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ASUS Xonar Essence STX 

The sample rate determines the number of audio samples per second that the 

Digital-to-Analog Converters (DAC) and S/PDIF digital interface will output. The 

Xonar Essence STX card can support sample rates up to 192KHz (44.1K, 48K, 

96K, 192KHz). Usually audio CDs and MP3 files are 44.1KHz; DVD-Video uses 

48KHz; DVD-Audio or other HD media may contain 96KHz or 192KHz high-

definition audio content. Please select the corresponding sample rate for your 

playback sources to get the best audio fidelity. Even if your setting differs from the 

audio source’s sample rate, the Xonar Essence STX engine will do super high 

fidelity sample-rate-conversion with a double floating-point filter, which can reduce 

total harmonic distortion (THD+N) by -140dB.

Select the sample rate that corresponds to (or exceeds 

that of) your playback sources, for optimal audio fidelity. 

The Xonar Essence STX card supports sample rates up to 

192KHz (44.1K, 48K, 96K, 192KHz). Typical values:
-Audio CD, MP3, WMA, Wave files are 44.1KHz;
-The audio of DVD-Video is 48KHz;
-DVD-Audio or other HD media may contain 96KHz or 

192KHz high-definition audio content.