1. TSA13 Sep 2019 @ 12:48

    [comment moved to XonarSwitch page]


    • CarvedInside13 Sep 2019 @ 15:16

      Please remake this comment under XonarSwitch page. Also mention Windows 10 version and build number, your audio card, which Xonar drivers do you have installed, if XonarSwitch does not launch at all, if you get an error message.


      • TSA14 Sep 2019 @ 13:12

        Isn't comment section locked there? I didn't try to post, but it said so in the top message...


        • CarvedInside15 Sep 2019 @ 02:38

          It wasn't actually locked, but yeah the original message above said that I would not approve any new messages. So it's perfectly fine that you've read that and posted initially here.


  2. Taranis14 Sep 2019 @ 02:34

    Is there any way to run two different audio sources simultaneously on Rear Headphone Out and SPDIF on an Essence STX II?
    Running the Headphone as System default playback device and SPDIF Out through an Amplifier via Media Player Classic (or Foobar, or any media player). I prefer to do something else very often while the family is watching something else.

    Right now, If I use SPDIF with Dolby Digital Live, it kills the Headphone Out. If I use SPDIF with PCM, both outputs are sounding the same 2.0 channels.
    Previously had an Auzentech Bravura, which was capable to do this. (Basically its drivers were handling the headhpone jack as an individual output).

    Adding to the problem, I need 2.0 out headphone and 5.1/7.1 DDL on SPDIF.


    • Taranis14 Sep 2019 @ 14:08

      So in short, why comes the Headphone Out disabled (greyed out) if the SPDIF DDL becomes enabled?


    • CarvedInside17 Sep 2019 @ 01:58

      I don't know of a way to change the driver behavior to keep rear headphones output enabled when enabling cards S/PDIF Dolby Digital Live.

      You could use the headphone with the onboard sound card, or if the onboard card has DDL or DTS encoding use that and use the Xonar card with the headphones.
      A trickier solution would be to make the video player encode the audio to Dolby Digital Live or DTS. I've described this here.


      • Taranis17 Sep 2019 @ 02:32

        The only reason for me to buy the Essence STX card to use it with headphones, because of its decent audio quality (and Win10 drivers, which Bravura does not have). Nobody ever asked the question why on earth the headphone output disabled on a primarily "made for this" card with SPDIF in use? Weird to me...Pretty much zero relation should be between an analog and a digital/optical output.
        So then I have to sell the card. 🙁

        Thanks for the answer Carved. BTW, I do use the AC3Filter 😉 and no, the onboard Realtek does not even have an optical out.


        • CarvedInside17 Sep 2019 @ 05:10

          You said you use the AC3Filter, but it's unclear to me if you've configured the AC3Filter to encode the audio to 5.1 AC3 or DTS and use Xonar's "S/PDIF Pass-through Device" as output.


          • Taranis18 Sep 2019 @ 02:57

            I need to use 2 separate audio output, but the STX (neither the ASUS driver or UNi) is clearly not capable to do it the way I need them.

            I doesn't really matter how it is configured.

            Got a 4.1 speaker setup with an Onkyo Amp. The AC3Filter is setup to provide 4.1/upmix Stereo, the Bravura is also setup, to upmix if needed via DTS:Neo) and while I'm playing on a headphone as a default playback device, something else (either 5.1 source or upmixed DTS) is ongoing through SPDIF. The media players in use are setup to push audio through SPDIF.

            Unfortunately the STX is either pushing the same audio on both headphone and SPDIF, or if DDL enabled, I got upmixed SPDIF only with a dead headphone out.


            • CarvedInside19 Sep 2019 @ 01:24

              Was S/PDIF output enabled in the Xonar control panel? Because that could overwrite the S/PDIF Pass-through output with the one from the analog headphones.


              • Taranis19 Sep 2019 @ 23:26

                I'm not sure how do you mean this. There is only one tick box to enable SPDIF on control panel (under the Analog Out selector). If it is not ticked, I got no Audio on SPDIF. If its enabled, I hear the same audio on the headphone and on the Amplifier with SPDIF PCM (2.0) format... Which makes no sense to me (it seems the sound card directly routes the Analog Out towards the SPDIF and plays the same audio on both and ignoring the Windows Playback Devices).


