they have the d/a converters for situations where you want the best d/a conversion. but many of the good soundcards sound just as good on the d/a side. At least my delta 1010 does.
Cyan - Thge D/A's in the very vast majority of soundcards is even worse than the A/D - unfortunately.
It just a good thing that you can get things to disk properly using a good A/D.
When I'm mixing in stereo I always stay digital all the way, go into a D/A and from there direct into my monitors, using the D/A as a monitor volume control.
Hoppin up the front end will only give me half of the picture, if I want the full panoramic view - in living technicolor - I am gonna have to hop up the ass.
I agree Cyan, completely. it nice to have a good D/A for two reasons:
1) to enable accurate monitoring.
2) to take a digital signal and convert it to analogue before doing a higher bit rate conversion, for instance, it you want to take a loop or an effect of a 16/44.1 CD.