I play a fair amount of games, and listen to music secondly, but not a whole lot. I was thinking about just getting an external dac but because I mostly play games I would prefer to keep my soundcard, unless anyone thinks otherwise?
I have a Titanium HD that I sometimes output via the rca's to either a Woo Audio wa6se, or a Burson 160. I get a lot of feedback noise no matter which of the amps I use. I hear a slight digital whirly type noise when I move my mouse. On the kexp music webpage I hear feedback when the picture on the top middle of the page transitions to another picture. http://kexp.org/Default.aspx. In Diablo I get a lot of static, in Battlefield 3 I get mostly the mouse movement noise. When I am listening to audio on kexp alone I just hear a slight feedback in the backround if I am not moving anything or playing a game. The burson produces more static then the Woo Audio, but they are both annoying. I have a pair of Audio Technica a-900's that were my first headphone pair, and still going strong :P. When they are plugged dirrectly into the Titanium HD, I do not get any noise at all. I have a Fiio amp, the e9 that just plugges into the headphone jack of the soundcard, and that does not produce noise either.
This is my second computer case, I have a good power supply, good motherboard, two gtx 480's, and a couple of case fans.
I can't move the sound card to another slot with both video cards. I suppose I can remove one video card and move the sound card around, I will try that when I get home from work.
I don't have a great pair of shielded RCA's, but they are "shielded". I think it's monster audio 400i shielded cables that I got on sale for pretty cheap.
Because of this I don't really use my amp's or decent headphones that much. Any suggestions on how to trouble shoot this would be greatly appreciated.