                • CarvedInside20 Sep 2019 @ 01:06

                  If you go and right click on Windows Volume->Sounds->Playback, you will have there a separate output device called "S/PDIF Pass-through Device". Using this as output is different from enabling S/PDIF in Xonar's control panel, which copies the analog out to S/PDIF and does not have it's own output device. Whereas, the "S/PDIF Pass-through Device" is a separate device which has it's own independent sound output.
                  Try this: disable (uncheck) the S/PIDF in the Xonar control panel, play some music over analog output, go to Windows Volume->Sounds->Playback->"S/PDIF Pass-through Device"->Proprieties->Supported Formats tab-> test the encoded formats. Do you hear any of those tests on the S/PDIF receiver?


                  • Taranis22 Sep 2019 @ 21:13

                    Put the card back for testing last time.
                    No audio (no 2.0, no DTS, nothing) on SPDIF Pass-through Device unless the SPDIF tickbox ticked under headphones. At device properties none of the tests are making any noise.


                    • CarvedInside22 Sep 2019 @ 21:51

                      Just a clarification, did the tests on the "SPDIF Pass-through Device" worked when you've enabled the S/PIDF in the Xonar's control panel?
                      I don't think I have anything else you could try.

                    • Taranis23 Sep 2019 @ 21:55

                      Yes, used the SPDIF Pass-through Device as default playback device, which only feeds any audio towards the Amplifier if the SPDIF tickbox in software is enabled. On one side, it seems logical. If tickbox enabled, SPDIF works. But nonsense to have any effect on Headphones.

  3. Branddy24 Sep 2019 @ 10:24

    Hello There,

    I have the same behavior as Taranis under Win10 when using the essence II STX 7.1 S/PDIF output as default sound device, with the tickbox enabled in the Xonar control panel.
    => When using Winamp with ASIO output. (Same as Foobar2000)
    => No problem with WASAPI.
    If I use The DTS/AC3/etc. Passthrough output, in video players, then the headphones stay muted. only A/V receiver plays sounds, same when using DirectSound.


  4. Sebastian24 Sep 2019 @ 12:45

    What i want: Key Shifting / pitching output from 440Hz down to 432Hz
    1. Does this driver supports that - the one from Asus only pitches by 1 semitone (e.g. 440Hz to 115Hz)
    2. Is this Uni Xonar driver open source? I would like to try programming it by myself x-)


    • CarvedInside24 Sep 2019 @ 23:58

      1. No. It works exactly as with ASUS original driver in this regard.
      2. These are modded drivers of the original drivers. I don't have the source code for the audio driver.


  5. Sebir8624 Sep 2019 @ 17:09

    System sounds do not work on Windows 10 1903. Do you have any advice?


    • CarvedInside25 Sep 2019 @ 04:05

      Did this started happening recently?
      Check the solutions presented here.


      • Sebir8625 Sep 2019 @ 20:25

        CarvedInside your link helped me thx 🙂


        • CarvedInside25 Sep 2019 @ 20:29

          Your comment above was written as a new comment instead of a reply to the discussion and I moved it. When replying to an existing discussion use the "Reply" button floating on the right of the comment you are replying to.

          Which solution worked?


          • Sebir8625 Sep 2019 @ 22:24

            Poznaj wymowę
            I am sorry for my mistake. An application has turned off or muted system sounds that had to be turned back on. On earlier versions of win10 this was not the case.
            Thank you again 🙂


  6. Robert25 Sep 2019 @ 20:51

    Thanks so much for that help and download. It took me 2 days to find this page and solve the problem.


  7. Ajinta26 Sep 2019 @ 18:02

    I am using an Asus Xonar D2X soundcard and for 6 years it worked perfectly until this Sunday. I disconnected my pc and removed expension cards from it as I replaced collant inside my waterloop.
    I than plugged everthing back and now the sound card doesn’t output any sound at all trough SPDIF connector. I am using it for years connected to my receiver for DTS 5.1 upmixing and I also use a single 3.5mm stereo jack for my headphones. I am also using UNI xonar drivers.
    I changed nothing in my system only removed the card out for maintenance and than it vent back in…no software was changed…I put it in the same slot(later I tried other ones too) I did plug in its molex power.
    I must say card is working fine outputting sound to my headphones over its analog jack. What aint working is spdif. In windows it says it is plying sound but my receiver doesn’t get any signal. There should be red light inside the optical connector and on the end of plugged toslink cable but there aint nothing.
    It bugs me couse only digital aint working but that is also main reason for me to have sound card for my 5.1 system.
    Is there any possible solution to “wake up” the spdif to work, or is it physicly broken and I need to get another sound card?

