ASUS takes its name from Pegasus, the winged horse in Greek mythology that symbolizes wisdom and knowledge. ASUS embodies the strength, purity, and adventurous spirit of this fantastic creature, and soars to new heights with each new product it creates.
- Industry-leading 124dB SNR (signal-to-noise ratio) audio quality inherited from the revolutionary and widely-acclaimed Xonar Essence ST/STX;
- Ultra-low jitter with premium TCXO clock source;
- Clean and consistent power supply thanks to high-fidelity low-dropout (LDO) regulators and WIMA capacitors for uncompromising sound;
- Top-notch headphone amplifier supports up to 600ohm-headphone impedance with additional gain for in-ear monitors (IEMs);
- Exclusive op-amp swap kit includes three op-amps and tool for easy tone tuning Celebrated MUSES op-amps deliver true-to-life musicality.
Four years after the debut of Essence STX â€” the long-term holder of the number-one position in Head-Fi's Sound Cards segment, as voted by highly-satisfied users globally â€” ASUS remains committed to delivering ever better high-end sound cards to delight the most demanding audiophiles. Drawing on years of experience in developing Essence One, Essence STU and Essence III, Essence STX II delivers meticulous design, quintessential performance and profound musicality â€” elements that shape the spirit of the whole Essence Hi-Fi series.
Essence STX II delivers industry-leading 124dB SNR audio clarity, a much-envied quality inherited from the revolutionary and widely-acclaimed Essence STX sound card â€” and up to 64 times (64X) better than typical onboard audio hardware. Headphone output reaches a fantastic 120dB SNR.
A high-precision clock is crucial to audiophiles. Integrated circuits are susceptible to heat and temperature changes, which is why Essence STX II includes a premium temperature-compensated crystal oscillator (TCXO) clock source. It is an ultra-accurate timing technology that ensures ultra-low jitter.
Essence STX II uses a dedicated four-pin Molex power connection rather than drawing power from the expansion slot like other cards, and that means a cleaner supply of electricity. Optimized power delivery is further assured with high-fidelity low-dropout (LDO) regulators â€” unprecedented in the audio-card industry. As well, audiophile-appreciated WIMA capacitors deliver balanced sound.
The profound musicality that Essence listeners expect is encapsulated by celebrated MUSES 8920 and MUSES 8820 op-amps, which deliver true-to-life tonality and spacious sound imaging.
The built-in headphone amplifier supports up to 600ohm impedance â€” so audiophiles can plug in the finest high-impedance headphones to enjoy the pure quality delivered by Essence STX II.
ASUS engineers have furnished Essence STX II with an additional gain control designed especially for high-sensitivity IEM headphones, allowing musicians and audio purists to use earpieces that channel audio output straight to the ear canal â€” isolating ambient noise for listening that requires undisturbed concentration.
Essence STX II benefits from swappable op-amp sockets that allow users to create different timbres and tonal combinations.
Essence STX II even comes with a swap kit that includes three additional op-amps â€” two Texas Instruments LME49720s and one MUSES 8820 â€” and a clamp tool that makes it easy to remove the op-amp microchips.
Essence STX II benefits from Dolby Home Theater technologies that turn your PC into a true home-theater system â€” boosting all your entertainment audio.
Reproduces Dolby Digital 5.1-channel surround sound, immersing players in exciting and realistic entertainment experiences with high-quality surround that puts you at the center of the action.
Reshapes two-channel and 5.1-channel stereo content into virtual surround sound even with just two speakers, reproducing the dynamic, enveloping environment of a 5.1-speaker home theater system.
Transforms high-quality stereo sound into rich and realistic 5.1-channel surround that completely changes your audio perception.
Simulates spectacular surround for personal audio by using powerful digital signal processing. It delivers up to 7.1-channel surround over any headphones for more vibrant and spacious listening.