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UNi Xonar Drivers 1.81 (post periodically updated)

UNi Xonar drivers are modded Windows drivers for the following cards:

  • Asus Xonar DG, DGX, DG SI, DS, DSX, D1, D2, DX, D2X, HDAV, HDAV Slim, ST, STX, STX II, Xense.

  • Other C-Media CMI8788 audio chip based cards: Auzentech X-Meridian & X-Meridian 2G; HT Omega Claro, Claro Plus, Claro II, Claro Halo, eClaro; Razer Barracuda AC-1. View full list.

Please note that these are modded drivers and there are limitations regarding how much the actual original drivers can be fixed this way.

Linked content:

  1. Introduction

  2. UNi Xonar Features

  3. FAQ & troubleshooting guide (upd 26 Sep 2017)

  4. Having problems installing UNi Xonar drivers? Refer to this topic

  5. Useful tips & suggestions | Known issues & workarounds (upd 22 Mar 2016)

  6. UNi Xonar installer addon documentation

  7. Poll: Rate ASUS Xonar driver support


  1. Release notes

  2. Windows 10 compatibility


Page updates and announcements:

Previous post updates

DONATIONS – Donation list here

Let me first say that these drivers are free of charge for everyone. Those of you who appreciate my hard work and take pleasure in contributing, you can make a small donation (minimum $2 because of fees). Bear in mind you don’t donate for ASUS and C-Media intellectual property and work, you do it for the work that I have done.

CONTRIBUTIONS – Contributors list here

Surely donating is not the only way you can support this project. You can submit your custom made icon, application or any other little enhancements that can make UNi Xonar better. Let’s not forget about spreading the word about UNi Xonar drivers and helping other Xonar owners.


Release notes 1.81a

Driver for all supported cards. Includes 1825 audio drivers for Windows 10. Unlike previous releases, the 1825 audio driver will only work in Windows 10.

Driver changes:

  • Windows 10: Updated audio driver to 1825 (built date: 22 ‎June ‎2016, made by C-Media).
  • Updated C-Media Panel.

Other notes:

  • Replaced C-Media driver uninstaller with UNi Xonar driver cleaner.

Rev. 2 changes:

  • Added support for STXII cards in Asus Audio Center, cards will be detected as STX by Asus Audio Center but feature wise almost everything should be there.

Known issues:

  • 1825 audio drivers have an issue when the audio card is uninstalled, disabled or the drivers are overwritten, resulting in a system crash. In order to avoid the uninstall system crash I’ve come up with a workaround  that’s presented below
  • Asus Audio Center: GX button is no longer showing. It has to do with 1825 audio drivers and there may be a reason why C-Media removed it. I’m not sure if it’s worth it to bring the GX on/off control back.
  • STX II:  Asus Audio Center is missing the gain 16/32 ohms for headset.

Possible issues:

  • STX II: XonarSwitch might not work. Need more feedback on this.
  • Audio playback through headphones and SPDIF at the same time isn’t possible anymore. Original report. Need more confirmations.
  • DSX & probably other cards: DTS Connect with 5.1 speakers does not work. Original report. Need more confirmations.
  • There are reports that the sound quality of these audio drivers is different. RightMarkAudio tests that I’ve made didn’t show any significant differences between v1.81a and v1.80a.
  • The 1825 audio driver may have higher DPC latency than previous drivers. Original report. The tests that I’ve made didn’t show any difference in DPC Latency between v1.81a, v1.80a and v1.80b drivers. Maybe it has to do with the settings that are being used.  My test where done with 2.0 analog output.

How to uninstall 1825 v1.81 drivers: In order to avoid a system crash while uninstalling 1825 drivers you will need to play an audio file before proceeding with the uninstall process. Restart system after the uninstall process is done.


Release notes 1.80

UNi Xonar installer changes:

  • Added DPI interface scaling to the installer.
  • Added card autodetection and if the audio card is not detected it will show an error message with possible reasons for that.
  • Improved driver cleaning. It uninstalls all copies of the Xonar/C-media CMI8788 drivers that are present in the Windows driver repository. By installing drivers with “Run driver cleaning” option you won’t be able to use “Roll Back Driver” option for the audio card in Device Manager.
  • Changed the driver installation procedure. Added a fail safe driver installer that should help in those cases where you were required to manually install the audio driver or install it in safe mode. Silent installation is always on and its user option has been removed. If standard driver installation gets stuck (does not finish after 100 sec) it is automatically closed. If standard driver installer fails to install the drivers then an alternate driver installer is launched. If that fails too, you will get notified by the installer that driver installation failed.

Driver changes:

  • Windows XP: Added support for other CMI8788 cards.
  • Xonar DG, DGX, DG SI: Front Panel jack detection should now work if it did with the original drivers.
  • Fixed GX not being turned off by default in “Normal” configuration for the following cards Xonar D2, D2X, DG, DGX and DG SI.

Rev. 2 changes:

  • Improved and fixed some problems with the new driver installation procedure.
  • Added different messages based on why installation failed.
  • Fixed “Front Panel Microphone” not working by default.

