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UNi Xonar Drivers 1.80 (post periodically updated)

Page updates/changelog:

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

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

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


UNi Xonar Features

FAQ & troubleshooting guide (updated 27 Feb 2015)

Useful tips & suggestions | Known issues & workarounds (updated 27 Feb 2013)

UNi Xonar installer addon documentation

Having problems installing UNi Xonar drivers? Refer to this topic

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

A WORD ABOUT 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 (like 2 to 5$). Bear in mind you don’t donate for ASUS & C-Media intellectual property & work, you do it for the work that I have done.

CONTRIBUTIONS – Contributors list here.

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


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.
  • Windows 10: Fix for microphone not working with some 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).
  • 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.

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.
  • 1.80b “STXII”

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

Driver changes:

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

Other notes:

Rev. 2 changes:

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

Rev. 3 changes:

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

Possible issues:

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


Release notes 1.75

UNi Xonar Installer changes:

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

Known issues:

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

The 1.75 drivers come in two variants:

  • 1.75a “Standard”

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

Rev.2 changes:

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

Known issues:

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

Possible issues:

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

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

Rev.2 changes:

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

Driver changes:

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

Other notes:

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

Known issues:

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


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.

Release notes 1.71

Driver changes:

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

UNi Xonar Installer changes:

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

Known issues :

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


Release notes 1.70

Driver changes:

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

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)


Release notes 1.64 rev.2

  • 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.

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.

Read Previous Release Notes


Notes about Windows 10 RTM compatibility (updated 28 Nov 2015)

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

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

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

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

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

100% compatible drivers when?

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

Update 01 Oct 2015: 1823 audio drivers are the first drivers released for Windows 10 by ASUS/C-Media. Whether they perform any better than 1822 or STXII 11.5 drivers remains to be seen.

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

Update 27 Aug 2015: The stutter issues on youtube are  fixed with the latest Chrome build released on 20 Aug 2015 (v 44.0.2403.157). Reports indicate that stutter issues are still happening for videos on other websites (eg. daily motion, facebook, instagram).

Update 7 Aug 2015: After some testing and some reading it seems that the stuttering issues are not related to the UNi Xonar drivers. I’ve got the same behavior with Realtek’s onboard audio and from what it looked liked. My guess the issue is caused either by Windows 10 or Chrome.

There is a Chromium issue opened here.

Here are some things you could try:

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

Driver Downloads (for Windows only):

  1. UNi Xonar 1816/1823 v1.80a r3      mirror1     – latest
  2. UNi Xonar STXII 11.5 v1.80b r3      mirror1
  3. UNi Xonar 1816/1822 v1.75a r2       mirror1      mirror2       – recommended
  4. UNi Xonar STXII 11.5 v1.75b r2       mirror1      mirror2
  5. UNi Xonar 1816/1822 v1.72    mirror   
  6. UNi Xonar 1816/1821 v1.71    mirror
  7. UNi Xonar 1814/1818 v1.70   mirror   
  8. UNi Xonar 1814/1815 v1.64 r2   mirror    – proven stable
  9. Older versions : v1.63 beta; v1.62 betav1.54 ; v1.61 ; v1.53

Official addons (documentation):

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

3rd party addons page here.

Standalone applications for changing settings or enhancing audio: 

1. Standalone apps pack / Mirror. Based on scripts made by Virus. Before running the files, close any audio source/application. Legacy, preferably use XonarSwitch  and configure it with separate profiles. 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. Xonar related applications:

    1. XonarSwitch (beta) – Alternative panel to Asus Audio Center and C-Media Panel. Allows you to control various Xonar’s audio settings, define them as switchable profiles, and apply them on-the-fly without having to stop the audio playback. By Giulio.
    2. Front Panel switch (new version) / Mirror. Release notes. By Virus.
    3. Driver re-starter for sound loop problem for Win Vista/7/8/10. By Razord93.
    4. Xonar-EQ – Control Xonar equalizer settings from your Android phone or tablet. By Sascha.
    5. UNi Xonar driver cleaner v1.01

