ASUS announced its new ASUS Xonar DX PCI Express 7.1 Audio Card earlier this year. The company claims that the new sound card delivers 35 times cleaner audio compared to onboard audio built into your mainboard.
The new Xonar DX card is tuned for audio quality with 116dB signal-to-noise ratio (SNR) and features other sound enhancing technologies like Dolby Home Theater and DS3D GX. To compare ASUS says that the typical on-board audio solution has 85dB SNR.
The Xonar DX uses the CirrusLogics CS4398 audio DAC that is typically used in Hi-Fi devices. The card is also able to take advantage of the latest DirectSound and EAX 5.0 sound effects in PC games for Windows Vista. ASUS also integrates its VocalFX technology that allows for users voices to be integrated into games via VoiceEX and to emulate background scenes in online chats (ChatEX).
Other features include support for Dolby Digital Live, Dolby Headphone, Dolby Virtual Speaker, and Dolby Pro Logix IIx. The audio processor used for the card is the ASUS AV100 High-Definition Sound Processor. The analog playback sample rate and resolution s 44.1K/48K/96K/192KHz at 16/24 bits. The analog recording sample rate and resolution is the same. A digital S/PDIF Digital Output is featured as well with Dolby Digital and DTS.
The best news for PC users that like the specifications of the Xonar DX is that the card will retail for only $89. The new Xonar DX will fit into the ASUS line alongside the previously announced Xonar sound cards including the Xonar U1 external audio processor, Xonar D2 and the Xonar D2K.
quote: EAX has nothing to do with actual 3D audio positioning. Positioning is done by Microsoft's DirectSound3D API.