Rev. 3 changes:

  • Increased the delay between driver cleaning and driver installation procedures. Might help in some installation failing cases.
  • Fixed the “Warning: Windows running in Test Mode or with Disable Driver Signature Enforcement is required!” message not showing up if needed in combination with the detected audio card.

The 1.80 drivers come in two variants:

  • 1.80a “Standard”

Driver for all supported cards. Replacement for 1.75a driver. Includes 1816 audio drivers for Win XP and 1823 audio drivers for Windows Vista/7/8/8.1/10.

Driver changes:

  • Windows Vista/7/8/8.1/10: Updated audio driver to 1823 (built date: 2 Jun 2015, made by C-Media).
  • Includes updated driver installer, ASUS Audio Center and C-Media Panel.

Other notes:

  • 1823 audio drivers are the first drivers released for Windows 10 by ASUS/C-Media. Whether they perform any better than 1822 or STXII 11.5 drivers remains to be seen.
  • Xonar STX II cards: Drivers work with STXII cards but the changing audio settings may not work with ASUS Audio Center and only with C-Media Panel. Installation on Windows Vista/7/8.1/10 x64 requires Windows running in Test Mode or with “Disable Driver Signature Enforcement” option.

Known issues:

  • STXII: Asus Audio Center does not work. You need to download this patched version and copy paste it over “C:\Program Files\UNi Xonar Audio\Customapp\”.

Possible issues:

  • Microphone stops working if running specific programs. If you run into this issue please report it in a reply to the original report. If you run into the issue you can switch to v1.75a drivers or connect the microphone to the onboard audio card microphone input.
  • WASAPI playback issues might occur with some soundcards
  • Occasionally when waking PC up from sleep the Xonar card does not output any sound.
  • Drivers might stop installing on Windows 10. Try 1.75a, 1.80b or 1.81a instead.
  • Windows 10 Creators Update: Windows would not boot after these drivers where installed. If you run into this problem you have to boot Windows in Safe Mode and remove the audio drivers. Original report. I could not reproduce the issue.
  • 1.80b “STXII”

Driver maily for STX II and  STX II 7.1 cards. It does work for the other UNi Xonar supported cards too. Replacement for 1.75b driver. Includes STX II version 11.5 audio drivers (built date: 18 Feb 2014, made by C-Media).

Driver changes:

  • Includes updated ASIO (, driver installer, ASUS Audio Center and C-Media Panel.
  • Windows XP: Drivers now work for all UNi Xonar supported cards. These were not working with 1.75b drivers.

Other notes:

Rev. 2 changes:

  • Fixed “Asus Audio Center” not working properly and getting replaced by C-Media Panel when installing with “Normal – Asus Audio Center” configuration.

Rev. 3 changes:

  • Fixed some installation issues when drivers were installed on STXII cards (like missing driver uninstall entry in Programs and Features,  incorrect C-media panel name).
  • Fixed a bug where optimal card configuration was not being applied if the drivers were installed without the “Re-enable stereo upmix” option.

Possible issues:

  • Microphone stops working occasionally or when changing audio playback settings (DS->WASAPI). If you run into this issue please report it in a reply to this comment. If you frequently run into the issue you could try v1.75a drivers if possible or connect the microphone to the onboard audio card microphone input.


Release notes 1.75

UNi Xonar Installer changes:

  • Various changes and improvements done to the UNi Xonar installer.
  • Added warning message if installing the drivers would require Test Mode.
  • XonarSwitch is now automatically closed before installing the audio drivers.
  • Improved “Apply addons” function. Included .inf files from the drivers can now be dynamically altered. Documentation can be read here. Applying new 1.75 compatible versions of addons (like DHT4) will display the proper audio driver version now and users could now choose which addons they want to install once these are added to the Uni Xonar installer location.

Rev. 3 changes:

  • Fixed GX is not being turned off by default in Normal configuration for the following cards Xonar D2, D2X, DG, DGX, DG SI.

The 1.75 drivers come in two variants:

  • 1.75a “Standard”

Driver for previously supported cards. Same audio drivers as those in 1.72 (1816 for Win XP, 1822 for Windows Vista/7/8/8.1/10).

Rev.2 changes:

  • Fixed ASUS and C-Media Panels not working in Win XP.
  • Includes updated driver installer and C-Media Panel.

Known issues:

  • The installer is showing “Warning: Test mode to be enabled!” message by mistake if Xonar Xense selected as card.

Possible issues:

  • Missing Dolby Pro-Logic IIx options from C-media Panel. If you have this issue, you can use the “C-media Panel v1.62” installer addon or install v1.72 drivers.
  • 1.75b “STXII”

Driver mainly for STX II and  STX II 7.1 cards. It also works with UNi Xonar previously supported cards.

Rev.2 changes:

  • Fixed issue where installer did not apply the correct audio settings (e.g. to fix surround echo). Anyone who installed the previous 1.75b drivers should install the 1.75b rev.2.

Driver changes:

  • Includes updated ASIO ( , ASUS Audio Center and C-Media Panel.
  • Includes STX II version 11.5  audio drivers (created on 18 Feb 2014).

