DailyTech has some more information about the Asus Xonar audio cards. They heard the PCI version will be called D2 and that a PCI Express version will be launched as the D2X.
The ASUS AV200 is a PCI-based sound processor. ASUS equips the Xonar D2X with a Pericom P17C9X110 PCI-to-PCIe bridge. Due to the additional PCI-to-PCIe bridge, the Xonar D2X requires external power from a four-pin power connector. Performance of the Xonar D2X and D2 are identical. Internal ASUS testing has not revealed any performance shortcomings of using a PCI-to-PCIe bridge chip, Lai said.
The ASUS Xonar D2-series features full-duplex 24-bit/192 KHz audio processing on all inputs and outputs. ASUS claims the Xonar D2-series can reach signal-to-noise ratio levels up to 118dB. The new sound cards also support Dolby Digital Live and DTS:Connect technologies for single-cable multi-channel audio enjoyment.
Additional Dolby and DTS technologies such as Dolby Headphone, Dolby Pro Logic IIx, Dolby Virtual Speaker, DTS Interactive and DTS NeoC. The ASUS Xonar D2-series also supports ASIO 2.0 for low latency audio tasks.
The sound cards are powered by the Asus AV200 sound processor. This chip was designed by C-Media and will remain exclusive to ASUS.