... to 2/2.1/4/4.1/5.1 speakers 3D Positional Audio,6 speaker out, Dual game port supportedHRTF-base ... 3D positional audio, Supports DirectSound 3D,Aureals A3D interface and Creative EAX interface PCI ... /2.1/4/4.1/5.1 speakersFully sound Blaster, Sound Blaster Pro compatible and Direct Sound compatible connectorMPU-401 Port, Dual game port ,16 ...