Other notes:

  • These drivers will work with the previously supported Xonar cards on Win Vista/7/8.1/10 but may require that you enable Windows Test Mode on 64 bit OS.
  • These drivers do not work for the other Xonar cards on Windows XP.

Known issues:

  • ASIO in 64 bit mode does not work. The cause of this issue is the 64 bit asio  dll file from the original STXII drivers.

Previous release notes:

Release notes 1.72

These drivers bring Windows 8.1 support.

Driver changes:

  • Updated audio driver to version 1822 for Windows Vista/7/8/8.1. Still using 1816 for Windows XP.
  • Includes updated driver installer, ASUS Audio Center and C-Media Panel.

Other notes:

  • New icon for UNi Xonar installer. Thanks to propheticus for his contribution.
  • ASUS Audio Center and C-Media Panel tray icons now have higher resolution icons. Useful for >100% DPI settings.

Known issues:

  • GX is not being turned off by default in Normal configuration for the following cards Xonar D2, D2X, DG, DGX, DG SI.
Release notes 1.71

Driver changes:

  • Updated audio driver to 1821 for Windows Vista/7/8  and 1816 for Windows XP.
  • Includes updated driver installer

UNi Xonar Installer changes:

  • Fixed some issues with Driver cleaning module
  • Improved and fixed some potential issues with UNi Xonar Installer

Known issues :

  • C-media Panel: Enabling and disabling “7.1 Virtual shifter” option disables stereo upmix. Use “Stereo upmix switch” to re-enable it or you can use the C-media Panel v1.62 addon (it will revert to an slightly older C-Media Panel version)
  • In some cases,  WASAPI exclusive playback is interrupted by playback from other audio applications. More details here.  Fix: If you don’t use S/PDIF, disable Digital Output from Control panel->Sound. It’s confirmed that the audio drivers included in 1.70 don’t have this issue.
  • Win Vista/7/8, there are reports that you cannot play sound through S/PDIF and headphones at the same time.
  • GX is not being turned off by default in Normal configuration for the following cards Xonar D2, D2X, DG, DGX, DG SI.


Release notes 1.70

Driver changes:

  • For Windows Vista/7/8 it includes 1818 audio drivers. For Win XP it includes 1814 audio drivers.
  • Includes updated versions of Updated C-media and Asus panels.
  • Fixed HTOmega Claro 2 driver support.
  • Fixed driver signature issues for the other non-Xonar cards that were present in previous release.

Rev. 3 changes:

  • All the improvements and changes done to the UNi Xonar installer from 1.7x versions have been incorporated into this release (like support for addons).
  • Updated C-Media Panel with the one included in 1.72 release.

UNi Xonar Installer changes:

  • Added option to apply addons at driver installation.
  • Improved Low DPC Latency option. Now it allows access to C-media Panel as well. And Asus Audio Center won’t autostart after driver installation like it previously did.
  • Improved Driver Cleaning process. Now it will clean the Panel and HsMgr(GX) processes startup entries too.
  • Reduced the overall installer size (from 13MB to 7MB)
  • Replaced Windows XP driver installer with the same one that’s being used in Windows 7. Please report if there are any malfunctions compared to previous UNi Xonar driver releases.
  • Removed “1777 drivers + Asio 1.0”. This option lives on as an addon.
  • Rev 2: Applied all UNi installer fixes from 1.71

Known issues :

  • C-media Panel: Enabling and disabling “7.1 Virtual shifter” option disables stereo upmix. Use “Stereo upmix switch” to re-enable it or you can use the C-media Panel v1.62 addon (it will revert to an slightly older C-Media Panel version)
  • GX is not being turned off by default in Normal configuration for the following cards Xonar D2, D2X, DG, DGX, DG SI.

Other notes:

  • New icon for UNi Xonar installer. Thanks to propheticus for concept and contribution.
  • ASUS Audio Center and C-Media Panel tray icons now have higher resolution icons. Useful for >100% DPI settings.

Complete Previous Release Notes

Notes about Windows 10 compatibility (updated 20 Dec 2017)

UNi Xonar drivers above v1.64 will work in Windows 10 but since the audio drivers are not yet made specifically for Windows 10 there could be some issues that you could run into depending on audio settings used. Different drivers could work differently so if you encounter any issues try installing the other UNi Xonar versions.

Apart from driver issues there could be issues solely from Windows 10 sound system that would be fixed with future Windows updates. There is also a small chance that some things could break with future Windows updates.

Windows 10 Fall Creators Update (build 1709) reported issues so far are (updated 20 Dec 2017):

  • Drivers above 1821 v1.71 may cause BSOD when waking system from sleep (#1, #2, #3). It’s unclear if it is a driver issue or a Windows issue that’s triggered in specific conditions that are met when using drivers above 1821 v1.71. Since ASUS/C-media driver support is pretty much dead and most people didn’t have this issue until Windows 10 Fall Creators Update, people having this issue should contact Microsoft support and submit their crash dumps. (20 Dec 2017)
  • Card settings are being restored after each restart. A temporarily workaround would be to save your settings as a XonarSwitch profile and apply it each reboot. Anyone affected should report the issue to Microsoft.
  • Default format(bit-depth and sample rate) from Windows Volume->Playback devices and the number of audio channels resets each time the Windows Volume icon is clicked (#1, #2). Anyone affected should report the issue to Microsoft.
  • Possible high frequency tone when playing audio.

