UNi Xonar Drivers 1.81 (post periodically updated)

Page updates and announcements:

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)

Linked content:

  1. Introduction
  2. UNi Xonar Features
  3. FAQ & troubleshooting guide (updated 2 Sep 2016)
  4. Having problems installing UNi Xonar drivers? Refer to this topic
  5. Useful tips & suggestions | Known issues & workarounds (updated 22 Mar 2016)
  6. UNi Xonar installer addon documentation
  7. Poll: Rate ASUS Xonar driver support


  1. Release notes
  2. Windows 10 compatibility


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


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 $2 because of fees). Bear in mind you don’t donate for ASUS and C-Media intellectual property and 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 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.

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’s has to do with the settings that are being used.  My test where done with 2.0 analog output.

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:

  • STXII: 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 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, 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.


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 “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.

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

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


Release notes 1.70

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.

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.

Read Previous Release Notes


Notes about Windows 10 compatibility (updated 10 May 2017)

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 20 Apr 2017, 10 May 2017: Windows 10 Creators Update (build 1703) reported issues so far are:

Your feedback is welcome.  For those of you who run into severe problems after the Creators Update build upgrade you could roll back to the previous Windows 10 build (#1, #2). If that is no longer possible you can download an older Windows 10 build from here and install it without a internet connection present.

To prevent Windows 10 upgrade to Creators Update you need to either disable “Windows Update” service from Control Panel->Administrative Tools->Services or disable the Creators Update update with Wushowhide tool (guide on how to use it).

Update 30 Aug 2016: Thank you for the feedback so far. Based on the feedback received there shouldn’t be any problems installing the drivers on Windows 10 Anniversary Update (build 1607) whether it’s an upgrade or a new installation. One user reported that audio card was recognized only when installing the drivers when booting with Disable Driver Signature Enforcement option. Apart from drivers installation aspect, this new Windows build brings new problems for some users like the following reported ones: crackling or loud popping sound in the speakers, audio card not being detected sometimes or disappearing in Windows and 5.1 analog not working. For those of you who started having problems only after the Anniversary build upgrade you could roll back to a previous Windows 10 build (#1, #2). If that is not possible you can download a older Windows 10 build from here and install it without a internet connection present. To prevent upgrading to build 1607 you need to disable “Windows Update” service from Control Panel->Administrative Tools->Services.

Update 3 Aug 2016: Microsoft made changes to driver signature policy with the Windows 10 Anniversary Update (1607) that could make the Xonar drivers not working/installing anymore. There are some exceptions from this driver signature enforcement. At the moment it’s unclear to me if installing the drivers in Test Mode or with Disable Driver Signature Enforcement still works. I’m interested in hearing you experience under this discussion thread.

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 25 Jan 2017: 1825 audio drivers for Windows 10 are available. These are the first audio drivers that only work on Windows 10. Hopefully they will perform better than those that supported also Windows 7 and Windows 8.1.
  • 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 (Windows only):

OSDriver package name & download linkAudio driver ver. & build dateASIORequires Test Mode or Disabling Driver Signature Verification on x64 OS for:Notes
Win10UNi Xonar W10 1825 v1.81a r21825 / 22-Jun-20162.0.0.12STXII, HDAV, Xense, Razer AC-1Latest Win10. Might have more problems than previous releases.
UNi Xonar 1816/1823 v1.80a r31823 / 0‎2-‎Jun-20152.0.0.12STXII, HDAV, Xense, Razer AC-1Latest Win8.1, Win7, Win Vista. Might be more stable than v1.81a for Win10.
UNi Xonar STXII 11.5 v1.80b r3STXII 11.5 / 18-Feb-20142.0.0.14All cards except STXIILatest STXII signed driver. Fork from standard audio drivers (eg. 1822). Might have more fixes than standard drivers.
UNi Xonar 1816/1822 v1.75a r31822 / 11-Dec-‎20132.0.0.12STXII, HDAV, Xense, Razer AC-1Overall it might be more stable than v1.80a and v1.81a drivers.
UNi Xonar STXII 11.5 v1.75b r3STXII 11.5 / 18-Feb-20142.0.0.13All cards except STXIIFork from standard audio drivers (eg. 1822). Might have more fixes than standard drivers.
UNi Xonar 1816/1821 v1.711821 / 11-Apr-‎20132.0.0.12HDAV, Xense, Razer AC-1Win 10: might solve the BSOD’s after system wakeup from sleep. More info here.
UNi Xonar 1814/1818 v1.701818 / 17-‎Dec-‎20122.0.0.12HDAV, Xense, Razer AC-1
UNi Xonar 1814/1815 v1.64 r31815 / 03-‎Oct-‎20122.0.0.12STXII, HDAV, Xense, Razer AC-1Might offer better positioning in multichannel setups like 5.1 or 7.1 (info)
WinXPUNi Xonar STXII 11.5 v1.80b r3STXII 11.5 / 18-Feb-20142.0.0.14 –Latest Win XP. Fork from standard audio drivers (eg. 1822). Might have more fixes than standard drivers.
UNi Xonar 1816/1823 v1.80a r31816 / 11-‎Apr-‎20132.0.0.12 –Latest Win XP standard audio drivers.
UNi Xonar 1814/1815 v1.64 r31814 / 03-‎Oct-‎20122.0.0.12 –Might offer better positioning in multichannel setups like 5.1 or 7.1 (info)

