Crazy Genie Fiber-Optic Input 7.1 Channel PCI Sound Card HRTF 3D Audio Reverberation CMI8768 Fiber-Optic Input Plug and play, PCI interface Karaoke Support 7.1 channel surround sound output, Support Microsft D3D and Aureate 3D interface HRTF-base 3D positional audio, supporting DirectSound 3D, EAX and A3D interfaces