My XP module arrived about a week ago .

I must say a special big thank you to Dave "on the other side of the world " for his interest and help with the Gem Product .

Let me tell you folks a digital Concerto is very difficult to midi up correctly to a midi keyboard /expander due to so much midi data flowing from the Concerto into other midied equipment and totally confusing the poor expander .
With the concerto it is not possible to disable the system exclusive messages as the Concerto would stop functioning correctly .

Dave took this problem on board and sent many e mails to the dealer who sold me the XP and Dave came up with a number of solutions .
He has never seen or heard of the Concerto DA200 midi /accoustic accordion .
The Gem XP has approx 120 midi filters so that various aspects of the concerto signals could be blocked so as not to confuse the XP module .

Result ... Just what I've been looking for with an expander .

Once I get the hang of the expander I will be happy to send in a little report .

Regards ..............Giovanni (Norwich Norfolk England)
Ps , for you owners of conventional midi accordions the Xp will midi up very easily as it has two presets designed just for "normal midi accordions "