Hi, I am using Realtek HD Audio ALC889 and I have the newest driver from my motherboards homepage. I have recently hooked up my 5.1 surround sound headset and everything plays well, but it has no bass. I've looked around and I see most of the time it is just as simple as using the swap center and subwoofer, but I do not have any of 3 options most people have at the bottom of the realtek hd audio manager. I'm not sure if its my version or if it is my driver itself.