Xbox 360 Wireless Receiver For Windows Driver Windows 10. 124 dB SNR / Headphone Amp card for Audiophiles Story behind the Masterpiece Thousands of years ago, our ancestors crystallized their knowledge of the materials and music into the Chime of Tiger, one of the first audio masterpiece in human history. Gold-plated on the EMI shield, the Chime of Tiger totem not only represents Xonar team’s new footnote in audio innovation, but also mankind's endless pursuit of the Essence of Sound. Industry-leading 124dB SNR (Signal-to-Noise Ratio) Choosing only the best components and finest design, Xonar Essence STX achieves unprecedented 124 dB SNR – 64 times clear than on-board solutions, bringing top-o-the shelf audio experience for audiophiles. Built-in headphone amp A high-quality TI TPA6120A2 headphone driver supports headphones up to 600ohms of impendence with lower than 0.001% distortion. Drive your headphones as intended without additional amplification. Hyper-Grounding circuitry design This exclusive ASUS technique utilizes multi-layer PCB design to separate signal and noise, ensuring only the cleanest signals are passed to sensitive components.