The K2000 was one of the classic digital synthesizers of the 1990s, and still holds strong after many years.
The sample ROM on the K series is famously of very high quality, and the synthesis power offered by V.A.S.T. (Variable Architecture Synthesis Technology) is immense. Furthermore, the K2000 could be expanded via "sound blocks", RAM, sampling option, scsi hard disc and lots more. Its Operating System was regularly updated by Kurzweil, and by V3, adding a very capable sequencer, and many sounds.
And the K2000 is also an absolute joy to use as master controller. The keyboard is very expressive and the aftertouch is easy and linear to engage. The MIDI controls are comprehensive and it's easy to use as MIDI master keyboard.