This is the best master keyboard ever built. Very solid construction, good keyboard feel (not too heavy, not too soft) 8 zones with programmable dinamics and aftertouch curves, 8 programmable faders, 3 weels, 8 pedals. Incredible MIDI power: 2 midi in, 2 midi thru, 8 midi out with internal patch by. A powerful user interface with graphic diplay and mouse interface help the musician to control this 'monster'. A lot of memory is built-in to store Program change tables and system exclusive messages. What can we ask more ?