About the Essence
The ASUS Xonar Essence STX (often referred to as part of the Essence series) is a premium PCIe x1 sound card designed for audiophiles, inheriting top-tier audio quality from the Essence lineup. It features industry-leading 124dB SNR for front-out, ultra-low jitter via TCXO clock, clean power with LDO regulators and WIMA capacitors, and a built-in headphone amplifier that drives headphones from 32-600 ohms with low distortion. Users can customize sound via swappable op-amps including MUSES types. Supports ASIO 2.0, Dolby Digital Live, DTS, and high-res audio up to 192kHz/24bit. The Essence STX II variant enhances this with 120dB headphone SNR and additional IEM gain. No longer manufactured, as it's a legacy product from around 2010-2014.
Specifications
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