The Kaossilator Pro is a Dynamic Phrase Synthesizer/Loop recorder from KORG, and I just got mine this week !
However, the version I was able to find for a reasonable price is the Pro one, which is discontinued... It has been replaced by the Pro + version which looks almost the same, but offers 50 more programs.
I played a little with it, but soon I wondered if it was possible to upgrade it to the "+" version. After all, both version might share the same hardware (HW) ? It is quite possible since I do not see any real improvement that would justify a entirely new HW revision. Maybe a bigger ROM to fit the new programs ?