1. Darkreifan15 Feb 2017 @ 19:56

    Hey, where are the links where i can download the drivers? The official drivers won't work with my headset, saw an other post about this on an other website because the driver seems kinda buggy.


    • CarvedInside15 Feb 2017 @ 22:23

      Hi. Download links are at the bottom of the page. To jump to the download section: on the page press Ctrl+F and type downloads.


  2. Must115 Feb 2017 @ 21:37

    1) i've just installed the last UNi Xonar W10 1825 v1.81a rev.2 drivers for my STX II sound card, when i play (first) foobar 2000 v1.3.10 in KS or WASAPI output and when i open and play just AFTER a video on youtube with chrome navigator, i have no sound in youtube and the video doesn't start. is it normal ?

    2)When i launch for the first time xonar audio center from the start menu, it doesn't launch, the second time, it's ok.

    3) in Low DPC latency mode, C-media audio panel is impossible to pin to taskbar contrary to xonar audio center.


    • CarvedInside16 Feb 2017 @ 00:47

      Hi. 1) It depends. Do you have the same problem with previous drivers under the same circumstances? If yes then it's not a driver specific issue. WASAPI output in foobar2000 is sound exclusive (no other sounds are played) so that might be what is causing the issue.
      2) Normal in "Low DPC Latency" and "C-media Panel" UNi Xonar configuration. First time you launch Asus Xonar Audio center it loads to tray. No way around this.
      3) C-media panel is not a .exe file so that's why.


      • Must116 Feb 2017 @ 03:03

        thank you.


        • CarvedInside17 Feb 2017 @ 11:22

          About the issue at point 1) let me know of the result if you try with the previous drivers.


          • Must120 Feb 2017 @ 20:58

            About the issue at point 1, I tried UNi Xonar STXII 11.5 v1.80b r3 drivers, and when i play (first) foobar 2000 v1.3.10 in KS or WASAPI output and when i open and play just AFTER a video on youtube with chrome navigator, this time the videos start but without sound. With UNi Xonar W10 1825 v1.81a rev.2 drivers, the videos on youtube don't start at all. It's not a big difference 😉

            I tried UNi Xonar W10 1825 v1.81a rev.2 drivers with this time foobar in his last version 2000 v1.3.14 and this time, when i play (first) foobar 2000 v1.3.14 in WASAPI (event) output and when i open and play just AFTER a video on youtube with chrome navigator, the vidéo starts but without sound AND Foobar keep on playing the tune but without sound too.


  3. bigcid1016 Feb 2017 @ 19:20

    any progress merging the 2.14 asio drivers into the 1825 1.81a r2 set ?
    Thank you


  4. ayush17 Feb 2017 @ 10:07

    hi, i have a asus xonar dg sound card and i use it through audio optical cable on my sony 5.1 audio system... i have windows 10 64 bit on my pc .when i play i only get sound on two front speakers. when i tried to install 1825v1.81a-r2 on the pc with normal settings, driver clean and stereo upmix i get the message "driver installation failed. try restarting the pc and run the driver installation again." i have tried it for 10 times but unsuccessful always. what should i do. it would be a great help


    • CarvedInside17 Feb 2017 @ 11:18

      Is your card correctly detected by the UNi Xonar installer? Do other UNi xonar drivers work?
      Try "Possible solution 1" from this guide.


      • ayush17 Feb 2017 @ 11:54

        i tried it and it got installed.. and then i choose 6 channels, six speakers and digital output 96 khz, but the sound comes from only two front speakers. I have tried all other combinations but the sound only comes from these two speakers. other three speakers remains idle..

        and i have to enable spdif output and choose PCM because i use audio opticle cable..plz provide a solution so that i would be able to play sound on all five speakers;.previously i have used your software and sound came through all speakers..i do not remember which version i used . but now i cant ..


        • CarvedInside17 Feb 2017 @ 16:58

          I'm not sure why you say you had all speakers playing previously.
          PCM SPDIF can carry only 2 audio channels. For 5.1 SPDIF output you need Dolby Digital Live or DTS Connect encoding and the DG you have doesn't have those.
          More info about this here.


  5. Merkor19 Feb 2017 @ 08:47

    I always used your driver for my Xonar DX, which is connected with the analogue outputs to my sound system. Never had any problem.

