Dolby Digital Live:
Real-time 5.1 Dolby Digital surround sound encoders

Dolby Pro-Logic IIx:
Converts stereo or 5.1 sounds to seamless 7.1 surround soundfield

Dolby Headphone:
Delivers a realistic and spacious 2-to-5.1 surround or 3D positional soundfield over any set of stereo headphones

Dolby Virtual Speaker:
Simulates a highly realistic 5.1-speaker surround sound listening environment from as few as two speakers

Supports latest DS3D GX 2.0 for gaming on Vista & XP
DS3D GX 2.0 not only revives EAX and DirectSound effects in games on Windows Vista as GX 1.0, but also incorporates Dolby Home Theater Technologies (Dolby Virtual Speaker, Dolby Headphone, Dolby Digital Live, Dolby PrologicIIX) to provide best gaming audio experience.

Innovative VocalFX makes gaming and online chat more lively and attractive
VocalFX is an innovative voice processing technology to let your voice get into the realistic game landscape (VoiceEX) or to emulate the background scenes in online chat (ChatEX). It also allows you to change your voice pitch to disguise who you are (Magic Voice). These features dramatically increase the fun for voice communication on PC.

Delivers about 35 times cleaner audio quality (116dB SNR) than most motherboard audio (85dB SNR)
The noise on Xonar D1 audio card is only 1/35 (2.8%) of the noise level from most motherboard onboard audio. In addition, Xonar D1 also produces as little as 1/32 (-105dB) of the total harmonics distortion from motherboard audio does (-75dB).

S/PDIF header for combining audio with video through a VGA card’s HDMI output
The new S/PDIF header allows connectivity with supporting VGA cards, facilitating merged output of audio and video through a VGA card’s HDMI port. This provides a clean, simple solution for Home Theater PC builders.