Windows 10 Creators Update (build 1703) reported issues so far are (updated 10 May 2017):

Your feedback is welcome.  For those of you who run into severe problems after the Creators Update build upgrade you could roll back to the previous Windows 10 build (#1, #2). If that is no longer possible you can download an older Windows 10 build from here and install it without a internet connection present.

To prevent Windows 10 upgrade to Creators Update you need to either disable “Windows Update” service from Control Panel->Administrative Tools->Services or disable the Creators Update update with Wushowhide tool (guide on how to use it).

Update 30 Aug 2016: Thank you for the feedback so far. Based on the feedback received there shouldn’t be any problems installing the drivers on Windows 10 Anniversary Update (build 1607) whether it’s an upgrade or a new installation. One user reported that audio card was recognized only when installing the drivers when booting with Disable Driver Signature Enforcement option. Apart from drivers installation aspect, this new Windows build brings new problems for some users like the following reported ones: crackling or loud popping sound in the speakers, audio card not being detected sometimes or disappearing in Windows and 5.1 analog not working. For those of you who started having problems only after the Anniversary build upgrade you could roll back to a previous Windows 10 build (#1, #2). If that is not possible you can download a older Windows 10 build from here and install it without a internet connection present. To prevent upgrading to build 1607 you need to disable “Windows Update” service from Control Panel->Administrative Tools->Services.

Update 3 Aug 2016: Microsoft made changes to driver signature policy with the Windows 10 Anniversary Update (1607) that could make the Xonar drivers not working/installing anymore. There are some exceptions from this driver signature enforcement. At the moment it’s unclear to me if installing the drivers in Test Mode or with Disable Driver Signature Enforcement still works. I’m interested in hearing you experience under this discussion thread.

Update 28 Nov 2015: The Windows 10 Threshold 2 update does not seem to fix many of the sound issues that where present so far and it may introduce new ones. In my opinion Windows 10 is a very buggy OS, the only things working fine are the spying of its users(#1, #2) and the periodic removal of user preferences and programs(#1, #2, #3, #4).

Update 19 Oct 2015: The audio fixes from Insider Previews >= 10547 will probably be included in the upcoming “Threshold 2” update that will be released around November 2015.

Update 1 Oct 2015: The Windows 10 development team is fixing some audio issues with Windows 10. The fixes where made available for testing starting with Windows 10 Insider Preview build 10547.


100% compatible drivers when?

Because of the very slow development of the audio drivers by C-Media and the long time it takes for C-Media partners (ASUS and HTOmega) to release the new drivers it may take a while before we have a 100% compatible driver for Windows 10.  If we are lucky we will have new audio drivers in 2-3 months after Windows 10 RTM launch. As soon as new audio drivers became available I will release a new UNi Xonar drivers package.

  • Update 25 Jan 2017: 1825 audio drivers for Windows 10 are available. These are the first audio drivers that only work on Windows 10. Hopefully they will perform better than those that supported also Windows 7 and Windows 8.1.
  • Update 01 Oct 2015: 1823 audio drivers are the first drivers released for Windows 10 by ASUS/C-Media. Whether they perform any better than 1822 or STXII 11.5 drivers remains to be seen.

About Chrome stutter issues on sites like YouTube. (27 Aug 2015)

  • Update 27 Aug 2015: The stutter issues on youtube are  fixed with the latest Chrome build released on 20 Aug 2015 (v 44.0.2403.157). Reports indicate that stutter issues are still happening for videos on other websites (eg. daily motion, facebook, instagram).
  • Update 7 Aug 2015: After some testing and some reading it seems that the stuttering issues are not related to the UNi Xonar drivers. I’ve got the same behavior with Realtek’s onboard audio and from what it looked liked. My guess the issue is caused either by Windows 10 or Chrome.

There is a Chromium issue opened here.

Here are some things you could try:

  • Change Chrome audio buffer size.
  • Change/keep sample rate to 44.1 kHz both in the audio panel and Windows Volume->Playback devices->(…) Audio Device Proprieties -> Advanced -> Default Format.
  • Change sample rates back and forward a couple of times.


Driver Downloads (Windows only):

