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UNi Xonar Drivers 1.72 (post periodically updated)

POST updates changelog (new or updated stuff in the post will usually be marked in red):

  • 06.01.2014 : UNi Xonar v1.72 and v1.64 rev.2 drivers are released.
  • 10.09.2013 : Good news everyone! If you ever wanted to save Xonar settings as switchable profiles, or 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).
  • 29.04.2013 : Added to the standalone apps pack  the Headphone AMP switch .
  • See more post updates

UNi Xonar drivers are modded drivers for the following cards:

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

  • Other C-Media 8788 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 08.04.2013)

Useful tips & suggestions | Known issues & workarounds (updated 27.02.2013)

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 1.72

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.


Note about Windows 8.1 RTM compatibility

While drivers up to 1.71 work with Windows 8.1 , they are not fully compatible. C-media Panel is missing some options and its interface is a little bit different (it’s displaying its Win XP interface). I suggest you try XonarSwitch for changing the needed settings.

There might be some problems with WASAPI playback.

Highlights from previous driver releases

Read Previous Release Notes

Driver Downloads:

  1. UNi Xonar 1816/1822 v1.72    mirror     (latest)
  2. UNi Xonar 1816/1821 v1.71    mirror
  3. UNi Xonar 1814/1818 v1.70   mirror   
  4. UNi Xonar 1814/1815 v1.64 r2   mirror    (proven stable)
  5. Older versions : v1.63 beta; v1.62 betav1.54 ; v1.61 ; v1.53

Official addons (how to):

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

Standalone apps for applying settings: 

Standalone apps pack  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* mirror (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

Other apps:

    1. Front Panel switch new version*  (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)


  1. serpentiny    21 Mar 2014 @ 08:15   

    offtopic (not UNi Xonar related):
    Hello guys,

    I’m having the following problem. Soon I purchased H6 extended board to complete the HDAV 1.3 Deluxe version of the Xonar board in order to use an analog input.

    My system is:
    Intel Core 2 quad Q9300
    MB gigabyte P35T-DQ6
    2 x 4 GB RAM
    Logitech Z906 5.1 system
    Windows 7 Ultimate 64 bit
    Sound driver version: PCI_HDAV_7.12.8.1794_W7

    I’ve tried to run the analog output through H6 board but I got the following problem:
    There was sound only from Side L/R back speakers channel from H6 board and which comes from the front speakers.
    And there was a stereo channel of the main board too (white/red out) and there was no sound of other channel – Center/ subwoofer and front speakers!
    But I think it’s not the right way of connection because I think for 5.1 systems it should connect only the H6 output directly to amplifier of the Logitech Z906 (subwoofer back).
    I’ve tried everything install/reinstall Asus xonar drivers but there is no result.
    The cables is OK.
    The S/PDIF out is working properly, but I want to use analog PCM out.
    Was there anyone similar problem because I’ve tried everything with no result so far :(

    Thanks in advance.



    • sWi7zLe    07 Apr 2014 @ 15:27   


      I’ve noticed this strange sound since using this drivers which I thought was only happening when I used SVN but have just noticed it without it.
      When I stop audio playback, with or without SVN, I can hear this odd noise which fades in, gets slowly louder then stops suddenly after about 20 seconds.
      With SVN on I can hear it during audio playback too.

      Just wondering if this is a know issue? I’m using


      • CarvedInside    08 Apr 2014 @ 00:48   

        Why are you replying to a comment that has nothing to do with yours?
        It’s not a known issue and I don’t think anyone else reported something similar. Are you sure you don’t have this issue with other drivers?


  2. Oliver    24 Mar 2014 @ 09:54   

    Hi CarvedInside,
    I run a Xonar DG PCI under Win 7 64-Bit.
    Everytime my system wakes up from sleep the audio device has disappeared. The only fix is to reboot the machine. After reboot the device appears again and drivers (1.72) are working nicely again.
    Do you have any idea what I can do (or you can do to fix it ;-) ?
    Thanks in advance for your help and for your great work!


    • CarvedInside    24 Mar 2014 @ 16:18   

      Have you tried different drivers? After wake up, does you card show as a Unknown device or Multimedia Device in Device Manager, or it does not show up at all?
      Try different drivers if you haven’t until now. Try a different PCI slot. Try you card in a different PC. It could be something wrong with your Windows installation, it could be something wrong with your motherboard or it could be something with the card itself.


      • Oliver    24 Mar 2014 @ 16:42   

        thanks for the prompt reply!
        After wake up the card does not show at all in the device manager. After reboot it magically reappears.
        I’ve tried all PCI slots, all with the same result.
        I have tried the original Asus drivers that came with the card as well as the latest driver from the Asus website. With the Asus driver I wasn’t even able to install the driver since the setup program always asked me to install a Xonar device (which was already installed and which also showed up in the device manager) and would not continue the setup.
        Will have a look if there is a new BIOS and/or chipset driver version for my mobo.
        So generally speaking the Xonar DG and UNi Xonar drivers should support wake up after sleep?


        • CarvedInside    24 Mar 2014 @ 17:48   

          Yes, original drivers and UNi Xonar drivers do support wake up after sleep.


          • Oliver    28 Mar 2014 @ 21:40   

            Just a brief round up…
            Problem solved. Swapped out the PCI version for the PCIE version. Appearently my mobo has isses with walking up PCI devices.


