Choosing only the best components and finest design, XonarEssence STX achieves unprecedented 124 dB SNR –64 times clear than on-board solutions, bringing top-o-the shelf audio experience for audiophiles. XonarEssence STX’s built-in headphone amplifier is ready to drive any headphone to it’s full performance stage, with under 0.001% distortion.
Features
Type: 124dB SNR Headphone Amp Card
Output Signal-to-Noise Ratio: 124dB for Front-out, 110dB for Headphone-out dB
Audio Processor: ASUS AV100 High-Definition Sound Processor (Max. 192KHz/24bit)
Operation System: Windows Vista/XP(32/64bit)/MCE2005
Asus Xonar Essence STX 124dB SNR Headphone Amp Sound Card Specifications
Part # XONAR ESSENCE STX
Audio Performance
Output Signal-to-Noise Ratio:
124dB for Front-out
110dB for Headphone-out
Input Signal-to-Noise Ratio:
118dB
Output Total Harmonic Distortion + Noise at 1kHz (-3dB):
0.0003% (-110dB) for Front-out
0.001% (-100dB) for Headphone-out
Input Total Harmonic Distortion + Noise at 1kHz (-3dB):
0.0002% (-113dB) for Line-in
Frequency Response (-3dB, 24-bit/96kHz format):
<10Hz to 90KHz
Output/Input Full-Scale Voltage:
2 Vrms (5.65 Vp-p)
Headphone Impedance:
Optimized for 32~600
Bus Compatibility
PCI Express:
PCI Express Rev. specification compatible
Max. full 2.5Gbps bandwidth per direction and optimized latency for high-definition audio processing
Compatible with X1, X4, X8, X16 PCI Express slots
Main Chipset
Audio Processor:
ASUS AV100 High-Definition Sound Processor (Max. 192KHz/24bit)
24-bit D-A Converter of Digital Sources:
Texas Instruments PCM1 for Front-Out (127dB SNR, Max. 192kHz/24bit)
RCA jack 2 (Front R / Front L)
6.30mm jack*1 (Headphone out)
Analog Input Jack:
6.30mm jack 1 (Shared by Line-In/Mic-In)
Digital S/PDIF Output:
High-bandwidth Coaxial/TOS-Link combo port supports 192KHz/24bit
Other line-level analog input (for TV Tuner or CD-ROM):
Aux-In (4-pin header on the card)
Front Panel:
Shared by Headphone out / 2 channels out / Microphone in
Driver Features
Operation System:
Windows Vista(32/64bit) / XP(32/64bit) / MCE2005
Dolby technologies:
Dolby Digital Live/Dolby Headphone/Dolby Virtual Speaker/Dolby Pro-Logic II
ASIO 2.0 Driver Support:
Supports 44.1K/48K/96K/192KHz @16/24bit with very low latency
Asus Xonar Essence STX 124dB SNR Headphone Amp Sound Card Features
EMI-free Analog Output Path
EMI shielding seals all analog output signals perfectly from noise, offering distortion-free audio enjoyment.
Independent Power for Analog Signals Draw additional power from MOLEX ensures the power-sensitive analog signals treated with the cleanest power source.
Industry-leading 124dB SNR
Built-in headphone amp drives every available headphone with <0.001% distortion
Nichicon “Fine Gold” capacitors offer great dynamic performance
Perfectly shielded EMI-free analog output path
Customize your sound color effortlessly via swappable OPAmpsocket
Asus Xonar Essence STX 124dB SNR Headphone Amp Sound Card Video
1.800.814.5410 
858.764.8900 Mon-Fri 6AM-4PM PT
