<HTML>I serviced one of these from that era when new. The mechanism for the electical contacts to engage the silent and MIDI features is difficult to regulate such that the let-off in the regular piano action is acceptable. Basically, there needs to be more lost motion than usual, and let-off needs to be at least 1/8th inch, and possibly a little more. This leaves soft playing with the regular action inconsistent. For these reasons you need to value this hybrid down, because other brands (I'll leave this to your obvious conclusions) do not present this problem.                                  Michael Meade, RPT </HTML>