…and just to elongate this thread, there were several styles of Pratt-Read keyboards.
Most used the same key and pivot mechanism, but the early ones had different contacts (not J-wires) and thus had an additional little mechanism under each key.
On these keyboards, there was a small dome (known as a bell crank dome) that would rub (lubed) on the underside of the key.
It made the keyboards feel a little different than later J-wire units.
Keyboards of this earlier style included all Mini D’s, the Polymoog, early Odys, 2600s, 2500s, and most Moog modular keyboards.
To make up for their additional pressure, they used slightly lighter springs.
The polymoog however had heavy springs since they were were weighted keys.
Later PR keyboards used all plastic keys also and didn’t feel quite as nice.
These can be found on later Oberheims and some Arps.
Sooo.. not all Pratt-Read keyboards feel the same.
Forgot about those… had one like that when I built my PAiA in 1981 and it did not feel as nice as the earlier one in the OB-X
I wondered if PR made reverse color keybeds, and they did… on the lookout for a certain instrument so I can scavenge the keyshells and put them on my OB-X 
I ended up swapping out a set of those all plastic P-R keybeds that was in a late model orange/black Odyssey I was rebuilding. The metal channel “J” wire keybed did have a better and more solid feel/action. A pic to see the difference in the much cheaper all plastic version.
The very early Moog modular 950 keyboards used a different kind of “J” wire. These were the original ones with solid walnut sides and long/deep tops made in '66/'67. They had long metal channels on the keys, with nylon ends that pushed metal contacts into the “J” wire. They certainly don’t make them like that anymore. A littly clunky, but a somewhat weighted action.
A close up of the original Moog “J” wire contacts.
You get what you pay for, and today cheaper sells.
I didn’t mean for my comment to get the thread hijacked 
. The Prodigy I played must have used the plastic keys, it felt worse than both Stage one and two Phatty keybeds.
Can anyone comment on the feel of the Sub when compared to the Phatty? With so few keys it would be nice if they at least played good.
As always, the advice to “try before you buy” would apply here. Some people like the sound of those DSI filters, some hate them. Same with the DSI oscillators.
However, it is nice to see a new 44-key analog synth.
Well, I personally think that the DSI sound suits polyphony better. I find their analogues to have a brassy and/or stringy Oberheim quality to them, which maybe isn’t so strange considering the heritage of the chip they use (Marion Pro Systems, Oberheim Matrix 1000, etc), and that sound, imho works very well for chords, but not so much for lead or bass. But that is my taste/opinion.
Back to original thread … evolution of Sub Phatty…
I think a couple of CV outs might be good. We have CV ins so why not out ??
M
I can confirm that the sub’s keyboard does indeed feel very nice. Not as nice as the Voyager, but nice.
YES! like a Japanese TRANSFORMER toy ~
I want a MODULAR TransPhatty please, that folds up like a ROOMBA, floor vacuum with a cat seat http://www.youtube.com/watch?v=tLt5rBfNucc