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Asus Xonar Essence STX II 7.1 PCI-E Sound Card

CCL Code: SND0067
Manufacturer Code: 90YA00NN-M0UA00
Manufacturer: ASUS


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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. 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. 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.

Main Features

  • 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


Microphone In Port 1 x Mic In/Line In
Headphone Ports 1 x Headphone
S/PDIF Port 1 x S/PDIF Out
Interface PCI-E


Form Factor Internal Sound Card
Pack Quantity 1
In The Box Asus Xonar Essence STX II 7.1 PCI-E Sound Card • Op-amp swap kit x 1 • 3.5mm-to-RCA cable x 1 • S/PDIF adaptor x 1
Width 16.8 cm
Height 10.7 cm

Key Features

Main Colour Black
Number of Channels 7.1
Interface Type NVMe PCIe
Price (Bundles) 184.3
Connector Type 3.5mm Jack
Interface Type PCI Express

Item Details

Manufacturer ASUS
Manufacturer Code 90YA00NN-M0UA00
EAN 4716659682646
Condition New

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