The only info I've found is from an Italian webpage-see my earlier post with links to this, plus the GEMClub, of which I am not yet a member. I have also gotten some info from a Generalmusic rep in the US-I think based in Chicago. My guess is that the GEMClub probably has all the technical documentation one could use-I will probably sign on sometime soon if only to be able to keep my own instrument operational! And it does have a great combination of "bread & butter" sounds as well as many classic electronic instrument sounds. Even the acoustic piano seems not so bad in thicker arrangements, but is it's weak point I think. Later!