Experience immersive audio with this 5.1 multi-channel PCI-e sound card. Utilizes the CMI8738 audio processing chip for superior sound quality. Supports 6-channel surround sound output and is compatible with DirectSound 3D and EAX sound effects. Features 24-bit SPDIF OUT and optional SPDIF IN for enhanced audio fidelity. Ideal for home theaters, large-scale 3D gaming, music enjoyment, karaoke, and more. Supports full-duplex 5.1 channel audio. Utilizes the VIA VT1723 Envy24D multi-channel audio processing chip. Compliant with PCI-e x1 specification revision 1.1 and AC'97 standard revision 2.3. Supports 24-bit, 48 KHz audio sampling frequency for both playback and recording. Includes front L/R, surround L/R, center/subwoofer, and S/PDIF-Out connections. Optional daughterboard supports rear surround L/R, line-in L/R, mono Mic-In, and S/PDIF-In. Features noise cancellation functionality, even when the computer is off or on. Supports MSWin10/Windows 7/Vista/XP/Server 2003-2008 32/64-bit, 2000, ME, 98SE operating systems.