Yamaha DTXpress/DTXplorer/DTXtreme

hi all,
i am going to have an live performance 
two days ago, i plan to use my dtxpress.
All the instruments will be plug into 
the amp system of the hall.
i don't have any experience with dtxpress
in live situation... can any one give me
some advice or sugestion? is there anything
i should pay special attention to? 

thanks!
(my dtxpress is the old model, btw)

kevin

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