Official addons (documentation):

  1. 1777 drivers + Asio 1.0. 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 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. 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 – Standalone driver cleaner based on the one that’s included in UNi Xonar drivers.

4. Auxiliary audio applications:

    1. ASIOConfig by djdecks – ASIO configuration viewer/changer that can be used when you can’t access the Xonar ASIO Configuration directly.
    2. 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.
    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.
    5. ASIO4ALL – Universal ASIO driver. Can be used instead of the ASIO driver included that’s included in Xonar drivers.
    6. MicMute – Mute microphone with a keyboard shortcut or make it work with a push-to-talk key for any application.



  1. Tom macky    03 Apr 2017 @ 03:27   

    These drivers are broken, with my reciever is unable to get 24/96 using spdif or any dolby or dts to light up, im using this with windows 10 and was able to get it working with older versions of unified in windows 7, are you guys able to look into that? ive tried every option with different players and settings with no avail……


    • CarvedInside    03 Apr 2017 @ 03:31   

      You’ve replied to someone else’s comment instead of posting a new comment. I fixed it. When writing a new comment use the comment form at the bottom.

      Which driver version? Your card is?


      • Tom macky    03 Apr 2017 @ 13:59   

        Sorry about that. Im using stx on the latest unified driver 1.81a r2


        • CarvedInside    06 Apr 2017 @ 00:39   

          I’m afraid there isn’t anything I could do about it.
          Just so I understand correctly, does this happen only with 1.81a r2 drivers or with previous releases as well?


  2. Jon W    06 Apr 2017 @ 14:22   

    Thanks for these, my D2X suddenly decided to only output from the main LR outs, found these drivers and it’s fine again now.


  3. Daniel Jørgensen    07 Apr 2017 @ 04:30   

    Hello. I plugged my Asus xonar essence st into a startech pcie to pci adapter and the microphone works fine but the sound only does for 1 to 15seconds when its just started up.
    i tried to start it disabling all start programs. reinstalling drivers ,trying different drivers.
    Asus Z270F motherboard

    The sound card worked fine when it was inserted directly
    current driver UNi-Xonar-W10-1825-v1.81a-r2

    Adapter :

    Do i really have to invest into a new pcie stx ?


    • CarvedInside    07 Apr 2017 @ 17:20   

      Hello. I don’t know of any fix, at least in regards to Xonar drivers. The StarTech adapter issues have been discussed in the past, you can view one of those discussions here.


  4. Oleg    07 Apr 2017 @ 15:05   

    when rewinding the video on youtube you receive the high-frequency squeak. windows 10 tried different versions of drivers. Asus Xonar STX


  5. Shooz    11 Apr 2017 @ 02:15   

    Just wanted to say v1.80a r3 is working great for me on Windows 10 Creators Update. Haven’t ran into any issues so far.


  6. varywolf    13 Apr 2017 @ 09:52   

    UNi Xonar W10 1825 v1.81a r2
    After a while, the multi-channel sound disappears everywhere except the UNI control panel itself and the standard sound check in Windows.

    I did not find a solution to the problem. Only removing the driver and reinstalling fix the problem


  7. Alpha16    13 Apr 2017 @ 14:48   

    I’ve installed the v1.81a R2 and it work good on Win10 Creators for me (D2X).

    Thanks for your hard work 🙂


  8. Jimi Hendrix    15 Apr 2017 @ 18:43   

    Is anyone else getting BSODs while watching YouTube videos and/or movies?
    Currently getting a BSOD (DRIVER_IRQL_NOT_LESS_OR_EQUAL) with the file cmudaxp.sys.
    Currently it seems like it’s happening with the latest release (1.81a rev.2).
    Running a ASUS Xonar DX with Windows 10 Pro x64 (Creators Update).


    • CarvedInside    17 Apr 2017 @ 12:18   

      Have you tried with previous UNi Xonar drivers?


      • Jimi Hendrix    17 Apr 2017 @ 20:25   

        Yes, currently using 1.80a r3 and they don’t seem to crash (so far).


        • Jimi Hendrix    18 Apr 2017 @ 20:38   

          Right, just had a BSOD with the older driver as well, same error, same file.


