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 and issues


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. FBJ04 Mar 2021 @ 18:22

    Same issue as 'chhagan' back there.

    Believe it or not I bought a Xonar STX back in 2013 but I'm only unboxing it now (used a Creative gaming card since then). I'm on a fresh installation of Windows 10 (20H2) and while Device Manager does show my card ("this device is working") and there does appear to be an audio signals being passed to it (tests show the visualizer in the control panel responding), I cannot hear a thing. I have downloaded and installed the Low DPC Latency version of driver 1.80a r3.

    Any advice?


    • CarvedInside06 Mar 2021 @ 21:39

      Do you have the same problem with the other outputs (headphones, front panel output)?


      • ProgLogic25 Mar 2021 @ 02:04

        I just got the STX and and am having the same issue on Windows 10 20H2. I installed the 1.80a R3 drivers and can't hear anything; before I installed the drivers the card wasn't even showing up in Device Manager. I tested the integrated Realtek and that still works.
        Unfortunately, the Lenovo desktop I'm using has a proprietary front audio connector, so I can't test that part of it. I'm rebuilding my computer soon with a non-proprietary motherboard though, so I will update once I have that set up.


  2. Mashed Buddha06 Mar 2021 @ 00:12

    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!


    • CarvedInside06 Mar 2021 @ 21:37

      Thank you for the donation.

      From what I understand, the speaker test in ASUS Audio Center did not work for you for all 5.1 speakers but only for the front speakers? Which driver version did you install?

      Regarding the improved sound quality. On original drivers, if you would not manually change sample rate from 96kHz to 44.1kHz, just like UNi Xonar drivers do by default, you would definitely have a much worse sound quality. Another thing that would result in a better sound quality or better sound experience in games and 5.1 content is from the fact that with UNi Xonar drivers there are no delays for Rear and Center channels in 5.1 output configuration. Having ASUS Audio Center or C-media Panel as default does not affect the sound quality.
      The only way to know for certain there are sound quality differences is if some differences show up in objective benchmarks like with RMAA. Over the years I did RMAA tests between various audio drivers and configurations, I never observed significant differences between any them.

      If you haven't done so already, I recommend you read the Xonar best settings guide.


      • Mashed Buddha07 Mar 2021 @ 02:41

        I can't recall exactly but I believe there was no sound whatsoever (no "left front" female voice etc) when I clicked on the speaker icons in both the Asus installed control panel (cp) and the Uni Asus replica cp. But the C Media test interface makes all the right indication sounds for all speakers. It's odd, and as I may have mentioned, the previous installations always gave me correct test indications with Asus cp and drivers. The Asus driver I used is the most recent one.

        So I really should just leave the sample rate at 44.1 or 48 because the audio content released in games I'm sure is almost always one of the two. Do you concur? Unless there is good upsampling of some kind but that may not translate in this scenario.

        I have my Windows 10 set to 24 bit/48 so I think I'll match that with C media settings.

        Kinda off topic but I just started using a Focusrite Red 16line in my home studio (separate PC), and the thing sounds fantastic. I have a Soundcraft Ghost board for all mic inputs I would want (fully miced drum set, keyboards, sax player, vocals, etc) - analog goodness into great A to D converters. I'm a musician but also an audio nerd haha. I can actively record at 192 - no stress on my PC - only hard drive space needed to accommodate that, preamps are on the board, so the Focusrite just swallows it all up and converts it.

        Also if you want to get really into the weeds I also have an Outlaw Audio 2.1 receiver for music - and B&W speakers/SW. Sorry I just love this stuff.

        Anyhow is Xear 3D an emulation of that Creative EAX thing? I disabled it per your recommendation.

        So the Asus drivers actually have latency in the surround channels?

        What do you mean by not noticing significant differences among the various configurations? Comparisons of your drivers with Asus for example?

        Also what speaker setup/brand do you use for PC gaming?


        • CarvedInside10 Mar 2021 @ 00:57

          Quite a few questions, I will respond with multiple replies, some of them later.

          I suggest you repeat the speaker tests from time to time, if at some point you get no response or wrong response from a speaker then let me know as there is something else going on.

          Regarding the speaker delay with ASUS original drivers. Yes you heard me right. With the original drivers, the Side and Rear speakers have a delay of 10ms and Center speaker has 15ms.