OSDriver package name & download linkAudio driver ver. & build dateASIORequires Test Mode or Disabling Driver Signature Verification on x64 OS for:Notes
Win10UNi Xonar W10 1825 v1.81a r21825 / 22-Jun-20162.0.0.12STXII, HDAV, Xense, Razer AC-1Latest Win10. Might have more problems than previous releases.
UNi Xonar 1816/1823 v1.80a r31823 / 0‎2-‎Jun-20152.0.0.12STXII, HDAV, Xense, Razer AC-1Latest Win8.1, Win7, Win Vista. Might be more stable than v1.81a for Win10.
UNi Xonar STXII 11.5 v1.80b r3STXII 11.5 / 18-Feb-20142.0.0.14All cards except STXIILatest STXII signed driver. Fork from standard audio drivers (eg. 1822). Might have more fixes than standard drivers.
UNi Xonar 1816/1822 v1.75a r31822 / 11-Dec-‎20132.0.0.12STXII, HDAV, Xense, Razer AC-1Overall it might be more stable than v1.80a and v1.81a drivers.
UNi Xonar STXII 11.5 v1.75b r3STXII 11.5 / 18-Feb-20142.0.0.13All cards except STXIIFork from standard audio drivers (eg. 1822). Might have more fixes than standard drivers.
UNi Xonar 1816/1821 v1.711821 / 11-Apr-‎20132.0.0.12HDAV, Xense, Razer AC-1Win 10: might solve the BSOD’s after system wakeup from sleep. More info here.
UNi Xonar 1814/1818 v1.701818 / 17-‎Dec-‎20122.0.0.12HDAV, Xense, Razer AC-1
UNi Xonar 1814/1815 v1.64 r31815 / 03-‎Oct-‎20122.0.0.12STXII, HDAV, Xense, Razer AC-1Might offer better positioning in multichannel setups like 5.1 or 7.1 (info)
WinXPUNi Xonar STXII 11.5 v1.80b r3STXII 11.5 / 18-Feb-20142.0.0.14 –Latest Win XP. Fork from standard audio drivers (eg. 1822). Might have more fixes than standard drivers.
UNi Xonar 1816/1823 v1.80a r31816 / 11-‎Apr-‎20132.0.0.12 –Latest Win XP standard audio drivers.
UNi Xonar 1814/1815 v1.64 r31814 / 03-‎Oct-‎20122.0.0.12 –Might offer better positioning in multichannel setups like 5.1 or 7.1 (info)

Official addons (documentation):

  1. 1777 drivers + Asio 1.0. Info.
  2. C-media Panel v1.62 (fixes stereo upmix turning off for v1.64 rev.1 drivers)

3rd party addons page here.

Standalone applications for changing settings or enhancing audio: 

1. Standalone apps pack / Mirror. Based on a script made by Virus. Before running the files, close any audio source/application. Legacy, preferably use XonarSwitch and configure it with separate profiles.  Does not work correctly when used with STXII (“b”) drivers. Contains:

  1. Front panel switch v3.2
  2. SampleRate switch v1.2
  3. Microphone Array Enabler v1.1 – Might be useful if you have an microphone array
  4. HDAV HDMI enabler v1.0 – This application hasn’t been tested please submit feedback if it works or not. It appears it is not needed anymore.
  5. Acoustic Echo Cancellation enabler v1.0 – Useful for other Cmedia 8788 based cards that lack this setting
  6. Stereo upmix switch v1.0
  7. 7.1 virtual speaker shifter enhanced profile v1.0 – Profile created by Cu. This profile should enhance the effect of positioning in games when using Dolby Headphones and 7.1 virtual speaker shifter. Please provide feedback about this profile. Demo.
  8. Headphones ohm Amp switch v1.0  – Works only with the cards that support this.

2. Additional tweaks

  1. Disable SpeakerCompensation tweak
  2. Increase microphone volume by 3 dB tweak

3. Xonar related applications:

  1. XonarSwitch (beta) – Alternative panel to Asus Audio Center and C-Media Panel. Allows you to control various Xonar’s audio settings, define them as switchable profiles and apply them on-the-fly without having to stop the audio playback. By Giulio.
  2. Front Panel switch (new version) / Mirror. Release notes. By Virus.
  3. Xonar-EQ – Control Xonar equalizer settings from your Android phone or tablet. By Sascha.
  4. UNi Xonar driver cleaner v1.01 – Standalone driver cleaner based on the one that’s included in UNi Xonar drivers.
  5. Xonar Restoree Extended – Tool to restore Xonar cards hardware ID. The extended version includes support for Xonar STX II and Xonar DG SI cards.
  6. Xonar Driver Restart – Application that will restart the Windows Audio Service and C-media audio driver.

4. Auxiliary audio applications:

  1. ASIOConfig by djdecks – ASIO configuration viewer/changer that can be used when you can’t access the Xonar ASIO Configuration directly.
  2. SoundLock – Set the maximum output volume that sounds can be at. Can replace Xonar SVN in some cases (like limiting the volume of loud noises in movies). Works on Windows Vista and newer.
  3. SoundVolumeView – Alternative to Windows Volume Mixer. Allows a finer tune of applications volume levels and offers the ability to save them as different profiles. Works on Windows Vista and newer.
  4. Equalizer APO – A parametric/graphic system-wide equalizer. Works on Windows Vista and newer.
  5. ASIO4ALL – Universal ASIO driver. Can be used instead of the ASIO driver included that’s included in Xonar drivers.
  6. MicMute – Mute microphone with a keyboard shortcut or make it work with a push-to-talk key for any application.



