UNi Xonar Drivers 1.81 (post periodically updated)

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

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

  • Other C-Media CMI8786, CMI8787 and 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; AIM Audio SC8000. View full list.

Supported OS: Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows Server 2003, Windows Server 2008, Windows Server 2012  Windows Server 2016 and Windows Server 2019.

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 08.02.2019)

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

  5. Xonar best audio settings guide

  6. Audio known issues and workarounds

    (upd 22 Mar 2016)

  7. UNi Xonar installer addon documentation

  8. ASUS Xonar sound cards issues

  9. Xonar cards and AMD Ryzen motherboards compatibility

  10. 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 $3 because of fees). Bear in mind you don't donate for ASUS/C-Media work, you do it for the work that I have done and the support I'm providing.

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.
  • Windows 10: Before updating to new version, you should uninstall the v1.81a drivers, as the update process might result in BSOD (#1).

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.
  • When waking system from sleep, volume from one of the speakers could be x2 louder. Original report.

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:

  • STX II: 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 mainly 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.

Previous release notes:

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 "STX II"

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.
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 1.71.1

Replacement for v1.71 driver package with configuration fixes and updated components.

UNi Xonar Installer changes:

  • Updated UNi Xonar Installer with that from v1.80a.

Driver changes:

  • Updated driver installer, ASUS Audio Center and C-Media Panel with those from v1.80a.
  • Added theoretical support for STX II cards.
  • Fixed GX not being turned off by default in "Normal" configuration for Xonar D2, D2X, DG, DGX and DG SI cards.

Known issues:

  • 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  "S/PDIF Pass-through Device (Asus Xonar...)" from Control panel->Sound. It's confirmed that the audio drivers included in v1.70 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.
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)
  • GX is not being turned off by default in Normal configuration for the following cards Xonar D2, D2X, DG, DGX, DG SI.
  • 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  "S/PDIF Pass-through Device (Asus Xonar...)" from Control panel->Sound. It's confirmed that the audio drivers included in v1.70 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.


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 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 29 May 2020)

UNi Xonar drivers v1.64 and above will work with 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. You will have the same issues with corresponding versions of ASUS drivers.

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. Here are some solutions on how to prevent a forceful Windows 10 standard or version update.

Some of these issues also apply to other audio cards (Realtek, Creative, EVGA Nu Audio, ASUS Strix etc.) and external DACs.

> Find out which Windows version you have installed.

Windows 10 (multiple versions) notes

Possible issues and fixes:

  • Microphone not working - Check this guide. (thanks Shane)
  • Audio crashes - If you have “Dolby Atmos for Headphone” app installed you should remove it and replace it with the updated “Dolby Access” app in order to avoid audiosvr process stack overflow errors that are crashing the audio subsystem. (thanks Chris Leipold)
  • Popping and cracking sounds - If you have a AMD graphics card, try disabling AMD High Definition Audio Device from Device Manager->"Sound, video and game controllers". It's possible to try the same steps for Nvidia HD Audio Device if you have a Nvidia card. (thanks Marc)
  • BSOD's after system wakeup from sleep - Try UNi Xonar v1.71.1 driver. (thanks Kalle)
  • For systems with 1.81a drivers, the upgrading process to new Windows 10 version might result in BSOD (#1) causing the installation to fail. To avoid this problem, uninstall the v1.81a driver before upgrading.
  • The number of audio channels resets itself back to 2 or can't change to more than 2 channels(stereo) - This might be caused by having enabled one of the Spatial Sound options (Windows Sonic for Headphones, Dolby Access, Dolby Atmos for Headphones, DTS Sound Unbound). Check that Spatial Sound is Off by right-clicking on Windows Volume tray icon.
  • Sound playback echos. Issues within Windows 10 might cause the enabling of different sound settings, one of them causes sound playback echos that are more or less evident. To ensure you always get the best audio quality it might worth checking this from time to time. See Fix sound echos in Windows.
  • No system sounds. See these solutions.
  • Audio stutter in games. Open Windows Sound (right-click on Windows Volume tray icon-> Sounds or if missing type in Windows search: "change system sounds"), select Playback tab, double click your default playback device (for example Speakers ASUS Xonar Audio Device), go to Advanced tab and in the Default Format option select another sample rate setting and back to your original setting. The described windows and settings look similar to those this picture. (thanks Jean Paul).
Windows 10 version 20H2 (October 2020 Update) notes

Known issues:


Possible issues:

  • No sound coming through speakers or headphones. There seems to be an issue where the default playback device is changed upon Windows restart to HDMI or other playback devices (#1). After each restart you can restore the default playback device to your preferred audio card by opening Windows Sound-->Playback tab-> select "Speakers (ASUS Xonar...)" and press "Set default". A more permanent fix could be to disable all other playback devices in Windows Sound.
Windows 10 version 2004 (May 2020 Update) notes

Known issues:


Possible issues:

  • System crashing when installing the Xonar drivers (#1). A possible solution might be to install the drivers with Windows booted in Safe mode.
  • Equalizer and other sound effects from the cards control panel do not get applied to the sound when using S/PDIF output (#1).
  • Occasional BSOD when waking the system from sleep (#1, #2, #3). The BSOD shows DRIVER_IRQL_NOT_LESS_OR_EQUAL (cmudaxp.sys) as the cause. A possible solution could be to install v 1.71.1 drivers, please provide feedback if this worked for you.
  • PC not booting after the Xonar driver install, issue possibly manifesting in conjunction with the use of Hibernate (Suspend to disk) (#1).
Windows 10 version 1909 (November 2019 Update) notes

Known issues:

  • Higher DPC latency which may cause massive stuttering (#1). The v1909 can be uninstalled from Control Panel->Programs and Features->View Installed Updates-> select and uninstall "Feature Update to Windows 10 Version 1909 via Enablement Package (KB4517245)". To prevent v1909 update (KB4517245) to be installed again you should use Wushowhide tool (guide on how to use it) or disable Windows Update altogether for the time being.

Possible issues:


Windows 10 version 1903 (April 2019 Update) notes

Possible issues:

Other notes:

  • Windows Sound is no longer accessible from Windows Volume-> Sounds. If you want to control the playback devices, recording devices, Windows sounds you can open Windows Sound by typing in search: change system sounds or by going to Control Panel->Sound.
Windows 10 version 1809 (October 2018 Update) notes

Before upgrading to 1809, you should uninstall the UNi Xonar drivers especially if you have v1.81a installed, as the update process might result in BSOD (#1). As a reminder, in order to avoid a system crash while uninstalling 1825 (v1.81a) drivers you will need to play an audio file before proceeding with the uninstall process. Restart the system after the uninstall process is done.

Possible issues reported so far:

  • Crashes at boot or after walking PC from sleep or hibernation (#1)
  • Audio stops working after some time (#1)
  • Inability to change the number of audio channels to other than 2 channels when using S/PDIF output if you have Speakers disabled in Windows Sound -> Playback (#1).
  • For 1825 (v1.81a) drivers, during the installation of some Windows updates the system might get a BSOD (#1).
Windows 10 version 1803 (April 2018 Update) notes (updated 13 May 2018)

Our community member Chris Leipold reports that the wake up from sleep BSOD, settings reset and not working audio server process at startup issues that where introduced with Fall Creators Update are fixed with Red Stone 4 preview (pre 1803 release).

Possible issues and fixes:

  • Microphone not working - Check this guide. (thanks Shane)
  • Audio crashes - If you have “Dolby Atmos for Headphone” app installed you should remove it and replace it with the updated “Dolby Access” app in order to avoid audiosvr process stack overflow errors that are crashing the audio subsystem. (thanks Chris Leipold)

Possible issues reported so far:

  • Settings (Bit-depth, sample rate, number of channels) reset bug when clicking the volume after restart might still happen (#1)
  • Windows might freeze when installing Xonar drivers (#1)
  • Microphone might not work even after doing the microsoft privacy toggle fix (#1)
  • S/DPIF output might not work at least for some with Xonar DG cards (#1)
Windows 10 version 1709 (Fall Creators Update) notes (updated 13 May 2018)

Reported issues so far:

  • 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.
  • 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. Update 6 Feb 2018: it looks like this is fixed in insider builds >= 17074, and it will be fixed in Windows 10 version 1803. Update 8 Mar 2018: this should be fixed with KB4074588 update for version 1709.
  • 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. Update 8 Mar 2018: this should be fixed with KB4074588 update. Update 13 May 2018: This issue might still happen even after installing KB4074588 (#1).
  • Possible high frequency tone when playing audio.

