happy to join the community, eventhough it has been a while since I subsribed to Teksyndicate, or to Tigerdirect for that matter :D
Now to solve my problem:
Currently I am using my focusrite 2i4 as an Interface for my speakers and midi. I am thinking about purchaisng the Blue Spark mic, which needs phantom power, which I have, which is good. Also having those mic preamps built inside the soundcard it would be a shame to go with a usb mic such as the blue yeti for example. The thing is, that I am not sure, if I can use my headphones over the onboard dac, or any other dac(usb) and at the same time use the mic over the 2i4, e.g. in teamspeak.