  1. Onur26 Dec 2017 @ 17:17

    Every time I try to launch the Asio, I will get an error message saying AsusAudioCenter has stopped working, however the audio will still work, with very high dpc latency of 650-740 but an occasional jump to 6000, this never used to happen as one day my sound card was not being detected by windows. I reseat the sound card and it started working again with these issues, I have also placed my sound card on every available slot with the same result. The drivers I was using prior was the 1.80a r3, for me they were rock solid with no issues to mention.The issues occurred randomly. The original xonar drivers will allow me to use the Asio function without any crashes, but it will have an increase in latency of around 740- 760 with occasional jumps to 6000 (Version I have noticed that when I disable my WiFi card my dpc latency will drop around 200 on both drivers. I have tried every single driver you have with the same result, and I did uninstall the drivers properly. I have run the ChkDisk function with no error messages. The latency is especially noticeable when watching videos and playing games.My motherboard sound was always disabled.

    Windows error message (1.64 r3, all drivers apart from original xonar have same error message):
    Problem Event Name: APPCRASH
    Application Name: AsusAudioCenter.exe
    Application Version:
    Application Timestamp: 5067972e
    Fault Module Name: ntdll.dll
    Fault Module Version: 6.1.7601.23915
    Fault Module Timestamp: 59b94a16
    Exception Code: c0000005
    Exception Offset: 000222e2
    OS Version: 6.1.7601.
    Locale ID: 2057
    Additional Information 1: 0a9e
    Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
    Additional Information 3: 0a9e
    Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

    Windows 7 SP1 64bit
    Xonar DSX


    • CarvedInside26 Dec 2017 @ 22:39

      Xonar drivers may not be responsible for the high DPC latency issues you are experiencing. Quick way to find this out would be to uninstall the drivers and see how high the DPC is then. For a in-depth DPC analysis, check DPC latency with LatencyMon and see which driver is causing the high DPC latency. And take a look at the article I wrote if you haven’t already.

      For the appcrash, some of your Windows files might be corrupted. This may be fixable by running the following commands in CMD one by one:

      • sfc /scannow
      • dism /online /cleanup-image /scanhealth

      It may announce you that need to run the sfc command multiple times.
      If this does not fix things, I don’t know what else you could do to fix things. If that’s the case, you may try and save the “C:\Program Files\UNi Xonar Audio\Customapp” folder with AsusAudioCenter.exe from v1.64 and use it with newer drivers.


      • Onur27 Dec 2017 @ 16:39

        Unfortunately I wasn’t able to restore the Asio setting back even with your suggestions, however I did find the culprit for the extremely high dpc latency thanks to your suggestion of using LatencyMon, it was the Nvidia Drivers (388.71). After I uninstalled it my dpc dropped to around 40 with spikes to 100. Anyway thank you for your work for bringing out these custom drivers.


        • CarvedInside27 Dec 2017 @ 23:47

          For the DPC Latency problems with the Nvidia drivers, besides trying different driver versions you should try disabling Nvidia High Definition Audio devices in Device Manager.


  2. Phil Wardt27 Dec 2017 @ 12:43

    Asus Xonar D2X – Windows 10 Enterprise build 1709:
    – Asus geniune latest drivers (1823): Sleep is fine, Skype desktop causes a memory error on system restart (discussed in many forums)
    – UNi Xonar W10 1825 v1.81a r2: same as Asus geniune 1823 drivers
    – UNi Xonar 1816/1821 v1.71: Skype issue is fixed, no problems with sleep mode, everything looks good, at least for the little I use

    Many thanks for providing all this support


    • CarvedInside28 Dec 2017 @ 00:04

      Thank you for sharing. Prior to build 1709, did you have this problem with Skype?
      A possible fix for Skype BSOD would be to go to Skype settings and disable the log off sound.


      • Phil Wardt28 Dec 2017 @ 00:44

        It was a first install of win 10. Was on win 7 previously without issues.

        Disabling sound card in device manager and setting skype to other devices + uninstall audio drivers doesn’t fix the memory error nag (not a BSOD) of skype on Windows restart. Doesn’t happen when manually closing skype

        For now, i have no more speakers and using onboard audio to monitor. Once I get new descent speakers, I’ll check again the drivers. Will just image my disk before doing so…


  3. Martin28 Dec 2017 @ 18:25

    Hi, with the new drivers the GX button is removed. So is there any point in having HsMgr application load on startup? And if so, should just HsMgr64 be loaded rather than having both HsMgr and HmMgr64 load? Thanks


    • CarvedInside30 Dec 2017 @ 00:25

      Hi. Beside GX functionality, HsMgr was intended to hook in specific applications for other functions. The only one I know is hooking into an older version of RMAA in order to reduce input latency. Will have to look more into it before disabling them in the “Normal” configuration for 1825 drivers.
      About HsMgr and HsMgr64 both running. I was thinking that there are 2 versions running, one for hooking into x86 exes and one for x64 exes, but I don’t know if there are x64 exes for games with EAX support. Will have to do research and testing to know if they are both useful or which one to disable on x64 OS.
      Thanks for bringing this up.


  4. Richard Amoroso03 Jan 2018 @ 19:12

    I have an old Asus Essence STX original sound card, 10 yrs old. I upgraded to Win 10 and found that the installation disk does not fully load. The audio drivers are installed but, the Asus audio center does not load. Without that software, I’m unable to adjust any settings to record at. Please help. I’m also afraid that If I upgrade to the newer card STX II, I still will have the same problem in getting the audio center to load. It did load in win 8 after several attempts.



