Specifications: *. HRTF-based CRL 3D extension positional audio, API compatible with Microsoft’s DirectSound 3D and Aural A3D API *. Supports rear side speakers, CX3D positional audio in 4CH speakers Mode *. Legacy audio SB Pro compatible *. DLS-based Wavetable music synthesizer, support Direct Music *. Drivers support EAX (Environment Audio Extension) KARAOKE Key, Echo, Surround..... Win31, Win95, Win98, NT4.0, Win2000, LINUX *. MPU-401 port *. Dual Game port *. 16-bit full duplex CODEC *. 6-CH 32-bit DAC *. 32-bit PCI bus master *. PCI2.2 Compliant *. PC98/PC99 specification compliant *. Single chip design