    Best wishes Primož Osolnik


    • CarvedInside27 Sep 2019 @ 19:24

      Hello. I think that probably some component on the card became unsoldered or was damaged (from electrostatic discharge for example). Maybe you can find a person or a repair shop that repairs electronics that can fix it.


  8. Dominic27 Sep 2019 @ 15:29

    Not sure is it best place for this kind of question.
    I have Xonar DX and Win 10 ver 1903 (18362.356), with latest update.
    Which unixonar drivers are "the best" for this card atm? I'm gonna use it only to pair them with my Arctis 7 via aux cable (sound card->aux->wirleless trasmitter->headphones), to get better sound than using SSE3. I have usb mic so only drivers to get best sound for headphones. Cheers.


    • CarvedInside27 Sep 2019 @ 19:13

      This is the right place. All drivers have same audio quality. If you don't know which one to go with, try with the v1.80a.

      Since you are concerned with sound quality, I don't know if you get anything from the DX with your wireless headphones. With a dedicated sound card or DAC you want to use the analog output and that output not be converted to digital. The problem in your case is how the transmitter sends the audio signal, if it's sent as an analog signal then this is good. But if it's converted from analog to digital by the transmitter and the headphones have their own DAC(digital-to-analog converter) which converts it back to analog this would be bad and you won't see an improvement in sound quality by using the Xonar DX, it actually might be worse because of that analog to digital conversion. In the time I allocated to research this I could not find an answer to which kind of transmission it is. Maybe you find the answer by researching more, by contacting steelseries support or by A/B testing the headphones between USB and analog connections.


  9. Charlie03 Oct 2019 @ 19:18

    Win10 Pro 8GB, Xonar DX. Throughout 2018-2019, I've alternated between Asus' driver, Uni 1.71, 1.75 and 1.80, as each Win10 revision seemed to introduce a new series of crashes, mostly IRQL but sometimes Memory Management, especially but not exclusively when awakening from sleep or sometimes powering down. Before I claim that 1.71 did not resolve the wake-up issue, could it be that a complete uninstall and reinstall of any of the above drivers (rather than changing them) accomplishes something, whenever Windows 10 moves to a new release? Does it matter whether uninstalling via Device Manager vs. the Asus download vs. ??


    • CarvedInside04 Oct 2019 @ 22:50

      Especially if you have problems you should uninstall the drivers before installing the same or other versions. Uninstall them from the control panel and restart. When installing check "Run driver cleaning before install" in the UNi Xonar installer. Try with "Low DPC Latency" and "C-Media Panel" configurations if you haven't.
      Are you having those problems only if you install the Xonar drivers? Which motherboard do you have?


      • Charlie06 Oct 2019 @ 09:24

        cmudaxp.sys is consistently the identified problem file.
        Dell 0D441T.
        Most recently, after using Device Manager in admin mode to uninstall the Uni 1.71 driver, I downloaded the Asus 1823 driver (again). I had to run the setup program twice -- the first time, it offered only to Uninstall (which I allowed), and (following a reboot) the second time, it proceeded to install the Asus driver. Things have been stable so far; I assume that the Asus installer had good reason to perform an uninstall even though I had supposedly done that already.
        By the way, I am not a gamer. The only demand I place on my sound card is Cakewalk, but I've not experienced crashes while using that program.


        • CarvedInside07 Oct 2019 @ 05:52

          Why didn't you use the uninstaller(s) from Control Panel-> "Programs and Features"? You may have had 2 entries there, one from the ASUS Xonar and one from UNi Xonar drivers. That would explain why when you ran the ASUS driver installer it showed the "Uninstall" page.
          Anyway, if you run into problems again, first test the system without the drivers installed because memory issues will also cause drivers to fail.


          • Charlie13 Oct 2019 @ 22:46

            I did not know that your advice to "uninstall them from the control panel" means Control Panel > Programs, not Control Panel > Device Manager. But now I know.
            I still have two programs listed in Control Panel Programs: Asus Xonar DX Audio and Uni Xonar Audio driver.
            Most importantly, though, no crashes so far!