    • CarvedInside03 Jan 2018 @ 21:30

      Hi. Which drivers and version have you installed? Does the installation finish? Is Asus Audio Center installed but does not load or it isn’t?
      Buying the STX II won’t solve your problem.


      • Richard Amoroso04 Jan 2018 @ 01:39

        Hi, The drivers I installed were from the installation disk in the vista folder ( there were only two options, Win XP and vista). The card is 10 years old and is version 1.0
        The installation does not finish. the audio drivers are installed but not the audio center software. BTW, it did completely install on another desktop using Windows 8. There is a current software/drivers available on line. I tried installing it but, it won’t because it doesn’t recognize the newer version, STX II.
        This card is almost useless to me. I love the card but, I’m stuck with it having hit a brick wall. I did call them and they said the card was very old and they do not support it any more.


        • CarvedInside04 Jan 2018 @ 01:50

          Your comment above was written as a new comment instead of a reply to the discussion. I moved it but for future comments please use the reply button properly. When replying to an existing discussion use reply button floating on the right of the comment you are replying to.

          Seems strange to me that you’ve come here for help but you did not install the UNi Xonar drivers that this page is all about. This is not ok. I suggest that you try to install UNi Xonar 1816/1821 v1.71 drivers that are linked in in the post above.


          • Richard Amoroso04 Jan 2018 @ 04:38

            I am sorry for using comments once again, I had java script issues and was prevented form using the reply button. But, I just want to thank you for being probably the only person alive who was able to solve this issue. I did click on the suggested link and Voila! it works! I now have access to Asus audio center. You saved me lots of money, time and aggravation. People like yourself are a rare commodity! I will gladly contribute $$$ to your site.

            Thanks again,


            • CarvedInside04 Jan 2018 @ 18:36

              It’s understandable if there are JavaScript issues.
              Your welcome and I’m glad to hear my drivers helped. Greatly appreciate your donation.


  5. notadoc04 Jan 2018 @ 14:14

    Hi. I’m thinking about buying this card because of the headphone amp. I’m already using Windows 10 Creators. I’m a little bit confused, the official drivers that I can find on the website of Asus don’t work on Win 1709? If they do work, what is the reason to use your modded drivers with some of the bugs that I saw? Less bloatware? Would you advise me against buying this sound card because of the driver situation and to look for another solution? Thank you for your work anyway 🙂


    • CarvedInside04 Jan 2018 @ 19:00

      Hi. Which card are you interested in buying? The Xonar cards are no longer supported by ASUS and audio chip maker C-media, not that they ever gave a damn before. This means if stupid M$ breaks things further with Windows 10, at some point the drivers will not work at all and there won’t be anyone to fix them and I can only do so much. Official and unofficial drivers will work with Windows 10 1709 but there are issues, some of them are listed in the Windows 10 section in the page above. So far UNi Xonar v1.71 drivers seem to be the most stable. The reasons for using UNi Xonar drivers are listed in Uni Xonar introduction and UNi Xonar features, in short additional fixes and optimal configuration.
      What is your budget? Clearly a unsupported card isn’t worth buying at least not if it’s new, maybe just as used.


      • notadoc04 Jan 2018 @ 19:50

        My bad, my question was about the Xonar DG. I was looking for something with a max budget of around 50€, and I found a Xonar DG used with 20€. I think I will give it a try and see how it is. Thank you for your reply.


        • CarvedInside04 Jan 2018 @ 20:58

          You should look for a Xonar DGX instead, because this being on PCIe is more futureproof since newer motherboard are less likely to have a PCI slot. Your welcome.


  6. Robert Williams06 Jan 2018 @ 10:52

    Hey! Just wanted to drop a big thank you for your drivers.

    I had a very old Asus Essence STX I laying around; Unfortunately the onboard audio was causing electrical noise with cpu activity, so I pulled the card from my old computer, stuck it in and installed your UNi Xonar 1816/1823 v1.80a r3 drivers on Win 10 64 bit creator’s edition. RCA connected into a A20 Headphone amp driving DT1990’s.

    Perfect. All applications work properly, all audio is audible with zero hiss or interference of any sort. Glad to have your contribution with the drivers making it all work perfectly!


  7. BigWilley07 Jan 2018 @ 23:16

    Xonar DG, had 1.81 and 1.80 (tried reinstalling 3-4 times)
    What worked was rolling aback to 1.75a-r3.
    Steps that worked for me.
    Uninstalling current drivers, Reboot, Installing UNi-Xonar-1822-v1.75a-r3.exe , Reboot. Set Speakers to 5.1, turn on SPDIF out.

    I am weird in that I use the SPDIF out to a Yamaha Receiver for Left and Right but I used the Sub OUT from my DG to my Klipsch Promedia Sub. I am only using the .1 of the promedia.


    • CarvedInside08 Jan 2018 @ 00:35

      What was the problem with 1.81 or 1.80? You could use analog Subwoffer output along side with S/PDIF?


