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Item#: 9SIA0AJ3UB7489

ASUS Xonar Essence STX Virtual 7.1 Channels 24-bit 192KHz PCI Express x1 Interface 124 dB SNR / Headphone AMP Card

  • PCI Express x1 7.1 Channels
  • 124dB SNR Rating
  • Built in Headphone Amp
  • 3.5mm and 6.3mm Headphone Compatibility

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews


The ASUS Xonar Essence STX is a PCI-e audio card that is designed for the music enthusiast. Equipping the Xonar Essence STX with the best components and the finest design, the STX delivers a top-of-the-line audio experience with a 124 dB SNR rating. With a built-in headphone amp that can power headphones up to 600 ohms and 6.3 mm headphone jacks, the STX makes a perfect pair with high-end headphones.

  • newegg High Signal-to-Noise Ratio (SNR) A high SNR rating means less unwanted noise. Therefore the audio is cleaner which translates to better sound quality. The Xonar STX is the world’s first sound card to achieve a 124 dB SNR rating for crystal clear audio.
  • newegg Built-in Headphone Amp A high-quality TI TPA6120A2 headphone amp supports headphones up to 600 ohms of impedance with lower than 0.001% distortion. This allows users to drive their headphones as intended without additional amplification.
  • newegg EMI Shield EMI shielding seals the RCA/headphone signals from noise and offers distortion-free audio.
  • newegg Nichicon “Fine Gold” Professional Audio Capacitors Using state-of-the-art etching technology, Nichicon “Fine Gold” capacitors deliver rich bass and crystal clear high frequencies.
  • newegg 6.3 mm Headphone and Mic Jacks The 6.3 mm headphone jacks offers compatibility with high-end headphones. An adapter is included for the usage of headphones with 3.5 mm connectors.
  • newegg Upgradeable Op-amp The Xonar Essence STX can be upgraded with the Xonar Op-amp Upgrade Kit for a blend of natural sound and enhanced quality.

Learn more about the ASUS Xonar Essence STX

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details

Customer Reviews of the ASUS Xonar Essence STX

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  • Anonymous
  • 2/11/2016 11:45:41 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsGreat card but has a few problems

Pros: When it's working properly, it produces incredible sound and in a variety of different ways provided by the software.

Cons: Ever since I installed this card there have been a few times where my system could hiccup or even lose sound until I restart my game. I've also read that ASUS has not provided drivers for windows 10 yet, however there is non official driver out there that doesn't perform as good as the windows 7 drivers.

Other Thoughts: I would recommend this card to people who are looking to improve their sound. Just understand that it has a few minor problems.

Did you find this review helpful? Yes No

  • Anonymous
  • 12/29/2015 9:34:03 PM

3 out of 5 eggsDelivers a mediocre placebo effect

Pros: Delivers a mediocre placebo effect

Cons: Drive UI is terrible, functionality is fine, but I prefer the ZxR

0 out of 2 people found this review helpful. Did you? Yes No

  • Gail S.
  • 10/11/2015 4:42:50 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsThe best sound card I've ever owned

Pros: Amazing, clear sound. Audio definition like nothing I have ever heard before. Easy to use interface. Updated drivers for Windows 10. The card was released over six years ago, but it is still an amazing high end audio card.

Cons: Expensive, but you get what you pay for.

Other Thoughts: I'd suggest you google the UNi Xonar Drivers and use them.

1 out of 1 people found this review helpful. Did you? Yes No

  • TIM C.
  • 9/5/2015 1:17:58 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggssounds great

Pros: i got it on sale and am pretty happy with it.

On krk rokits, corsair sp2500 and bland creative t40s, the stx makes quite a difference in sound quality. highs, mids and lows become very distinct. It offers a plethora of settings to enhance your music and movie experience.

For games, i feel the creative z line up has better software implementation. Im not saying the stx is bad in the gaming department--its still much better than onboard audio--but the stx seems geared towards outputing music & video audio for headphone and stereo users; whereas the z lineup is better for fps.

Cons: asus software interface looks outdated. Not a huge deal, since it's mostly a set it and forget it affair, but it just looks windows 98 ish.

The extra clarity works both ways; lossy and unprofessionally mixed audio files will become much more apparent. 128kbps files sound awful compared to higher source material

oh yeah, the cardboard box looked like someone stomped on it a few times. Inside the Asus box was also dented and ripped, but components were not damaged. Not Newegg's fault.

Other Thoughts: Im not 100% satisfied with the shipping, thus the 4 egg overall experience. The product itself functions exceptionally.

It is a 5 star audio card. I definitely recommend it for an htpc build, for watching movies and listening to music.

1 out of 1 people found this review helpful. Did you? Yes No

  • Mike B.
  • 8/13/2015 11:22:45 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsBuy it.

Pros: The sound quality moved me to tears. I have neurological hypersensitivity to sound and for the first time I'm unable to detect the slightest amount of distortion or noise in the audio. I knew it would be an upgrade but I wasn't expecting such an extreme boost in quality as I tend to notice artifacts that are typically beyond human perception. This card is worth every penny of the purchase price.

Cons: Enduring life without one.

