The Xonar DGX audio card combines Dolby® Headphone 5.1 high definition surround with the ASUS-exclusive GX 2.5 gaming audio engine and an on-board headphone amplifier. These result in accurate and deep audio that brings every nuance and sound across fully, making the new Xonar DGX 5.1 an ideal audio card for gamers who want to remain totally aware of their play environments.