Originally Posted by
Iamanerd
Depends on what you're looking to spend, I mean you could go with a Asus Xonar DGX for pretty cheap or a Asus Xonar DX for a bit more ($80) or get a good card like the Asus Xonar Essence STX which I personally have and I find it to be a great investment as the sound quality for my headphones and my Presonus E5's are really good granted I have studio speakers, but it's up to you and what you want to spend. Personally in your case I'd go with the DX as it's mid tier and will compliment your SP2500's well.