Asus Xonar Essence STX 124 dB SNR Headphone Amp Card

Publisher's description of Asus Xonar Essence STX 124 dB SNR Headphone Amp Card

124 dB SNR / Headphone Amp card for Audiophiles!
- 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 OPAmp socket

Audio Performance
Output Signal-to-Noise Ratio (A-Weighted): 124dB for Front-out,117dB for Headphone-out (600ohms) dB
Input Signal-to-Noise Ratio (A-Weighted): 118 dB
Output THD+N at 1kHz: 0.0003% (-110dB) for Front-out, 0.001% (-100dB) for Headphone-out
Input THD+N at 1kHz: 0.0002% (-113dB) for Line-in
Frequency Response (-3dB, 24-bit/192kHz input): <10Hz to 90KHz, Output/Input Full-Scale Voltage, 2 Vrms (5.65 Vp-p)

Bus Compatibility
PCI Express: PCI Express Rev. specification compatible, 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 PCM1792A*1 for Front-Out (127dB SNR, Max. 192kHz/24bit)
24-bit A-D Converter for Analog Inputs: Cirrus-Logic CS5381* 1 (120dB SNR, Max. 192kHz/24bit)
High Fidelity Headphone Amplifier: Texas Instruments 6120A2*1 (120dB SNR, 100dB THD+N @ Vcc±12V, RL=600Ω, f=1kHz)

Sample Rate and Resolution
Analog Playback Sample Rate and Resolution: 44.1K/48K/96K/192KHz @ 16/24bit
Analog Recording Sample Rate and Resolution: 44.1K/48K/96K/192KHz @ 16/24bit
S/PDIF Digital Output: 44.1K/48K/96K/192KHz @ 16/24bit, Dolby Digital
ASIO 2.0 Driver Support: Supports 44.1K/48K/96K/192KHz @16/24bit with very low latency

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