There are Firmware updates http://digitech.com/en-US/software
I know you need to use the headphone out if you want stereo output like for the drums drums.
There also have the Digitech TRIO+ model now.

https://www.youtube.com/watch?v=Xrm0SBa87oU
https://www.youtube.com/watch?v=BONFRv9e-AI