I have a Creative Sound Blaster X-Fi Titanium HD sound card in my desktop and I am planning on getting the Sony MDR-7520 headphones. The main goal is excellent sound for PC gaming. Any recommendations for an amp? The max I would like to spend is $300. I don't want a DAC because I want to use my sound card's sound processing features.
One more thing: I already have the Sony XBA-3 IEMs and find they sound great. Could I just get an amp and use these IEMs for PC gaming too (right now I use them for my iPod touch) or would I get better sound with the MDR-7520?