Just wondering if, based on the above "chain", there would be any need to buy a "better" sound card like the STX or Titanium HD?
I *think* the answer is "no", since the U3 is the "DAC" and provides Dolby Digital Live for surround sound gaming through the headphones, and the O2 drives the headphones (assuming the U3 isn't sufficient to drive the 600 Ohm Beyerdynamic DT 990)?
Also, I'd be plugging a clip-on mic into the U3 for Teamspeak.
Just want to make sure I'm not missing anything here.
Thanks for all the help!
p.s., not sure if anyone here can help with this, but I'd like to drive a pair of buttkickers (through a separate power amp). I'm guessing I can either split the signal from the U3 to the O2, or possibly use the onboard sound card to send a signal to the buttkickers' power amp?