The Asus Xonar DG 5.1-Channel PCI Sound Card is a powerful sound card that has intelligent functioning & set-up to bring you fantastic audio when you are gaming, watching movies or listening to your favourite music.  3D audio  This sound card features Xonar's GX2.5 audio engine, which immerses you in the game like never before. You can hear your enemies creep up behind you, or pick up the drum beats of your favourite song as if it was live in your room.  This audio engine provides high quality 3D sound, so you'll be able to stay aware of everything around you in your games  perfect when someone's sneaking up on you.  Dolby audio technology  The Asus Xonar DG 5.1 Sound Card is great for both starters or seasoned audio veterans, with its 96 K Hz/24-bit playback.  The Dolby Digital surround audio helps you get the most out of your speaker set-up, by upgrading any input to 5.1 DTS Surround Sound.  Headphone amp  A notable feature of this sound card is the built-in headphone amp that optimises the sound for headphone listening. It has three modes including VOIP for chats or music, a pro-gaming mode that adds extra dynamics & the Exciter mode that gives you a powerful bass & a full sound field. It also features the auto-detect front panel header which automatically switches output from the back panel to the front when headphones are plugged in.  Easy to set up & use, the Xonar DG 5.1-Channel PCI Sound Card from Asus will intensify your multimedia applications & add a new dimension to your computer's sound capabilities.