    However, using the latest version for my Xonar DSX machine, which is connected by SPDIF, does not let me enable DTS Connect, at least it is buggy. I am using the latest version of Windows 10 with all recent updates. Switching the SPDIF modes in CMedia or Asus center does not have an immediate effect on the input display of my receiver. With the latest Asus driver for the DSX it does switch between 2 or 5 channel input, when toggling DTS Interactive. When I run the Windows for digital output and DTS in the preferences, the receiver switches to 5 channels only while the test is running. After that, the card is outputting 2 channels again. And games do not switch to 5 channels. Asus driver works flawlessly.

    I installed the low latency solution. Any help is appreciated.

    Keep up the great work! 🙂


    • CarvedInside19 Feb 2017 @ 23:39

      I think this is one of those issues related to 1825 audio drivers for which there is no fix. Just to be sure that there was no installation error you should uninstall, restart and install the v1.81a drivers again.


  6. Markcop19 Feb 2017 @ 15:16

    Hi all! It's normal that when i use the LineIn and i surf with my browser the audio goes off and i need to go on record menu, disable linein monitoring, enable mic in and monitoring, disable mic monitoring, reactivate line in and click repeatly on monitoring linein to have the audio back?
    I've tried with UNi Xonar W10 1825 v1.81a r2 and UNi Xonar 1816/1823 v1.80a r3 and the problem is always that and it appears only when i open my browser and i surf on some internet pages.
    My audiocard is a Asus Xonar DGX.
    Thanks a lot for your help.


    • CarvedInside19 Feb 2017 @ 23:53

      Hi. Those web pages have audio playback?
      To rule out that it could be a specific driver issue you should try with 1.80b, 1.75a and 1.64 drivers.
      Don't think I've seen someone else report such an issue. You're running Windows 10 which has more issue with audio playback then previous versions. You're also running a non standard audio setup. Things are complicated and I'm not sure there is something we can do about it.


      • Markcop20 Feb 2017 @ 00:59

        then...the strange thing is that this happens just in some login pages (for example in the login page of Aliexpress). When i surf on Facebook or Youtube (that have audio playback) there's not problem. I really don't know why this happen


        • CarvedInside20 Feb 2017 @ 08:16

          Which browser are you using? Does it happen with other browsers as well?


          • Markcop20 Feb 2017 @ 17:45

            Firefox 51.0.1 (64bit), but i had the problem since 49 version (when i bought the card there's that version).


    • stuart28 Feb 2017 @ 10:24

      Have just been searching for a completely unrelated issue and have to mention I see a similar thing with the login page of Aliexpress.
      My setup is basic - just a pair of speakers plugged into the front/headphone input of a D2X, and when I first go to the login, I get the audible click from the sound card hardware itself that you'd normally get when it is initialising, when the machine is powering on. No issue with sound after that and there's no repeat if I close the browser and try again straight away. Browser is latest firefox.
      Just thought I would mention it - I know that sometimes at least seeing that someone else has seen similar can help.


  7. RLacey19 Feb 2017 @ 17:35

    Hi. I couldn't find any info on this problem specifically, but I was wondering if anyone else had had this issue. On my current setup (Essence STX II, v1.80b, Windows 10 64-bit), whenever I adjust the volume in Windows it also adjusts the sound balance (so that sound gets pushed over to the right on my speaker setup); this is fine when using my speakers because I can leave the volume at 100% and adjust the speaker volume directly, but is a problem when using some headphones. I was wondering if anyone else had experienced this problem, or had any suggestions? Many thanks!


    • CarvedInside20 Feb 2017 @ 00:02

      Hi. You should try:
      1) adjusting the volume from C-media Panel and XonarSwitch.
      2) installing v1.80a and v1.81a drivers


  8. Vols and Jezuz23 Feb 2017 @ 12:23

    There's a slight bug I've found, which you may already be aware of. If so, sorry for the repeat. I searched to see if anyone else has reported this and didn't find anything.

    Whenever XonarSwitch loads a profile, it always sets the microphone balance a few ticks to the right from center. I noticed this because I was doing the basic RMAA test of looping the sound card playback through the mic input, and there was more than a dB of difference in the L/R signals. Opening the UNi control panel and hitting the ^ re-centering button on the mic fixes the issue.