          • CarvedInside    19 Apr 2017 @ 09:12   

            Do you have GX enabled by any chance? If the problem is not from GX, I am afraid that there isn’t anything you can do at the moment other than rolling back Windows to 1607 build.


    • PeZzy    23 Apr 2017 @ 23:57   

      I would recommend to do a “C-Panel” only installation. The added software with a full install has HsMgr.exe and HsMgr64.exe at startup, which are considered poorly coded rogue software and some anti-malware companies are considering marking them as malware.


    • Bose321    15 Jun 2017 @ 16:39   

      Also getting loads of BSOD on W10!

      Did you manage to find a fix yet?
      Did a C-Panel installation work?
      Other drivers?


      • SK83RJOSH    16 Aug 2017 @ 15:19   

        I’d like to know the status of this as well; did you ever find a fix or did you end up giving up?

        Also I might have some additional info on this crash, as I’ve been using the latest drivers for quite a while without problems and only recently started experiencing bluescreens:

        I haven’t updated Windows recently as far as I know — but I recently started using the line in jack on my card; and that’s around the time the bluescreens started. I haven’t had a chance to test if this stops the bluescreens (and to be quite honest.. they’re kind of rare, I’ve experienced only two in a week or so.. I’m not sure I’ll be able to go a week without a microphone).


        • CarvedInside    18 Aug 2017 @ 16:03   

          You could use the onboard card for the microphone.
          You should check the UNi Xonar v1.71 and see if you still have get the BSODs with those.


          • SK83RJOSH    18 Aug 2017 @ 23:53   

            I might have to switch to onboard, yeah. The only downside to doing that ultimately is the fact that I use the loopback functionality quite often — and Windows built-in monitoring adds a lot of latency + a lot of noise to the output (probably the built-in audio doing that, though).

            Anyway, I tried completely disabling the microphone when not in use (via Windows sound wizard), and so far I haven’t experienced any bluescreens. I’ll also try giving 1.71 a try soon. Thanks for the heads up. 🙂


  9. Case    15 Apr 2017 @ 20:43   

    I’m having a weird problem after updating to Creators update (Win10 64) with my good old Xonar DX. I’m using Dolby Headphone and it seems that when running games (or at least some, I have tested just two so far, don’t have many games installed these days), the audio mix is now wrong (as in some sounds are much louder than others). It is especially noticeable in RaceRoom Racing Experience where most of the car sounds are deafening now – I have to turn the master volume in the game to something like 25 percent of where it was before, but then of course other sounds (like menu music) get very quiet. Another solution is to switch the sound setting in-game from 7.1 to stereo – then the audio mix is back to where it was before the update. It’s not just RaceRoom, though – I’ve noticed similar issue in Dirt Rally, just not as noticeable as in R3E. It might also be that the same issue (some channels being much louder than others) happens while watching 7.1 movies – I’m not exactly sure as I don’t remember how they sounded before the update.
    So far I went back from the latest 1825 drivers to 1823 drivers, but it didn’t help. Tried cleaning the Xonar settings completely and reinstalling from scratch – nothing. I’m gonna try some more things still (like trying even older drivers or perhaps installing the Asus control panel instead of the C-Media panel I normally use).
    I also have a second sound card I use for music recording (Xonars suck for this due to the input delay) and it doesn’t seem to have this problem at all, I can use virtual surround (not Dolby Headphone) with it in R3E without any issues, but I really like Dolby Headphone much more…:(
    Anyone got any ideas or tips? Thanks.


  10. Dean    18 Apr 2017 @ 23:39   

    Having some issues since creators update.

    Running a DX2 outputting to a 5.1ch AVR over optical (using DD:L).

    Having stereo upmixing enabled works fine, however using this and switching back to proper surround (for native 5.1ch sources) fails- after disabling stereo upmixing it’s not sending anything other than the 2 stereo channels. It’s still encoding in DD:L and the AVR is still seeing it as DD5.1, however I’m getting no sound from any speakers other than my front 2. If I set it back to surround (no upmixing, 5.1ch source) and restart my PC it goes back to working fine, however if I enable stereo upmixing at all (including upmixing with PL2) (which I like to do when listening to music) it breaks proper surround until the next reboot. This wasn’t an issue before the creators update.

    Worth noting while I didn’t read anything about it ahead of time I’ve noticed an option for “spatial sound” as part of the windows sound gui since the update. It would appear as though they’ve added support for a couple of headphone surround virtualisations. I’m guessing this may be causing the issue.

    Going to roll back to anniversary so I can determine that the creators update is definitely the cause of this behaviour.


  11. Adam    19 Apr 2017 @ 22:39   

    Is there a 3rd party addon that allows you to increase the volume beyond what is possible via windows/sliders?


    • CarvedInside    20 Apr 2017 @ 16:10   

      There is no addon. You can increase the volume by rising volume for each individual channel in the Mixer panel that in available in Asus Audio Center, C-Media Panel or XonarSwitch.