Other Thoughts: Remember to plug in the power connector when you install the card.

2 out of 3 people found this review helpful. Did you? Yes No

  • Anthony B.
  • 8/10/2015 10:22:03 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggs

Pros: Functions wonderfully, really high quality audio.

Cons: Drivers are garbage at best. Had to do a fresh reinstall to get it to even function.

1 out of 1 people found this review helpful. Did you? Yes No

  • Alex B.
  • 8/8/2015 1:39:24 PM
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsASUS Support Is Horrible

Pros: Great when it worked

Cons: ASUS support is horrible
No driver support for Windows 10

Other Thoughts: ASUS has lost all my respect after this. Don't trust a company that can't keep their products up to date. I contacted them 3 times and their solution was to have me ditch Windows 10 and go back to Windows 8.1 or 7.

Instead of just updating their software, they told me to reinstall a different operating system.

Manufacturer Response:

Dear Alex,

Thank you for taking the time communicating with us. We are very sorry to hear that our ASUS products did not meet your expectations. We want to extend our sincerest apology for any inconvenience this has caused you. We have every desire to address your needs and provide the best solution available to resolve your issue as soon as possible. I do understand that you're having an issue with the drivers, please use this link to download the updated drivers for Windows 10.
http://support.asus.com/Download.aspx?SLanguage=en&m=Xonar+Essence+STX&p=21&s=3

For further technical assistance or if you want to discuss this matter with me, please email me at customerloyalty@asus.com and put case # N151037517 in the subject line for your reference.

I'm here to help you and all others with these issues, as our customer loyalty department dedicated to bringing a resolution to all issues related to our products.

Thank you for choosing ASUS.

Best regards,
Donabell
ASUS Customer Loyalty

0 out of 2 people found this review helpful. Did you? Yes No

  • Alex B.
  • 7/30/2015 8:48:56 AM
  • Ownership: more than 1 year
  • Verified Owner

3 out of 5 eggsWAS a great card

Pros: Great for gaming and music.
Virtual surround

Cons: No Windows 10 Drivers

Other Thoughts: This card was awesome until Windows 10 came along. None of the drivers work with Windows 10.

Manufacturer Response:

Dear Alex,

I want to thank you for posting this review and I understand that you have an issue with the sound card. On behalf of ASUS we apologize for any inconvenience this issue has caused you but let me go ahead and further assist you. Can we have a detailed information that you are experiencing with the sound card was there an error message?

For further technical assistance or if you want to discuss this matter with me, please email me at customerloyalty@asus.com and put case #N150787979 in the subject line for a reference. I'm here to help you and all others with these issues, as our customer loyalty department dedicated to bringing a resolution to all issues related to our products.

Thank you for choosing ASUS.

Best regards,
Jerry
ASUS Customer Loyalty

0 out of 2 people found this review helpful. Did you? Yes No

  • Nicholas P.
  • 5/29/2015 11:10:34 PM
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsI own TWO of these cards....

Pros: The sound quality is incredible, best you can get in a PC really... easy opamp access, and I've never had one die or give me a single problem.

Cons: Here is where it gets dicey. The software is TERRIBLE. Asus has neglected this card, and not released drivers for 8.1 (that isn't beta) or even 10 yet. This card is so widely used why wouldn't you support your product and keep it alive. When I do upgrade my HTPC and Gaming PC cards.. this is going to really have me considering other cards

Also, this card will rarely crash your PC when coming out of sleep mode so beware.

Did you find this review helpful? Yes No

  • Steven S.
  • 4/19/2015 5:39:51 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggsDont Believe the Hype

Pros: -Eye candy inside case
-Built in amp

Cons: The drivers were a pain to use. Each output does not show up in the Sound section of the control panel as I expected but rather its one output and you have to use their proprietary software that looks like its a decade old. There were some issues with my mic in some games where people were just unable to hear me but with onboard audio everything worked fine. My other issue is that the drivers seemed to alter the sound too much. I get that they were trying to make the sound specifically for games better but it is poorly implemented.

-Needs separate molex power connector
-Drivers are down right awful

Other Thoughts: I am a big believer in ASUS products but the fact that they thought this product was ready to be put on sale baffles me. If you want audiophile sound, do yourself a favor and get an external DAC/Headphone Amp combo instead. I am much happier with that set up

Newegg was awesome and refunded all my money and even paid for return shipping. I will continue to come here first for my various computer part needs.

Manufacturer Response:

Dear Valued Customer,

We sincerely apologize for the inconvenience that you experienced with the unit.

Please be advised that there are specific drivers and tools that the customer can use for the unit depending on the unit's operating system, please visit our website, http://www.asus.com/ph/Sound_Cards_and_DigitaltoAnalog_Converters/Xonar_DG/HelpDesk_Download/ for more information.

If there is anything else we can assist you, please contact me directly at customerloyalty@asus.com and place the case #N150486407 in the subject line for reference.

Thank you for choosing ASUS products.

Best regards,
Jerry
ASUS Customer Loyalty

1 out of 1 people found this review helpful. Did you? Yes No

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Item#: 9SIA0AJ3UB7489
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