5.1 -channel sound card.
Chipset: CMI8738-6CH.;
System interface: 32-bit PCI express x1 Bus Master.; Built-in external built.; Customize Internet audio with the power and surround sound of EAX audio technology.; HRTF-base 3D positional audio, supporting DirectSound 3D, EAX and A3D interfaces Supports EAX, karaoke key, and Echo sound effects.