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Asus Xonar Essence STX II Soundcard PCIe 5.1 Sound Card

5.1, TI Bur-Brown PCM1792A DAC, up to 124dB, 1 x 6.3mm Audio Out, 2 x RCA, 1 x 6.3mm Audio In, 1 x S/PDIF, 1 x Front Panel Header

Asus Xonar Essence STX II Soundcard PCIe 5.1 Sound Card
Ordered Upon Request question tooltip

£221.26 inc vat

£184.38 ex vat

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Order Code: ASU-STXII5

Manf.Code: 90YA00MN-M0UA00

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Asus Xonar Essence STX II Soundcard PCIe 5.1 Sound Card overview

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

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.

Ultra-low jitter

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.

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.

  • Audio Interface
    PCI Express
  • Audio Performance
    Output Signal-to-Noise Ratio (A-Weighted):
    124 dB
    Output Signal-to-Noise Ratio (A-Weighted) (Headphone-out) :
    120 dB
    Input Signal-to-Noise Ratio (A-Weighted) :
    118 dB
    Output THD+N at 1kHz (Front-out) :
    >0.0003 %(-110 dB)
    Output THD+N at 1kHz (Headphone-out) :
    >0.001 %(-100 dB)
    Frequency Response (-3dB, 16bit/44.1KHz input) :
    10 Hz to 90 KHz
    Output/Input Full-Scale Voltage :
    Line output (RCA, 3.5) : 2 Vrms (5.65 Vp-p)
    Headphone output : 7 Vrms ( Vp-p)
  • Chipset
    Audio Processor :24-bit D-A Converter of Digital Sources:
    TI Burr-Brown PCM1796 (123dB SNR)
  • Digital-to-analog Converter(DAC)
    TI Bur-Brown PCM1792A
  • Sample Rate and Resolution
    Analog Playback Sample Rate and Resolution :
    44.1K/48K/96K/192KHz @ 16bit/24bit
    Analog Recording Sample Rate and Resolution :
    44.1K/48K/96K/192KHz @ 16bit/24bit
    S/PDIF Digital Output :
    44.1K/48K/96K/192KHz @ 16bit/24bit
    ASIO Driver Support :
    44.1K/48K/88.2K/96K/176.4K/192KHz @ 16bit/24bit
  • Connectivity
    Analog Output
    1 x 6.3 mm jack (1/4") Headphone out
    2 x RCA (Un-Balanced)
    Analog Input
    1 x 6.3 mm jack (1/4") (Line-in/ Mic-in combo)
    Digital
    1 x S/PDIF out (1 x Coaxial)
    1 x Front-Panel Header
  • Special Features
    Dolby® Technologies : Dolby® Digital Live/Dolby® Headphone /Dolby® Virtual Speaker /Dolby® Pro-Logic II
  • Operating System
    Windows® 8.1 , 32bit/64bit
    Windows® 8 , 32bit/64bit
    Windows® 7 , 32bit/64bit
    Windows® XP , 32bit/64bit
  • Accessories
    Op-amp swap kit x 1
    3.5mm-to-RCA cable x 1
    6.3mm-to-3.5mm adapter x 1
    S/PDIF adapter x 1
    Driver CD x 1
    Quick start guide x 1
  • Dimensions
    168 x 107 mm ( L x W )
  • Note
    Op-amp swap kit content:
    1 x Needle-nose pliers
    2 x LME49720
    1 x MUSES8820

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Delivery Options

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If you need your order at the weekend, for £9.98, you can specify the day you wish to have it delivered to you, Saturday or Sunday providing your order has been placed by 17:00 on the Friday before.

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About Asus

Asus are a top brand in the field of NVIDIA GeForce and AMD Graphics Cards, as well as Motherboards, Monitors and Networking products. Their Gaming brand ROG (Republic of Gamers) features products highly rated by gamers around the world.

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