  12. Rich    20 Apr 2017 @ 03:55   

    Using a STX II on latest W10 update off a fresh reformat so I’ll see if there are any issues or none at all. (brand new STX II and fresh formatted to make sure) Installed 1.81 R2

    Side note sorta bummed out that on a 200 card the line-in or mic input has a HUGE amount of static or white noise or whatever, can’t even pickup the mic but have no other to try in the slot. (just going to avoid and use a USB yeti)

    Side note it may be a dumb question, when toggling settings on the control panel do they overtake the windows settings? The hz and bitrate/channels. (trying to find ideal setup for my DT 990s and what settings to change around)


    • CarvedInside    20 Apr 2017 @ 16:19   

      1) About the microphone static noise check FAQ Q&A 21. There is also the possibility that your microphone is the problem.
      2) The channels are set correctly in any audio panel. Sample rate for the card as well as for Windows only by XonarSwitch. If you set the sample rate with Asus/Cmedia panel then you need to also set it Windows Volume->Playback. For correct settings I suggest you read FAQ Q&A9.


      • Rich    21 Apr 2017 @ 07:15   

        Yeah, there’s not even my voice it’s just a BZZZZZZZZZZZZZZZZZZZZZZZZZ and doesn’t pick up any input but doesn’t matter at this point got a USB mic to avoid that. (could be EMI issues due to sitting under a 1080 Ti or other things going on in there, or my motherboard, even if it’s at the bottom slot far away as possible) But I had this issue just getting it with the official drivers too so it’s not an issue I knew that from the get go.

        For 2) Should I be switching the settings in the C-Media Panel or Xonar Audio Center also? (not sure what takes precedence or overrides) Assuming on top of being changed for Windows. Anyways thanks and really appreciate the support and drivers!


        • CarvedInside    21 Apr 2017 @ 10:29   

          1) It could also be that your STX II card microphone input is defective in which case you need to return it for warranty. Just so you know in case you would want to resolve it at some point.
          2) You only need to change the settings in one audio panel be it Asus Audio Center, C-Media Panel or XonarSwitch. Any one of those has the same effect.


  13. Submarine    21 Apr 2017 @ 09:28   

    1) How often is the audio driver(s) updated?
    2) Are you affiliated with the driver development team?
    3) Is Microsoft aware of the current Windows 10 Creators Update issues?


    • CarvedInside    21 Apr 2017 @ 10:15   

      1) See FAQ Q&A13. Up until now, newer audio drivers showed up one way or another usually at a pace of 6-12 months. I don’t think there will be many more audio driver updates from C-media for CMI8788 audio chipsets that are being used it “classic” line of Xonar cards.
      2) No. Read UNi Xonar Introduction.
      3) Don’t know, probably not. I don’t have a special line with Microsoft. ASUS does not care. It’s up to anyone that has a specific problem to report it to Microsoft and assist them in figuring a fix.


  14. xonar12    22 Apr 2017 @ 06:16   

    What would be the best version after the creator update? I keep getting buggy sounds on the R side ever since I updated…
    Using xonar essence STX.


    • Submarine    22 Apr 2017 @ 10:15   

      I haven’t had a bluescreen in 24h with continuous YouTube and VLC videos playing in the background while playing DiRT: Rally on Windows 10 Pro (x64) Creators Update, but who knows for how much longer I will get lucky, but the only way to find out is through “trail an error” by yourself and from the looks of it v1.80 rev.3 may be more stable.


      • Submarine    22 Apr 2017 @ 12:07   

        I forgot to mention the missing button(s) on the latest 1.81a r2 (think there’s a workaround for it) but I don’t have that kind of time.


  15. Zaronn    22 Apr 2017 @ 16:22   

    Hi. First, thank you for your work! I have been using your drivers for years. And now I tested the latest driver (1825 v1.81a r2) for STX II and Windows 10. And i immediately noticed reduced sound quality. Especially in the low frequency range. Almost like a low pass filter was turned on. The low frequenses seems to be there, but they are very noticable weaker compared to Asus own driver for example (which sounds best in my experience). The mid to mid/high frequenses seems to have a bit more appearance. Sound image sounds more compressed in the mid/high range. It’s wierd. I have checked every setting possible. Can’t see anything wrong or different from other drivers. And I have also noticed that others are claiming about the same thing. I also wonder why the official driver from Asus sounds best. You have any clue? And any ideas why the latest driver (1825 v1.81a r2) sounds so bad? I would think that high quality audio equipment/headphones is a must to notice the differences well though.


    • CarvedInside    23 Apr 2017 @ 15:38   

      Hi. If you were to compare UNi Xonar drivers with the same audio drivers as those in the ASUS driver you would have the same audio quality. The different sound quality with UNi Xonar v1.81a is because of 1825 audio drivers. I don’t know why those sound differently.



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