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UNi Xonar Drivers 1.75 (post periodically updated)

Page updates/changelog (new or updated stuff in the post will usually be colored in red):

  • 28 Oct 2014 : UNi Xonar v1.75a rev.2 drivers are released.
  • 23 Oct 2014 : UNi Xonar v1.75b rev.2 drivers are released.
  • 22 Oct 2014 : UNi Xonar v1.75 drivers are released.
  • 06 Jan 2014 : UNi Xonar v1.72 and v1.64 rev.2 drivers are released.
  • 10 Sep 2013 : Good news everyone! If you ever wanted to save Xonar settings as switchable profiles,  access to most of the settings while staying away from the Asus Xonar Audio center or just wanted something better than the Standalone Apps then you should head on to XonarSwitch Beta page (by Giulio).
  • 29 Apr 2013 : Added Headphone AMP switch to the standalone apps pack.
  • See more post updates

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, Xense, STX II.

  • 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. (more…)


UNi Xonar Features

FAQ & troubleshooting guide (updated 27 Feb 2015)

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

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 UNi Xonar 1818+ 1.7x

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.

The 1.75 drivers come in two variants:


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).

1.75a rev.2:

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

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.


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

1.75b rev.2:

  • 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.
  • These drivers do not work for the other Xonar cards on Windows XP.
  • XonarSwitch does not currently work with these drivers. Support added in XonarSwitch v0.9.555.

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.

Possible issues:

  • Occasional Left or Right speaker imbalance or volume drop. This is a different issue that the L or R volume drop issue that some people have regardless of the drivers they install. There are 2 user reports for this issue.


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


Note about Windows 10 Tehnical Preview builds compatibility (updated 28 Mar 2015)

UNi Xonar drivers above v1.64 will work in Windows 10 TP but since the drivers are not made for Windows 10 TP there could be some issues here and there (e.g.,  this one). Different drivers could work differently so if you encounter any issues try installing the other UNi Xonar versions.

Due to changes within the Win10 TP builds and the very slow development of the audio drivers by C-Media, it may take a while before we have a 100% compatible driver for Windows 10. It could take up to 2-3 months after the final release of Windows 10.


Driver Downloads (for Windows only):

  1. UNi Xonar 1816/1822 v1.75a r2  mirror1  mirror2   (latest)
  2. UNi Xonar STX II 11.5 v1.75b r2  mirror1  mirror2   (latest)
  3. UNi Xonar 1816/1822 v1.72    mirror   
  4. UNi Xonar 1816/1821 v1.71    mirror
  5. UNi Xonar 1814/1818 v1.70   mirror   
  6. UNi Xonar 1814/1815 v1.64 r2   mirror    (proven stable)
  7. Older versions : v1.63 beta; v1.62 betav1.54 ; v1.61 ; v1.53

Official addons (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 : 

1. Standalone apps pack* & mirror (legacy, check XonarSwitch instead) containing :

    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.

*All these apps are based on scripts created by Virus. Before running the files, close any audio source/application.

2. Other Xonar related applications:

    1. Front Panel switch new versionmirror (by Virus; notes)
    2. ASIO settings viewer/changer (ext link)
    3. Audio re-starter for sound loop problem for Win Vista/7/8 by Razord93 (ext link)
    4. Xonar-EQ – Control Xonar equalizer settings from your Android phone or tablet. By Sascha.


  1. JP    25 Mar 2015 @ 09:57   

    I’ve been running this driver for a long time, with no issues. Just recently, I had to restore my computer. I then reinstalled the driver, which was an older version, and sound works fine. I can’t for the life of me, get the microphone to work though. I’ve made sure that the front panel microphone box is unchecked, made sure the window settings are correct as well. What can I do?


    • CarvedInside    26 Mar 2015 @ 20:31   

      Try reinstalling the driver. Try different drivers. Check if the microphone works with onboard audio card.


      • JP    27 Mar 2015 @ 02:51   

        I believe I may have found the problem. My headset wire, has a knick, and it looks as though the microphone wire has been cut. I’ve ordered a new headset, which I believe will fix the issue.


  2. Venla    25 Mar 2015 @ 11:15   

    I have Asus Xonar d1 and drivers 1.75a noticed that i can´t enable prologic 2 unless i disable speakers from windows ,using windows 8.1 pro 64bit,when i disable speakers i can use prologic 2 but cant change speaker setup or channels


    • CarvedInside    28 Mar 2015 @ 00:15   

      Which audio panel are you using for enabling Dolby Pro Logic II? Have you tried with previous driver releases like v1.64 or v1.70?


      • Venla    28 Mar 2015 @ 15:07   

        i tried previous and all worked fine now i have 1.75a c-media 1822 with gx enabled


        • Venla    28 Mar 2015 @ 15:25   

          got it working just followed instructions bout installing addons and older c-media panel now working ok


  3. linkdarkmx    28 Mar 2015 @ 10:33   

    Hi!, i currently have a 5.1 headset Real (4 speakers per side) in the original menu Asus, can amplify the stereo headphones, but it is impossible to have to select 5.1 output, is there any way to amplify the headphones in 5.1 as in the case of stereo headphones?


    • CarvedInside    28 Mar 2015 @ 18:38   

      Are you referring to headphones impedance options? That’s not possible to use that in a 5.1 setup.
      If you need a higher volume you could raise each channel volume slider from the Mixer tab.


  4. Mattias    28 Mar 2015 @ 12:46   

    Hello – I’m really liking this driver, unfortunately it doesn’t fix my big issue with the standard driver. Basically, I have to toggle onboard audio on/off through BIOS in order to use my Asus Xonar Essence ST card. If my onboard audio is enabled it will seem like the xonar works when you look at the output (well, animations) of the sound, but no sound comes through my headphones. In short, I have to turn onboard audio off in the BIOS to use my headphones. I would love to be able to switch back and forth between them (and yes, this is easily possible, except there is no sound coming from the headphones, even though sound animations are going up down up down). I don’t know if there’s a fix for this… I’ve looked. So I was hoping you’d have the answer to it <3


    • CarvedInside    28 Mar 2015 @ 18:54   

      Hi. Which OS do you have? If you disable the onboard audio card in Device Manager, does the sound come out of the Xonar card or not?
      By output animations I assume you are referring to the device output’s visualization in Windows Volume->Playback Devices. But does that correspond to the Speakers ASUS Xonar ST Audio Device?
      Check that you have set “Speakers ASUS Xonar ST Audio Device” as default in Playback Devices when you have the onboard card enabled and check in the audio/video player settings that the output device is either Windows Default or the Xonar ST card. If those settings are correct you should look into updating your motherboard BIOS if newer versions are available.


      • Mattias    30 Mar 2015 @ 18:22   

        Hi, thanks for the reply.

        I’m running Windows 7 on an ASUS p8z68 board, latest BIOS driver (although, it was released 2012).

        I tried disabling it in the Device Manager, but it made no difference unfortunately. I’ve also tried removing Realtek Audio Driver just in case, but no dice.

        Yes indeed it does correspond to the correct audio device, it’s even showing the animations in the Xonar Audio Center application.

        When I boot to linux it works just fine to switch between the devices, of course there’s no special driver installed then, just some standard one.


        • CarvedInside    31 Mar 2015 @ 23:42   

          Update your Windows if you’ve haven’t applied updates. Try plugging the ST card in different PCI slots. Try different UNi Xonar driver versions. If none of these help, I think it’s an issue with your motherboard (which could have been fixed through Bios updates if ASUS cared). Here is a similarly strange issue that’s was caused by the ASUS motherboard.



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