The Technics KN5000 comes with a built-in sequencer for recording your own music. The polyphony is 64, which is adequate for general playing but a bit low for high end composing work.
The on-board effects are great and the best part is the availability of a built in hard drive. On the down side, there is no provision for sound expansion.
Ease of Use
The design and layout is very easy to use; the preset sounds are quite good, and the manual is easy to understand.
Though almost everything can be edited quite easily, programming certain effects can be a bit tedious. Besides, no expansion possible of the onboard waveforms!
Conclusion
The Technics KN 5000 is a good keyboard for intermediate players. It is great for most general things but may be not for professional work. In terms of the number of presets as well, they seem to be limited I number. But it has a good set of special effects and the quality of the sounds, styles is very good.