter, which was dual channel analog filter bank with stereo input and output.
Given the above, Waldorf Analog mono synth does have signature sound--not Moog and not DSI, but can be very warm and nice resonance and very quick envelopes or long with a very easily overdriven filter and can be aggressive as you wish.
I am with you as far as wishing to have a more knobby keyboard version and I happen to like endless encoders but that's very subjective. Also, from newer sound examples posted other day by one of the Sound Programmers on Elektronauts Forum, make me really love the unique analog High Pass Filter on Pulse 2 as well:
https://soundcloud.com/gryke
And here, a demo song made with Pulse 2:
http://www.youtube.com/watch?v=7HIUk...ature=youtu.be