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Asus Xonar Essence STX II 7.1 PCI-E Sound Card

  • Headphone amplifier supports up to 600ohm
  • Exclusive op-amp swap kit includes three op-amps and tool for easy tone tuning...
  • Celebrated MUSES op-amps deliver true-to-life musicality

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QuickFind: 659208

Mfr part code: 90YA00NN-M0UA00

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    Asus Xonar Essence STX II 7.1 PCI-E Sound Card Product Description

    7.1-channel Hi-Fi quality sound card with 124dB SNR clarity, top-notch headphone amplifier and premium TCXO clock source

    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 Ultra-fidelity (120dB SNR) 7.1-channel output via the exclusive daughterboard

    Keeping the audiophile spirit and philosophy alive

    Four years after the debut of Essence STX - the long-term holder of the number-one position in Head-Fi's Sound Cards segment, as voted by highly-satisfied users globally - 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 - elements that shape the spirit of the whole Essence Hi-Fi series.

    Legendary audio quality that just got better

    Industry-leading 124dB SNR 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 - and up to 64 times (64X) better than typical onboard audio hardware. Headphone output reaches a fantastic 120dB SNR.

    Clean and consistent power supply

    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 - unprecedented in the audio-card industry. As well, audiophile-appreciated WIMA® capacitors deliver balanced sound.

    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.

    True 7.1-channel surround sound that's easy to fit and great to customize

    Exclusive to Essence STX II 7.1 is a multichannel daughterboard that delivers true 7.1-channel surround with high-fidelity 120dB SNR outputs.

    This easy-to-fit daughterboard slides into a slot adjacent to Essence STX II 7.1, so installation couldn't be more convenient. Each channel is fully customizable with nine swappable op-amp sockets - giving audiophiles complete freedom to create the perfect surround-sound experience for their ears and listening environment.

    Impeccable headphone amplification

    Top-notch headphone amplifier supports The built-in headphone amplifier supports up to 600ohm impedance - so audiophiles can plug in the finest high-impedance headphones to enjoy the pure quality delivered by Essence STX II.

    Exquisite headphone gain control

    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 - isolating ambient noise for listening that requires undisturbed concentration.

    Easily adjust the sound for your ears

    Three swappable op-amp sockets Essence STX II benefits from swappable op-amp sockets that allow users to create different timbres and tonal combinations.


    Technical Specifications

    Manufacturer Warranty

    Service & Support Limited warranty - 3 years
    Service & Support Details Limited warranty - 3 years

    Expansion / Connectivity

    Interfaces 1 x audio line-out - RCA x 8 ¦ 1 x headphones - phone stereo 6.3 mm ¦ 1 x audio line-out - 4 pin MPC ¦ 1 x SPDIF output - RCA


    Device Type Sound card
    Form Factor Internal
    Interface Type PCI Express
    Width 10.7 cm
    Depth 16.8 cm

    Processor / Memory

    Signal Processor ASUS AV100

    Audio Output

    Sound Output Mode 7.1 channel surround
    DAC Resolution 24-bit
    Sample Rate 44.1 kHz (min) - 192 kHz (max)
    Signal-To-Noise Ratio 124 dB
    Frequency Response 10 - 90000 Hz
    Features Headphone Amplifier, TCXO clock source
    Compliant Standards Dolby Digital Live, Dolby Virtual Speaker, Dolby Headphone, Dolby Pro Logic II


    Included Accessories Op-Amp swap kit
    Cables Included 1 x mini-phone 3.5 mm to RCA cable ¦ 1 x S/PDIF cable

    Software / System Requirements

    OS Required Microsoft Windows 7 (32/64 bits), Microsoft Windows XP (32/64 bits), Windows 8 (32/64 bits), Windows 8.1 (32/64 bits)

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