I've tried the leading "Soundcrasher" card and had nothing but problems. This Pexsound pci-e device worked from the instant it was powered on, and hasn't hiccupped once for a few weeks now. A must-buy if you have a speaker system with analog inputs, just be sure you plug into the correct outputs, as there are two sets of black ones, side and rear.
I don't know how they do this but this cheep 24 bit 192Khz audio card with optical in & out does the job which it has to do. I have other much more expensive ones which fail specially in Windows 10 64 bit. No symetric analog in & out but that can be solved with an extra ground loop isolater.