The Xonar STX is a pure audiophile sound card with really good components. Which should be able to drive any future headphone you'd wanna purchase. The Xonar simply wouldn't.
^JEEEEEEEESSS !!!! Thats why I took it .. cos mostly I use headphones .. the speakers are for once in a blue moon family watching movie together ... the fact that it just supports it by emulating is enough
Well in that case ur bypassing the Dac of the soundcard completely. Hence the SQ of the sound card is pointless and you would need an Avr to connect it to.