Yamaha DTXpress/DTXplorer/DTXtreme

I've played acoustic drums all my life but am very interested in 
purchasing the yamaha dtxpressII soon.  My question is the following: 
 Is the DTXpressII able to trigger different sounds when the pads are 
hit at different sensitivities? Are there ranges that can be set to 
trigger these sounds?  I'd like to use different acoustically 
recorded sounds of drum kits put into .sfx or .wav file format.  
Please help me! 

regards,
Altay