Thanks for the response. Has anyone had the opportunity to compare the U7 to the Creative Sound Blaster Omni Surround 5.1?  The Omni has an 600 ohm amp which will drive the Q701 better but I havent seen any reviews for it. 

Just got this little guy but I am still undecided on my new headphones to use with it.  Debating between the Philips Fidelio X1 and AKG Q701.  I want to lean towards the Q701's but I am concerned the U7 wont be able to drive them properly (also concerned about build quality as they are now made...

I guess I dont under stand the difference between a "gaming" external sound card and an DAC/AMP.  I thought a the external sound card was a DAC/AMP and software for surround sound.  I had looked into a Sound Blaster Omni before but was unsure of its quality to drive something like a AKG Q701. ...

After reading this guide and The Nameless PC Gaming Audio guide I have come to the conclusion that I do really want to invest in a good gaming headphone and I at least have a decent clue where to start.  I have about $300 dollars to spend (350 max) and don't really want to go over.  I also don't...