Multi-timbral synths and samplers can be played MPE-like by putting the same program/preset on all midi channels.
MPE sends each note, CC, aftertouch and pitchbend to a different midi channel.
Cubase input transformer is used for a 16ch to 8 conversion. This method gives note interference so now and then. When the MPE device sends midi on, for example, ch 2 and 10, both notes will appear on ch 2 ont the Kawai K4 side which means CC/Aftertouch/pitchbend interference.