Add 51 channel audio to a desktop pc through a pci slot the pcisound5ch2 pci surround sound card lets you add 51 channel audio to a desktop pc through a pci slot giving you audio output and microphoneline input via 35mm mini jacks a cost effective multimedia solution for delivering high quality surround sound this pci sound card lets you enjoy full duplex 48khz16bit audio playbackrecording and offers support for hrtf 3d positional audio microsoft directsound directsound 3d and