Previous Windows 10 notes


Driver Downloads (Windows only) - click here if downloads are not showing

Standalone applications for changing settings or enhancing audio: 

1. Standalone apps pack. 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.
  2. Front Panel switch (new version) - Application that seamlessly changes between rear speakers and front panel speakers output.
  3. UNi Xonar driver cleaner - Standalone driver cleaner based on the one that's included in UNi Xonar drivers.
  4. Xonar Restoree Extended - Tool to restore Xonar cards hardware ID. The extended version includes support for Xonar STX II and Xonar DG SI cards.
  5. Xonar Driver Restart - Application that will restart the Windows Audio Service and C-media audio driver. Useful for sound loops, no audio output and other issues.
  6. Xonar Relay Restart - Application that will force the the Xonar relay switch to reinitialize. May be useful when there is no audio output after system boot or wake up from sleep. May be used instead of Xonar Driver Restart as it is quicker and does not affect running applications. This will cause a temporary 1 sec switch between rear and front panel outputs.
  7. Xonar-EQ - Control Xonar equalizer settings from your Android phone or tablet. By Sascha.

4. Auxiliary audio applications:

  • ASIOConfig - ASIO configuration viewer/changer that can be used when you can't access the Xonar ASIO Configuration directly. By djdecks.
  • 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.
  • more...


  1. TonyStark15 Nov 2020 @ 15:43

    It is very cool that you give friendly advice for free to all Xonar users who post there issues here. So, thank you very much in advance for hopefully reading my post, too.
    For 2.5 years now I used the UNi Xonar 1822 v1.75a r2 driver on my Windows 7 machine without any issues.
    Now, I freshly installed Windows 10 on it, and used the 1823 v1.80a r3 driver from there on instead. Since then, I am experiencing huge DPC problems from time to time. They come and go seemingly randomly and always last for 3-4 hours.
    I now switched to my internal sound card, and the problems are gone, so I assume it is (as it's also stated here on this page) a problem between Win10 and my driver. My windows version is 10.0.19042. Do you have any recommendations for a driver that I should use instead? Thank you, again, in advance!


    • CarvedInside18 Nov 2020 @ 04:23

      Hi. Before I try to help you, I need to know something. It's becoming very hard for me to spend more of my time helping out people completely free, especially when they can't even disable AdBlock and help out a bit with the costs of keeping this website online. Since I don't recognize you as one of those that donated previously, if you did, please send me an e-mail from the e-mail address associated with the donation and mention your nickname.


    • Mashed Buddha26 Feb 2021 @ 00:07

      Thanks for your hard work, donated. No support needed so far, just some comments. It may be my imagination, but the sound, and surround experience seems better than I remember. I have Logitech 5.1 surround speaker setup from many years ago.. I have a Xonar DX for many years now. Always just reinstalled the card and the standard drivers with each new system upgrade. This time, the surround test speaker icons produced no test sounds. It *seemed* as though no surround in games. Test games: Witcher 3 and Cyberpunk 2077 ( I know same developer, so potentially same sound issues).

      I was thrown off by not getting the surround test to work in the Xonar control panel. Looked into Windows 10 sound settings, and 5.1 was already set. Used a Youtube test with only stereo results, and seemed like everything added up to my srround wasn't working for some strange reason. (mistake, I know but I was baffled that someone would post a 5.1 test video that is completely false - cast it later to my living room and there was no surround lol).

      Surround worked in the PCs before with this card and their driver. Ultimately I don't think it was an issue with the driver, I think I was just thrown off and it was abnormal that the test speakers made no sound.

      I installed your drivers (selected the wrong one a few times first, that didn't help my confusion lol). Once I had it right - and I see the same control panel - also the same issue not being able to test surround. I found the Windows 10 test - yes there is one that tests 5.1 not just stereo - and it worked....

      Finally I installed your driver with the C-Media control panel and that test worked, and surround works great now, and I can't help notice that the quality seems even better. And I'm only doing the sound at 44.1 . Who knows, could be my imagination. I'm curious if these custom drivers could have that affect on the sound? Now I'm going to try higher sample rates.

      Anyways, thanks!


      • CarvedInside26 Feb 2021 @ 03:46

        You've replied to someone else's comment instead of posting a new comment. To post a new comment you need to use the comment form at the bottom of the comment section. Please redo your comment as a new comment and we'll discuss there.


  2. XspartanTT29 Nov 2020 @ 21:56

    Does someone know if this great driver works on windows 20h2 aswell?


  3. Nova13 Dec 2020 @ 18:57

    Still working great in 2020! I used the (1.80a r3 ver - windows 10) on an Asus Xonar DX and its still running fine. Can't seem to get the front port headphone to work (HD audio connector attached to card, but no dice), but all is good in the world. Have a coffee on me!