3. Auxiliary audio applications:

    1. ASIOConfig – ASIO configuration viewer/changer that can be used when you can’t access the Xonar ASIO Configuration directly. By djdecks.
    2. SoundLock – Allows you to set the maximum output volume that sounds can be at. Can replace Xonar SVN in some cases (like limiting the volume of loud noises in movies). Works on Windows Vista and newer.
    3. SoundVolumeView – Alternative to Windows Volume Mixer. Allows a finer tune of applications volume levels and offers the ability to save them as different profiles. Works on Windows Vista and newer.
    4. Equalizer APO – A parametric/graphic system-wide equalizer. Works on Windows Vista and newer.


  1. mzso    30 Mar 2016 @ 16:59   


    In September it temporarily had win10 with a Xonar D1 and uni-xonar and got constant crackling, popping.
    Did the driver update that came after that (1.80) fix it it for anyone who had similar issues?


  2. my name    02 Apr 2016 @ 15:12   

    I finally managed to find what was causing the BSOD on my Xonar DG and windows 7, it was “headphones mode” >64 since I have a 250 headphones I pretty much need it
    After weeks of it in “2 speakers mode” I had no BSOD
    Is that a know issue with some workaround/channels/sampling config or just the hardware is broken?


  3. gary    04 Apr 2016 @ 21:24   

    i installed the 1.80r3 driver (low latency version) on my system which has a auzentech x-meridian 2g.
    now i see two playback devices in win7, the typical ‘auzen xmeridian’ one which has all the normal properties im familiar with,
    but i also see a new ‘cmedia oxygen hd converter’ listed as a speaker under playback devices….
    what is this second device, and when/why should i ever use it, since it was installed by 1.80r3?


  4. AccelRock    06 Apr 2016 @ 17:17   

    Hi, I really love the work here. But I’ve been getting this high pitch whine issue with my Xonar Essence STX on Windows 10. Is this a know issue and is there any kind of fix/method of preventing it? I have had it 2-3 times in the past few months. Exactly the same as this guy here: https://www.youtube.com/watch?v=KVo9pwQ-W5I


  5. Eros    07 Apr 2016 @ 07:49   

    I noticed Linux (PCLinuxOS) giving out better sounding audio; richer sound with Xonar DX1. Why is that? Has or can the dev of UNi’s drivers check how Linux makes it work?


    • CarvedInside    07 Apr 2016 @ 19:41   

      I don’t know. There is a possibility that what you are hearing is a placebo effect or they just sound different by having slightly different default equalizer settings. I don’t know of any objective way to check this claim.
      There is nothing I can do to the Windows Xonar drivers from looking at the those Xonar Linux drivers.


  6. anon    08 Apr 2016 @ 12:32   

    Hey, why is v1.75a recommended over v1.80a?


  7. alexander    08 Apr 2016 @ 14:09   

    Skype is crashing on shutdown. I tested many solutions bu t I’ve this problem since 2 years now :/


  8. Dean    20 Apr 2016 @ 03:35   

    Quick query- never used to be an issue so a bit perplexed. Am running 1.75a on Windows 10 Pro x64 with a Xonar D2X. Windows is telling me that the device / driver is preventing entering sleep due to a System Required Request. Is this a known issue? Anyone know of a fix?


    • CarvedInside    21 Apr 2016 @ 14:23   

      But is something actually preventing your system to go to sleep or this is just shown in a report? There shouldn’t be any problems with sleep, at least with previous OS’s. If you have issues, try installing the drivers again. Are you by any chance using the ASIO output playback?


  9. George    22 Apr 2016 @ 01:44   

    Hello! Having this strange issue with my Xonar DG (UNi Xonar 1.80a r3, W10, Harman Kardon Soundsticks older model). After a system restart (maybe even waking from sleep, not sure, doesn’t happen always), I get no sound from the speakers. Windows volume settings are ok. It will only come back (immediately), if I just touch the volume control on the speaker i.e. the sound comes back the moment I alter the volume from the speakers. This didn’t happen with the onboard audio – not sure what can cause this.