          Xear 3D (or GX) is the Creative EAX effects emulation. Keep it off.

          Regarding the RMAA tests I did to check the audio quality. I did tests between different audio driver versions (for example 1818, 1822, STXII 11.5, etc.), between panel configurations (Normal - Asus Audio Center, Low DPC latency, C-Media Panel) and between UNi Xonar and ASUS original drivers with the same audio driver versions and with the same sample rate settings.


          • billgates11 Mar 2021 @ 19:38

            The problem with the "objective" RMAA criterion is that this program only tests distortion at one static-sounding frequency, and not at all the" whole " sound in the speaker. At the same time, the output of the results in the form of numbers can be misleading, as if this is "the whole truth" about the sound quality. But this is not the case. Not to mention that rmaa does not test jitter. Meanwhile, there is a difference in sound between the drivers. I will not say now that this is a difference in quality. But the difference in the character of the sound is definitely there. Each user should listen to different drivers and choose the appropriate one to their taste. In my opinion, the drivers 1821 (clearer sound and good bass) and 1825 (softer, non-annoying sound) sound good on windows 10.

            I talked about the difference in sound for essence st, because other cards might have different sound with these drivers, or there might not be a difference in sound between the drivers. The two above drivers so far I think are the best on win10 x64 for essence st, because they're more natural sounding.


          • Mashed Buddha23 Apr 2021 @ 00:15

            Well again everything is working great for most games, but now I've run into an issue with some older games. Specifically Thief Gold and Thief 2, and getting surround to work. There are many workarounds for EAX and Surround results to function. I tried them and realized I didn't need any of them, all I needed to do was enable XEAR for EAX emulation along with enabling the OpenAL and EAX settings in those games' options.

            From there I was able to get 4.1 positional audio and EAX reverb effects. I don't know why no center channel but not necessary. So all was plenty good enough, along with updated textures etc, for a replay of these games from 20 years ago.

            But out of nowhere the surround speakers won't play audio in those two games any longer. I had already completed Thief Gold and moved onto the second game, and had positional surround until today, it's just not there any longer. Started trying different things, enabling, disabling options, etc to no avail. Loaded up Cyberpunk 2077 and there is surround sound. And all surround tests (in C-Media panel and Windows 10 test) work correctly for all speakers.

            I can't understand what could have changed, I didn't do anything different.
            Okay I did some more experimenting.

            While I was as certain as I could be that I had used these settings to achieve surround in these games:

            Xear enabled in C-Media CP.

            In Thief 2 game settings: - Hardware Sound: OpenAL (other settings here are On, Off)
            - Eax: On

            I was getting 4.1 surround, (maybe also the center channel, maybe not the SW, not important). I'm satisfied as long as there is positional surround from at least 4 speakers, essential for the Thief games, and more I can ask for given the age of the games.

            Then the surround in back oddly disappeared (EAX effects remained).

            Racking my brain, my solution now was to use Creative Alchemy - You load up this app and add the game's folder so it can add some .dlls and what not in there.

            I get EAX and surround (I think it's 5.1 - center ch seems to be working as part of the spectrum) -

            In game: - Hardware Sound: On
            - Eax: On

            And with Xear off (or on makes no difference, so leaving it off).

            So I have functional surround for these games again - it's highly possible I missed something before, hard to explain otherwise how it stopped working with those settings...


            • CarvedInside25 Apr 2021 @ 03:45

              I am not familiar with setting up EAX on Thief 2.
              Is this a new installation of Thief 2 or an existing one? Because I'm thinking that maybe you did these steps that made it work before, and now with the new installation you had to do them again.

              Since your on Windows 10, there is the possibility that a Windows update removed some of the required software components from your system (Creative Alchemy, OpenAL). If you want to have control over the Windows 10 update process look here.


              • Mashed Buddha27 Apr 2021 @ 04:54

                Yeah I was thinking something along those lines given the seemingly random change. I had just installed Thief 2 - and set up all the sound parameters pretty much to what I had in Thief Gold, and it was good, until it wasn't out of the blue, and then I went ahead with the Creative Alchemy solution which made it good again. Maybe OpenAL stopped functioning for some reason. Well soon I'll be done with the early Thief games, and once I get on to the third game Deadly Shadows I suspect more modern sound options.