    • CarvedInside14 Dec 2020 @ 08:19

      Thank you for the coffee!:)

      Glad to hear. If you can share with us which version of Windows 10 you're currently running.

      Regarding your problem with front panel. Did it ever worked for you? You did switch the output to front panel in ASUS/C-Media Panel right? Does the the front panel work if you use it the motherboard onboard audio card?


  4. agsdoom14 Dec 2020 @ 23:16

    i use 7.1 with this :I logitech z906 and logtech 2.1 :I to make it 7.1 in Media Player Classic u can chose layers where the sound comes from sides sides there is boxes u can light up and make it 7.1 and sound card set to 7.1 😛 works grate just diffrent sound from side speakers but watching movies dsnt matter at all cant even notice bcs focusing 7.1 movie 😛


  5. Abue16 Dec 2020 @ 17:31

    Just an update on my case using the extender on the STX II , the crashes are back to about once a week randomly, mostly discord triggering. I do notice it's because of the relay switch to front panel or since I started playing with the ASUS software forcing the relay switch, and when discord is open it's almost a 100% reboot. Is there no way to disable the front panel relay at all on the card through drivers? In my case I only need the headphones. I haven't tried connecting the front panel audio connector to the actual card and triggering the switch to see if that would do anything yet either. In part i'm concerned the problems arose again because of some windows updates since i had 6 months + of no crashes on the normal drivers. I did give in and ended up buying a Fiio k5 pro at this point since the crashes are hurting my workflow :/


  6. akulp17 Dec 2020 @ 20:20

    Hi. I'm Using Xonar for 3 years with my Xonar DXG and 5.1 Logitech speakers connected with analog 3.5 inputs. Working great!

    Now I bought Logitech Z906 speakers and connected Xonar DGX ver SPDIF to have DTS/DD (supported by speakers). I have few questions.

    1. Is there any way to control room correction - speakers volume for rear speakers? I can only change volume for left/right side, front speakers don't change volume at all. Using Xonar DXG Audio Center or C-Media Panel.

    2. Is there any newer drivers which support DD Live?

    My system: Windows 10 Pro, Xonar DXG
    Drivers version: https://ibb.co/Y76Mx7X

    Thank you!


  7. plzhelp10 Jan 2021 @ 07:38


    my Xonar DG stopped working a while ago and I've now finally decided to try to see if I can fix it. I first noticed the problem when my speakers stopped working and further investigation led me to realize that windows is not recognizing the sound card. I tried installing new drivers from ASUS, but because the sound card was detected, I couldn't install them which led me to UNi drivers. I then tried to install UNi drivers and got the message "Error: Compatible audio card not detected." Can anything be causing this other than having a now defective sound card/PCI slot? Nothing shows up under device manager/sound except for AMD HD audio and Realtek HD audio.


  8. nef14 Jan 2021 @ 15:33

    I have Xonar STX have problem with lowering volume in Windows 10. When it is at max level, everything is fine. However, when volume is lowered, one of the chanels completely disappears, and sound is present only in one of the speakers. If I remember correctly, I'm using drivers 1.80a. Do you have any solution to this issue?


    • CarvedInside18 Jan 2021 @ 15:04

      Check that the op-amps on the card are properly seated.
      Do you have the same problem with the other outputs (headphones, front panel output)?


      • nef26 Jan 2021 @ 23:07

        Thanks A LOT for this advise. I would never think of it and it exactly solved the problem. Strange thing, because I haven't moved PC anywhere. And nevertheless, I've found out that I have custom first OP-Amp from Teradak (I bought card second hand few years ago). Does somebody know if this Teradak is any good? Until now I had nothing to complain, but I thought this is just regular sound of this card. Thanks!


        • CarvedInside27 Jan 2021 @ 23:33

          Great to know that it worked. I would appreciate a donation from you as a token of gratitude for my work and support. Mention your nickname in the notes. If you've previously donated, it would be good to know, so please send me an e-mail from the e-mail address associated with the payment and the text "Hi. I'm nef from the comments."


      • nef27 Jan 2021 @ 03:16

        One more thing - although RCA is now working perfectly fine with all volume range, the 6.3mm jack for headphones is giving me sound only in left ear. No matter if volume is at max or not. Does this could be repaired by replacing op-amps in the sockets?


