I will explain. The 48 MB of wave rom in the PSR9000 is for all the sounds. This includes the panel sounds and the XG sounds. The XG sounds are all that are in the QY100. What I meant and should have said is that the XG chip that is in the QY100 is a newer generation chip, so that the XG sounds will sound somewhat better than the QY70. This is the same XG chip that is in the 9000 pro.
Sorry for the misunderstanding.
George Kaye