YEM that allows you to combine the internal drum kits of the PSR sx900?

[victorsp]

Goodnight
Do you think it is difficult for Yamaha to provide this resource?
It would give the psr sx tremendous potential, it would save me constant work of breaking down the battery.
For the record, I'm happy with my psr sx900, so much so that I bought another one for a friend, so I leave it at my parents' house.

greetings to all.