I just assembled a new pc using Asus p8p67 pro mobo with 8 gig memory and 2400k processor. I've tried all options on the Realtek High Definition Audio codec that came with the mobo, but sound quality is worse than that of the 2.1 channel sound from my former onboard chipset on a cheaper motherboard which I used before. Has anyone experienced a similar poor quality sound, or are my settings wrong? can someone please help me?