Sound card for headset

[CptSqrt]

Hello! I really have no idea what should I choose between the next sound cards: Asus Xonar U3, U5 and U7. My headset is HyperX Cloud Core. What are the differences between them ?

 

[ssddx]

https://www.asus.com/us/Product-Compare/?products=tIycUQiYyhKFNAJE,YMNTSKcXSVNoJqPp,iJWbxsC2AVPZkaCQ&b=0

you can compare specs if you wish, but basically an increase in features (u3 vs u5/u7) and quality of dac and other components (u3, u5, u7).

the xonar dg/dgx or donar dx should also be considered if you can deal with internal cards.