The headset I'm using is the Turtle Beach DPX21 and I'm trying to get this thing to work in 7.1 with games specifically like World of Warcraft but it doesn't. There's an option that I enabled in the sound options that says Dolby Digital so I know it works cause when I did the test the Dolby light on my amp turned on but then it would just go back to the 2.1 light. I tried putting in a movie that has Dolby Digital and while the 5.1 light came on the 2.1 also remained on at the same time so it sounded horrible. The motherboard I'm using is the Asrock Z77 Extreme 4 with the Realtek Audio Codec ALC898. Is this compatible with Dolby Digital or something? Cause I know it works when I did the test, just can't seem to get it to work in games or movies. Any help would be greatly appreciated.