  3. Sebastiaan    26 Mar 2014 @ 18:34   

    Hi CarvedInside and others,

    Is there a way to have independent volume control for analog and digital output? Actually I already will be happy to have just volume control for analog out. Digital out of course is managed by the receiver. Currently when using any volume control, both output ways are affected. I haven’t found any option/workaround.



  4. Andrey    28 Mar 2014 @ 08:30   

    Hello guys!
    Windows 7 x64
    Help plz today i buy Xonar D2. And my ID PCI\VEN_13F6&DEV_8708&SUBSYS_82691043&REV_00.
    All Uni drivers and asus drivers for Xonar D2 have ID PCI\VEN_13F6&DEV_8788&SUBSYS_82691043. Look diference between 8708 and 8788
    Wi replace in XonardD2.inf id in file for my id, drivers install, but no sound and if u go to control panel-> sound u got blue screen.
    What to do guys??

    And test mode dosent help..


  5. Jeremie    30 Mar 2014 @ 22:09   

    I’m trying to have a low ASIO latency setup on my XONAR STX to play virtual pianos on my keyboard.
    I use the C-Media Audio Panel which should allow low latency (if I choose “Low DPC latency” at installation, the drivers are not installed, the card is not recognized by windows).
    I installed the drivers and followed the optimization recommandations of the guide (set 48 kHZ, 24 bit).

    If I reduce the latency in the ASIO panel to a value lower than 20ms, there are cracklings…

    Any idea what the problem could be?
    I tried the latest drivers as well as the stable ones.

    Win7 x64 fresh install
    Core i3 Haswell + 16 GB RAM
    XONAR STX on analog 2.0 output
    Steinberg the Grand 2 piano


    • Nibbida    05 Apr 2014 @ 23:50   

      Hi Jeremie,

      Have you tried using ASIO4ALL drivers? Yes, they are third-party drivers but they work better than any official drivers I’ve ever used. They work great with my Xonar Essence STX 2 and I get 10ms latency without any audio problems.

      I highly recommend trying the ASIO4ALL drivers.


  6. Sam    05 Apr 2014 @ 16:18   

    Just want to say thank you for putting all the time and effort into making these drivers. I ran into problems with the original drivers (sounds just started coming only from the right channel). I installed these drivers and everything works perfectly.



    • CarvedInside    06 Apr 2014 @ 02:18   

      Thanks for sharing. Strange, I mean those who have one channel drop issue, do have it with both original drivers and UNi Xonar drivers (at least until the 1.72). Hopefully it will continue to work fine for you.


  7. Nibbida    05 Apr 2014 @ 23:53   

    I would like to thank the author of these drivers for his hard work. They work seamlessly with Windows 8.1 and I would donate if I wasn’t an unemployed university graduate.

    Just noticed that safe mode is no longer required for the drivers to work on Windows 8.1. You’re doing an amazing job here, no thanks to ASUS. I’m never buying an ASUS product again.


  8. Kosta V.    07 Apr 2014 @ 01:46   

    I have a Xonar STX. Is it possible to switch between headphones and speakers using software with the UNI drivers? The card has a dedicated headphone plug and I’d like to have them both constantly plugged in. Already installed the drivers using low DPC setting.


    • Sebastiaan    08 Apr 2014 @ 20:58   

      This is kind of where I am looking for too with a D2X/XDT, but then digital + analog.


  9. rankena    07 Apr 2014 @ 10:54   

    NEWS:Essence STX II & Essence STX II 7.1


  10. Bushzy    09 Apr 2014 @ 21:31   

    I recently acquired a Xonar DX and am currently running it with your unified drivers. Though I have read about ASIO4ALL lately and even see mentions of something similar in here. I read about what it does and it seems interesting but I wonder a couple of things: first off is the ms thing (usually around 10) people talk about only here when asio is set up or is it the case without it anyway?
    Also, can I just install ASIO4ALL on top of your drivers?


  11. Bushzy    10 Apr 2014 @ 01:01   

    Another question.
    I’m using a headphone, running everything in stereo. Most of the movies I watch are encoded in 5.1 I guess, forcing to use 6 channel as input (and headphones as output). I only play one game that uses 2d miles audio, and rest is music (FLACs). I don’t get any audio loss ingame or while listening to music leaving it on 6 channels, but everywhere I read about people using 2channels. How comes?


  12. res0nat0r    12 Apr 2014 @ 21:03   

    BSOD in cmudaxp.sys after Windows 8.1 (x64) Update 1


    To reproduce:
    1. Open for example XBMC in windowed mode
    2. Set audio output to wasapi
    3. Put your PC to sleep (hybrid sleep off)
    4. Resume
    5. BSOD will appear

    Is it only me? If not is there any chance for a fix in the next release?


    • res0nat0r    12 Apr 2014 @ 23:04   


      • the_mogg    13 Apr 2014 @ 17:36   

        I also have experienced occasional BSODs caused by cmudaxp.sys on resuming from sleep in Windows 7 64 bit.


        • rjeady    18 Apr 2014 @ 15:07   

          I also use Win7 64-bit, and have frequent BSODs when resuming from sleep or hibernation, and occasionally when shutting down my PC as well. Any ideas on how to solve this? It’s the same driver_irql_not_less_or_equal error as above.



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