        • CarvedInside01 Apr 2021 @ 10:31

          Regarding the sample rate settings. Sorry it took this long to respond. I've had other problems and also wanted to give you a more accurate answer. Here I've written a piece about with the information I know at the moment. If you want to comment further on this topic then please comment on that dedicated page.


  3. chhagan09 Mar 2021 @ 12:04

    I unisalled the maxedtech xonar unified drivers, and install asus default driver. i can here a sound using default driver but the sound is not comming through unified driver since if i installed unified driver with addons +dll. sound is also come through unified drivers if i unchaked addons. i need dolby plus addons. please help me and sorry for my bad english!


  4. ObiWan19 Mar 2021 @ 00:21

    Hello and sorry if this question fell in the wrong thred. You'll see, I'm thinking on buying a microphone that works with 5v exclusively. So I've been researching anywhere (and unsucessfully) for info about the voltage that Xonar DX manage on it'd line-in/mic-in port. So, do you have any idea if this mic would work here? Thanks in advance!


  5. Essence19 Mar 2021 @ 10:44

    Comment moved here.


  6. Jack08 Apr 2021 @ 17:27

    I have two DX 7.1 cards in my Win7 computer and would like to run them together to form a 16 channel platform for my orchestral compositions. I tried the oft recommended method with the Record tab in Sound, but it doesn't really work. I get lots of feedback even after blocking the microphone input, making the method useless. Do you have any advice on installing two separate sets of drivers for the card (which I tried but failed, because the driver would only install on C: on top of the first installation), or do you have any driver(s) for my purpose?

    Thank you, John.


  7. Shipon24 Apr 2021 @ 05:20

    I'm running a Xonar DGX in my PC and had the Xonar Audio Center set to "Headphones." I'll randomly leave my computer and come back to find the right channel is completely gone. It's just buzzing and screeching noises. I thought the card itself was defunct but after tinkering with the settings, changing the Analog Out to 2 Speakers instead of Headphones will remove the buzzing. Going back to Headphones will resume the buzzing. It seems to be a problem with the Headphone setting. I've tried this with 1.81 and 1.71 versions of UNi Xonar and am on Windows Version 20H2.


    • CarvedInside25 Apr 2021 @ 02:12

      1. Did you always had this issue or it started happening recently? If so, how recent?
      2. Are you using the Front Panel Headphone output?
      3. Does the issue ever occur if you keep the Analog Out to "2 Speakers"?


      • Shipon25 Apr 2021 @ 05:59

        I built a new PC and so this is my first time using this DGX soundcard. The issue happens somewhat randomly and goes away just as randomly. Restarting the PC doesn't make it go away, reinstalling drivers doesn't make it go away. I even purchased a new card and the problem persisted. It goes away on its own after seeming to leave the PC for an extended period of time. (Overnight/a full day) I am connected directly to the sound card and the issue has yet to happen when using the "2 Speakers" analog out.


  8. SusanRoux28 Apr 2021 @ 14:22


    First of all, thank you for making this so that we can still get value from products Asus no longer want to support.

    I am using the Xonar Xense card with the 3.5mm adapter (4 Aux Inputs) and the sound is awesome! But the microphone does not seem to work. I have tried your suggestions on the Microphone Privacy settings but I do not have those options in there.

    I am also using the MH630 headphones and the mic works without trouble on the onboard jacks.
    I only get a whizzing sound when monitoring the front mic and no other inputs seem to be working.

    Any idea what might be causing this?


    • CarvedInside03 May 2021 @ 17:39

      Sounds like it's a hardware issue with the card. Check the microphone connected to the front panel. Don't forget to switch the microphone to front panel in ASUS/C-Media Panel.


  9. Steve28 Apr 2021 @ 19:51

    I installed the UNi-Xonar-STXII-11.5-v1.80b-r3 drivers for the STX II solely and installation went fine. Driver cleaning does cause the setup to crash during install though. But the install process works fine without even without having to disable driver signature enforcement.

    I however seem to be getting the "Can't find any device" error from the Xonar Audio Center, UNi Xonar Audio and the C-media audio panel. Tried even disabling onboard audio. Nothing seems to work unfortunately. The card is in a PCIe 16x slot currently on my Asrock Taichi X470 with the 4.60 BIOS.



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