... with the power and surround sound lf EAX audio technology * Enjoy compelling 3D audio and 4-channel sound on multiple speakers series * Rich software ... bundled * HRTF=base 3D positional audio, supporting Direct Sound 3D,EAX and ... to 2/2.1/4/4.1 speakers * Supports EAX, karaode key, Echo,etc.sound effects * High-performance dual-game port ...