Turn your NB into a personal Hi-Fi center with Xonar U3 Headphone amplifier: Extra bass punches and sound details Dolby Home Theater: Complete Hi-Fi enjoyment GX2.5: for the most immersive in-game experiences Hi-Fi class audio: Powered by exclusive Hyper Grounding technology Shop Modal header Pocket-sized Incredible Sound Turn your NB into a personal Hi-Fi center with Xonar U3Get a BIG UPGRADE from USB audio with Xonar U3’s crisp and clear sound for music, movie, gaming and VOIP enjoyment! Headphone AmplifierSuperb headphones listening experiencesHigh-performance headphone amplifier with adjustable gain levels driving your headphones/ headsets to it’s full-performance stage. Dolby Home TheaterThe best surround sound experiences The Xonar U3 is a pocket-sized, portable USB audio card with complete support for a wide variety of Dolby Technologies for your Hi-Fi enjoyments. GX2.5For realistic 3D audio effectsEnjoy up to 128 different sound effects played simultaneously for a realistic 3D experience! Hi-Fi class audioClean, clear and pureXonar exclusive hyper-grounding technology, which works like a watershed to separate audio signals from noise to provide clean and clear sound. Hardware Interface Removable CoverAttached to the main body which eliminates the possibility of losing the cover. A handy split ringAttaches to your key-ring or lanyard for maximum portability. Blue LED LightA blue light indicator illuminates when the Xonar U3 is active! Convenient USB extension cableBecause of space, convenience or décor, sometimes you need a longer USB 2.0 cable. S/PDIF TOSLINK optical adapterReady for you to enjoy digital output right out of the box!