SO2R with 2 sound cards?

ERIC OLSON
 

Is it possible to run SO2R with 2 sound cards?  One would be my simple USB sound card to the K3 and the other a Rigblaster Advantage to a FT1000MK5.  Or not possible in Windows?  Only one can be active at a time?  Tried last night and didn't work but thought of a few things I might change and try again but wondering if N1MM or Windows simply can't do that. Had 2 separate PTT set up which might be bad...?

Thanks 
Eric N7EPD 

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