Absolutely agree with Aeacus. A decent external DAC will do a better job all around (and they are very cost effective) as will the better soundcards like the AE5 etc due to there built in 32 bit DACs and the like. Even though my motherboard has a good DAC, the internal AE5 Sound card I bought is a world of difference in driving my audio setup and 250 Ohm headphones.