    • CarvedInside    23 Apr 2016 @ 14:04   

      Hi. If I understand correctly you are touching the volume control on the speakers and not the Windows Volume Mixer for the speakers. If that’s the case I don’t see how this could have anything to do with the Xonar card.
      What I’ve noticed while using UNi Xonar 1.80a drivers is that many times after waking the computer my speakers weren’t getting any sound. Now since I went back to 1.75a drivers I haven’t had this issue.


      • George    24 Apr 2016 @ 20:51   

        Thanks CarvedInside, yes that’s correct. My assumption is that perhaps the drivers/card might send a ‘wrong’ signal on a system restart (or no signal at all) and the speakers automatically enter their mute (or self-protect?) mode? Probably not though. I’ll try the recommended 1.75a drivers to see if this still happens.


  10. Martin Plamp    24 Apr 2016 @ 20:04   

    hello guys :) i am new here and i am using a xonar dx with beyerdynamcis dt779 pro 250ohm (i dont need an headset amp there, loudness is great) … i am playing csgo and i am wondering which settings u can advice me? in the mom i play 5.1 ingame with dolby headphone (DH-2 setting) and 7.1 virtual speakers, 44.1khz (8 chanels) … with 1.80a driver … any thing i can do better? :) ty all 😀


  11. Mayur    25 Apr 2016 @ 01:39   

    I am facing 2 issues with my DX:
    1.crackling sound with 5.1 analog at 192khz
    2.slowmotion sound with 7.1 at 192 khz

    I have changed my motherboard previously it was working flawlessly. Previously I had different motherboard and processor which was Gigabyte and FX4300 and now have Asus le r2.0 and FX6300.
    After the new motherboard I am facing this issue what should I do?


    • CarvedInside    25 Apr 2016 @ 17:30   

      I’ve corrected your post so it can be easily read. If you want for people to help you please make an effort to write and format your text correctly next time. Add “.” at the end of the sentences. Write the names with capital letter (Gigabyte instead of gigabyte).

      How old is your Xonar card? If it’s manufactured at least 4-5 years ago, you could try updating the cards PLX firmware.
      This firmware fixes more things than those in the log. For downloads and instructions go to Asus Xonar DX download page, select Windows XP, go to Utilities and download PLX firmware update Ver 1.1. It works on Win7 (and probably 8/8.1/10) even if you’ve selected WinXP.

      You should also look into updating your motherboards BIOS.

      Update: Updated the link.


      • mzso    26 Apr 2016 @ 12:39   

        Would it be useful updating the firware on a D1? (Although I don’t see firmware listed for it.)
        I’ve always had problems: The left side going silent. Getting white noise after a seek.

        That link is broken. It redirects to the support main page.


        • CarvedInside    26 Apr 2016 @ 19:43   

          The firmware update is not for Xonar D1. The firmware update is for PCI to PCI-E bridge that PCI-E Xonar cards have.
          Your problems are from something else, maybe a bad card or a motherboard incompatibility.
          Thanks for the heads up regarding the broken link.


  12. Facu1ty    27 Apr 2016 @ 22:55   

    Hi, I use a Xonar DX on Windows 10. There it is necessary to select the number of source channels. (2 for MP3, 6 for movies etc.) Is it somehow possible to let the soundcard detect this option in an “auto-mode”?

    On an old computer with Windows XP running, the Audio Channels Selection isn’t even existing.


    • George    28 Apr 2016 @ 01:15   

      Check the FAQ, point 9 – your answer is there. No need for “auto-mode”.


      • Facu1ty    28 Apr 2016 @ 11:21   

        When I leave the number of source channels on 6, I cant use Dolby Pro Logic IIx to upmix stereo files back to 5.1. This just appears when I select 2 channels.

        I live in Germany. Unfortunately, Amazon prime for example offers no Dolby Digital 5.1 soundfiles on PC. But nearly every stereo soundfile countains the surround informations I want to hear. So at the moment, I have to choose 6 channels for Blu-Rays and DVDs and 2 channels for “Online-Movies”.

        Is it possible to install a Windows XP driver on 7?



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