        • CarvedInside30 Jan 2021 @ 06:14

          Did it ever worked for you? Does the front panel output work?
          As I understand the circuit board of the Xonar STX, in this case, the problem is not related to those op-amps. Instead it could be related to the audio cable or it's 6.3 input jack, it could be that output jack on the card came partially unsoldered or some other component on the cards PCB became partially unsoldered or it's damaged, like the headphones amplifier.


          • nef30 Jan 2021 @ 12:59

            Hi! The headphones worked quite recently - one or two months ago, on any output. Now they don't work correctly on either rear 6.3 jack and on front panel, I've tried few headsets, the problem is somewhere in the card.


            • CarvedInside30 Jan 2021 @ 22:36

              So it's not the jack output. Before concluding it's a 100% a hardware issue, like with the headphone amplifier or something else, try the following:
              1. Uninstall and reinstall the Xonar drivers, to make sure that this is not caused by any settings you've might have changed.
              2. Without anything connected to the 6.3 jack output, go in ASUS Audio Center, with Headphones output selected, click the hammer icon and switch between those gain settings a few times. Then also change between the sample rate settings.


              • nef07 Feb 2021 @ 16:53

                Hi! Unfortunately, this gave no result. The only working analog output with right channel is "2 Speakers". Both normal and FP Headphones and also FP 2 Speakers are completely mute on right channel.


                • CarvedInside08 Feb 2021 @ 19:32

                  Upon checking things further, maybe the op-amps could also be the issue in this case. Check the op-amp switch instructions for the STX. Since you probably don't have another set of op-amps, you could swap between A and B op-amps and see if the channel that does not work swaps also.


                  • nef09 Feb 2021 @ 20:51

                    Hi! Unfortunately, after swaping L/R opamp, the missing channel remained the same(R). How do you think, could the problem be on headphone Op-Amp, soldered TPA6120A2? But then, why it is still present on front panel, for both "Headphone" and "2 Speakers" settings?


                    • CarvedInside11 Feb 2021 @ 08:02

                      I don't think that headphone op-amp is the problem. I don't have any other idea what you could do or check other than finding someone who fixes electronics maybe he can find the problem and fix it. If you find out what is the cause of this issue please let us know.

  9. Eros20 Jan 2021 @ 14:25

    On Windows 10 20H2, x64, with driver UNi Xonar STXII 11.5 v1.80b r3, about once per 2 weeks, absolutely randomly I get high pitched screeching at high volume. It lasts about 1 minute or so, then goes away. Pressing mute button mutes all audio except screeching. I checked Xonar Audio Center and its audio graph doesn't register screeching.
    On Windows 7 I never experienced such issue.


    • CarvedInside21 Jan 2021 @ 18:03

      Repost this comment under this page. Add your sound card, if you had this problem with prior Windows 10 versions and specify which mute button (on keyboard, Windows Volume tray icon, etc.).

      Update: I moved it here. I suggest you check that webpage and the proposed solutions. Update us there.


  10. MrChow28 Jan 2021 @ 13:38


    I've got quite a problem with my Asus Essence STX II 7.1 and can't find a way to fix it, even with your provided drivers.

    After rebuilding my PC setup some weeks ago and combining it with an Teufel Concept Cl300 5.1 System, I can't get any other speakers than Front L and R to work. They aren't even shown in my sound setup, there are just the L and R RCA Jack listed (sound system is connected via the analog outputs). So it seems, like the extension of this sound card for Surround and Mid/Woofer Output isn't recognized. In the C-Media Panel or Asus Panel I can't find a way to enable 5.1 as well.

    Does someone have any ideas how fix this problem?

    I tried everything I could, contacted ASUS (they couldn't help me too) and wrote in several forums. No help so far. So I would be extremly glad to get some help from you. Thanks!

    Here are the things I tried so far:
    - reinstalling common Asus drivers
    - checking sound card and extension installation and connection
    - doing windows updates
    - doing mainboard updates
    - installing UNI Xonar Drivers with Standard Asus Control Panel and C-Media Panel

    System Specifications:
    - AMD Ryzen 9 3900X
    - ASUS Rog Strix X570-E Mainboard (Driver version 3402)
    - ASUS Essence STX II 7.1 (Driver version )
    - Teufel Concept E450 5.1 Surround System
    - Windows Version 20H2 (Build 19042.746)


  11. Mount8130 Jan 2021 @ 08:09


    I guess I have the 1.80a version installed for my Xonar DS card on an updated Win10 system. As I remember I have installed the "driver only" version. What interests me, is that despite I have the "Unixonar audio" and than C-Media audio panel and Xonar audio center apps seemingly installed (shown In the Start menu). So my question is, that could anything be messed up, if I start these app (just to check them out for curiosity), as I did install in "driver only" mode according to the descriptions to have as less incompatibility and pure sound quality as possible. Thanks for the reply!