  10. Joseph06 Oct 2019 @ 04:26

    Win10Pro - Version 10.0.18362 Build 18362
    Xonar Essence STX , Driver UNi-Xonar-W10-1825-v1.81a-r2
    Google Chrome Version 77.0.3865.90

    Surfing Youtube using chrome, suddenly sound cracking after that high pitch sound came out from speaker (lucky didn't use headphone,otherwise eardrum is gone ), need to perform PC restart, it happens second times within this month ( randomly )


    • CarvedInside06 Oct 2019 @ 04:53

      Check FAQ Q&A18.
      Before your current Windows 10 version, you had a previous Windows 10 version or you had Windows 7 or Windows 8? Did you had this issue then or it only started with current version?


      • Joseph06 Oct 2019 @ 06:20

        Yes, start from this month, version remain 1903, i check updated history.
        Last update is cumulative Window 10 version next (10.0.18362.10022) (KB4508451)


  11. DerMal07 Oct 2019 @ 01:36

    Hello ! I really appreciate all your hard work , but none of these drivers worked on a clean install
    of Windows 8.0 (RTM) Box version . The same case here , in full details, just like mine :


    • CarvedInside07 Oct 2019 @ 06:07

      You've replied to someone else's comment instead of posting a new comment. I corrected that. To post a new comment you need to use the comment form at the bottom of the comment section. To post a reply to someone else's comment you use the Reply button floating on the right of that comment.

      Does the UNi Xonar installer detect the card?
      Have you tried to manually installing the drivers like I described here at Possible Solution 1? Try that and also Possible Solution 2 from the same page.


  12. Matteo07 Oct 2019 @ 22:02


    the drivers are better than the official one, but the card doesn't sound like i remember on windows 7... are there some settings that could improve the quality?

    i tried to play with the equalizer (listening music) but i miss something in the sound.

    keep up the good work

    Thank you



    • CarvedInside08 Oct 2019 @ 22:45

      Check Xonar best settings guide and check "Disable Listen to this device and Microphone and Line In Monitoring" section from this page. You could also try with different driver versions.
      Tell me your card and which driver version you have installed.


      • Matteo09 Oct 2019 @ 10:27


        Thanks for the reply!!

        my card is a Xonar D2X drivers are UNi Xonar W10 1825 v1.81a r2 .

        i'm trying c-media panel for settings. i will try your suggestion this evening. very much appreciated, if you have other suggestion pls tell me, i don't want to buy a new audio card 🙂



  13. Tony09 Oct 2019 @ 21:42

    Before version 1903 OS Build 18362.418 both speakers and mic were working perfectly running on UNi-Xonar-W10-1825-v1.81a-r2. But couple of weeks back when I updated to 1903 build 18362.418, my headset mic stopped working and when I checked Listen to device/Monitory, I get double sound signals. Apparently if I checked Listen to device/Monitoring, whatever I am listening be it from games, music or movies, I get double sounds, very echoy.

    What I tried to do was uninstall the driver, restarted and installed the stable version UNi-Xonar-1823-v1.80a-r3 and now I have no sound coming out at all and the I believe is not working at all too. Tried to re-sit my soundcard and reinstall the drivers but didnt work.

    Card is Xonar Essence ST (not STX version)


    • CarvedInside10 Oct 2019 @ 18:38

      1. If you go to Device Manager (can open it by it's name in search), is the card detected under "Sound"? What is the status of the Xonar card (working, missing,etc.)?

      If the card is properly detected and working, do the following:
      2. When playing audio, if you go to Windows Sound (right-click on Windows Volume tray icon-> Sounds or if missing type in Windows search: "change system sounds"), go to Playback, for the Speakers (ASUS Xonar...), do the volume meter shows activity?
      3. If you right click on Windows Volume->Open Volume Mixer-> check if "mute" is active for any of the entries.


  14. Nekomaru210 Oct 2019 @ 15:35

    What type of driver is necessary to me? I have Windows10, version 1903, and OS-Build 18362.418. Fortunately my personal computer is in a test mode. I want one whose digital signature works properly.


  15. Nashia11 Oct 2019 @ 00:14

    Windows 10 Pro 1903 ver, build 18362.418.
    I5 6600
    mobo: ASUS h110m-d with 8GBs of RAM
    sound card: AIM SC8000 (CM8787)
    I can install drivers without any problems, but i have no sound no matter what I do. I tried installing various versions of drivers, tried installing drivers with “Disable driver signature enforcement” option with no effects. I get sound on Windows 7, but not on Win 10 :(. Is there a solution?
    Also I aprecciate your hard work!



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