      • BigWilley08 Jan 2018 @ 01:08

        In 1.81 and 1.80, I could “setup” the speakers and test that the correct signal was directed correctly ( SPDIF and SUB). This was under Windows speaker setup. I could enable it in the Asus Xonar DG Audio Center, but nothing would get the correct redirection (as far as the SUB). I tried the C-Media as well. It didn’t have 5.1 but I could enable 8 speaker setup and then I would see the SUB and center channel in the little diagram. Still no sound from SUB, in normal playing. Rolled back to 1.75a w/ Audio Center. Currently working nicely. However, I haven’t restarted since I got it working. We will see if I get the reset bug.


  8. apos9108 Jan 2018 @ 18:37

    I have a Xonar D1 i had issues with Theese drivers using Fall creator’s update . i just installed the latest official :/ i think their support is pretty much dead even on Asus’s own website the Xonar D1 support don’t exist anymore . Thinking of buying an Audigy RX or sth is it worth it ?


    • CarvedInside10 Jan 2018 @ 05:15

      Which UNi Xonar driver versions have you tried? What issues do you have?
      Audigy RX is a inferior card in terms of sound quality and being a older card it might not get too much attention from Creative.


      • apos9110 Jan 2018 @ 18:42

        Dunno it sounded strange like upmixing problems i used tha latest 1.81 i think and i got the bsod from waking up. Anyway i am using the official BTW but their support is pretty much dead …


    • Tony14 Jan 2018 @ 01:27

      Yea, D1, DS is out of support now.


  9. Vin11 Jan 2018 @ 02:54

    I just wanted to add to the issue that others are also having on Windows 10 Fall Creators Update when clicking the sound icon and clicking playback devices the device is changing to 16-bit from 24-bit and changing from 8 channels to 2 channels inside of the Xonar DX Audio Center after first Windows boot up. Also, this sometimes seems to cause loss of sound in the right headphone until rebooting the computer.


    • Vic12 Jan 2018 @ 00:20

      I have the same issue. e.g. while watching some move or music it’s ok but as soon as i pause it – the right channel stops working. It happens once-twice a day. It’s annoying… Windows 10


    • CarvedInside12 Jan 2018 @ 15:20

      From what I understand you are saying that the “loss of sound in the right headphone” issue is related to the settings reset after clicking on volume issue. Why do you say it’s related? Is it happening when you click the Windows Volume?
      Instead of a system restart, you should try with the Xonar Driver Restart tool.

      Which UNi Xonar drivers have you tried?


      • Vin16 Jan 2018 @ 10:13

        I am on 1823-v1.80a-r3 – Windows 10 64bit Fall Creators Update.

        I haven’t been able to replicate the problem but it seems to coincidentally happen around the same time which is after I start up my computer and routinely click the Windows sound icon just to get the bitrate and channel changing on its own over with (It only happens once until the computer is restarted).

        When sound is loss in the right headphone, I just reboot Windows and do the same thing and it seems to be fine.

        I have not tried that Xonar Driver Restart tool but next time it happens I will try it.


  10. Adrian16 Jan 2018 @ 02:04

    Hey Mate, i have a Problem with my DSX. It´s way to quite ! I tried so much but cant get it to work. Im using the Beyerdynamic DT 770 Pro 80 OHM Headset. Any suggestions ? 🙂
    Would be very thankful



    • Kahbrohn17 Jan 2018 @ 12:18

      I just now had this issue – LOL! Have you tried to adjust your HP Advanced Settings?

      Audio Center > Analog Out (set to Headphone) -> A button will appear that looks like a hammer, press. You will get a drop down menu with ohm settings. Make sure it is set to the ohm range your headphone should be in (64-300ohm range in your case if I am correct). Caution if you select a higher range since volume will jump up quite a bit.

      Hope this helps.


  11. maciejak16 Jan 2018 @ 16:01

    I have STX II and Uni 1.81 on win10 1709. I choose line in , but no signal on signal meter. What is a problem ??


  12. Nick20 Jan 2018 @ 19:19

    Are there any vocalFX for Xonar Xense Audio Center?


  13. Sam21 Jan 2018 @ 04:33

    This is my first time being on this site and after reading the comments, I didn’t realize Asus sound cards are really problematic. I have the latest Windows 10 Pro 64bit with ASUS Xonar DGX. I bought the DGX in October 2016 and installed the official drivers. I had 0 problems with the driver until I updated to Fall Creators. It’s not a everyday problem, but computer would randomly freeze and stay frozen until I restarted the computer. If I’m playing my music, the song will sound like a scratched CD while the computer is frozen. I took out the soundcard and uninstalled the driver, the problem stopped. I searched online and learned how cruddy ASUS is with these soundcards and a lot of answers link to this site. So here I am.

    Before I decide to discard this soundcard, I would like to try your drivers. Is my frozen problems due to the out-of-date ASUS drivers? And which versions is recommended to use for my computer? I’m a bit new to this. Thank you.


  14. ale21 Jan 2018 @ 06:28

    My mic boost setting is not saved after reboot since windows 10 came out using official drivers. Same problem with UNI drivers, any fix?



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