    • CarvedInside30 Jan 2021 @ 23:07

      Hello. From what I can tell, you've installed UNi Xonar drivers with "Low DPC Latency" configuration. Yes, you can open either of them without permanently affecting your existing card settings. But if you open (ASUS) Xonar Audio Center, then your system will have an increased DPC Latency until you restart your system. You can read more about this and others in the configuration comparasion table from here.


      • Mount8123 Feb 2021 @ 05:18

        Thanks, have tried out the C Media Panel, but nothing I have changed, as it has far too much options, that I rather don't need, or don't exactly know what it effects jet. But one thing caught my eyes, that made me unsure again, that in the Main Setting panel there are those four DPS modes listed, which had the "Xear Surround Mode MAX" button turned on by default (in blue). Don't know if this is the right setting by default, or what it does exactly and why is it (seemingly) turned on? I only use the analogue stereo output for active 2.0 speakers jet. Is this setting a right one in my case? Could you give some information clearance regarding? Thanks!

        Later edit: Sorry, just a little correction and add-on: correctly it is the "Xear Surround MAX" mode button (the fourth one) that is turned on by default and as I've googled it a bit, it seems to be some stereo-> virtual surround upmixing feature, which I very doubt to be useful in my case. Mostly I listen music, or playing some games on this PC, but all only on a stereo Speaker set. So I have the doubt, that it would do any good with the sound quality in my case...???


        • CarvedInside24 Feb 2021 @ 11:20

          "Xear Surround MAX" is for stereo upmixing 2.0 sounds to 4.0, 5.1 or 7.1 speakers. It does not affect your current 2.0 speakers setup output.


  12. Senseya11 Feb 2021 @ 00:01

    I search every where on your website and internet about my sound card Asus Xonar SE bought in 2020.
    I am playing video games with headset turtle beach elite 800 (bought for PS4) and it run by optical. I want use it on my pc so i bought xonar SE because it was right 5.1. I didn't know that not concerned optical output. My games sounds bad, 2.1 if i understood.
    Can you tell me if i can find a driver which run for my xonar SE ? Because when i try to install UNi-Xonar-W10-1825-v1.81a-r2, it tells me that no component is compatible.
    Thank you


    • CarvedInside11 Feb 2021 @ 08:09

      Xonar SE is not supported by any of the UNi Xonar drivers. Xonar SE has a different audio chip with different base drivers than the supported Xonar cards.
      I don't have and most likely will not make a modded driver for Xonar SE cards.

      You may find some useful information on how to correctly setup your card by reading the guide that I wrote for the UNi Xonar supported cards. You may also find some info and help on the ASUS ROG soundcards subforum.


  13. Curious13 Feb 2021 @ 23:30

    Installing Zoom has messed up my mic. I have uninstalled zoom but the mic has a very low volume. Is there a way to reinstall the mic drivers without doing a complete reinstall of your drivers? We have been using your drivers for years and absolutely love them but it is a lot of work to set things back up the way we like them. going to do that as a last resort. We have a d2x using driver version 1.71


    • CarvedInside14 Feb 2021 @ 01:33

      Open Windows Sound-> Recording tab-> select "Microphone (ASUS Xonar...)" and press "Set Default", then double click on Microphone, go to Custom tab and select "Microphone boost", then go to Levels tab and check that the volume is 100%. Let me know if any of these settings needed doing.

      For easily saving and restoring your preferred settings you could use XonarSwitch and create a profile there or use the Backup and Restore functions by right clicking on XonarSwitch tray icon->Options.


  14. chhagan21 Feb 2021 @ 02:17

    Help me please, no sound by Xonar DG in Windows 10 version 2004.


    • CarvedInside21 Feb 2021 @ 02:29

      Is the Xonar DG card properly detected when you run the UNi Xonar driver installer? Or it does show the error that no Xonar card detected?
      After driver install, does the ASUS Xonar DG appears in Device Manager(in Windows Run or Search type devmgmt.msc or right click on Computer->select Manage->select Device Manager) under "Sound, video and game controllers" category? When you double click on it, does it show "This device is working properly" under device status?



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