Thanks!

Your diagram helps me a lot. I'll try it with the USB DAC,
if everything goes wrong I'll buy something else.

Hey guys, don't know if i'm blind or not, but i can't find an existing guide/topic for this one. So here's my n00b problem: I bought this USB sound card: https://www.amazon.de/gp/product/B008KGL2L2/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 its similar to the card thats mentioned in the wiki under ...