    The strange part is that the mic balance always gets moved back to the right a few ticks whenever the XonarSwitch profile is changed and even when XonarSwitch starts running after a system restart. Altering and saving the profile settings with live mode on to re-center the mic with the ^ button still gives the same bug when the profile is switched. I recorded some normal talking through my headset mic and confirmed that my voice was indeed panned slightly to the right when UNi control panel shows it as being a few ticks to the right, so it's not just a GUI bug.

    Windows 7 x64, Asus Xonar Essence STX, UNi Xonar 1816/1823 v1.80a r3 (Low DPC Latency install), XonarSwitch 0.9.661. I've confirmed that the issue persists even after a full uninstall, driver cleaning, and reinstall (trying all three install options). The problem also persists with installing UNi Xonar 1816/1822 v1.75a r3. If you need any more information about my system or want me to try anything else to investigate further, let me know.

    Another quick query. I get the impression from your wording that v1.81 only supports Windows 10 because the C-Media 1825 driver itself only support Windows 10. So can we expect, moving forward, that all future C-Media driver updates (and consequently, UNi updates, I suppose) will drop support for older versions of Windows? I think I read somewhere that 1825 may fix the terrifying white noise scream of death that randomly happens. I've seen people mention that it's been a bug 'since Windows 8', but I can verify that I have that very problem with Windows 7 myself. So it would be disappointing if the only way to fix it was to upgrade to W10.

    Thanks for your time and sorry for the long post. Not sure if this is the right place or if I should've posted this on the XonarSwitch page, as I'm not sure if the problem is rooted in XonarSwitch or the UNi driver itself, or even the C-Media driver.


    • CarvedInside23 Feb 2017 @ 16:40

      For the microphone imbalance bug. I'm 99% sure it's a XonarSwitch bug. I will do some investigations on my part but you should already write a comment in the XonarSwitch page for this bug. Just so you know, I may unapprove that comment so that it will wait in moderation queue for when Giulio will resume work.

      Regarding the v1.81 query. 1825 audio drivers will only work in Windows 10. I don't know what C-media plans are but I think chances for them releasing any new drivers for Windows 7 and Windows 8.1 are slim.
      If there are fixes that I can do on my end, I will continue to release new UNi Xonar drivers based on the current audio drivers for Windows XP, Windows 7 and Windows 8.1.

      Regarding the white noise scream of death bug. This might happen for different reasons on Windows 7 and Windows 8.1 than on Windows 10. So far I've haven't seen reports that 1825 drivers fix this for Windows 10.
      I suggest you read the FAQ Q&A 18.


      • Vols and Jezuz23 Feb 2017 @ 18:28

        Thanks for the quick response. I will copy my message over to the XonarSwitch page.

        I have read that FAQ pretty thoroughly. I get it almost exclusively when skipping around on Youtube videos, and almost always am listening through my speakers in that case, so the white scream of death is more of a minor annoyance than the heart attack inducer that it can be with headphones. Just really strange. I can't remember where I saw people saying or speculating 1825 would fix it, so nevermind!

        Thanks again. Keep doin the lord's work


  9. Ithilion26 Feb 2017 @ 21:10

    Hello, I've been experiencing huge fps drops on YouTube when watching videos in 60 fps on Firefox (51.0.1 on W7 x64 Ultimate). I've been able to pin down the cause to my Xonar DGX: without any driver installed the frame drops don't happen, as soon as i install the drivers and the device is active the drops return. I've tried both Normal and C-Media configuration and previous drivers up to 1816/1822 v1.72 to no avail. Any idea?


    • Ithilion02 Mar 2017 @ 16:08

      Anyone? 🙁


    • Ithilion06 Mar 2017 @ 21:31

      Thank you for completely ignoring me while responding to other posts. It's nice of you to criticize ASUS while you yourself don't act much differently. At least do me a favor and remove my posts please.


      • CarvedInside06 Mar 2017 @ 22:25

        You've asked if someone is having any ideas, I have though about it but I have none in this regard. If I have no answer to your question, what can I say?
        The big difference between me and ASUS is that ASUS took your money in exchange of a supposedly working product and it's support. While I try my best to help people I have no obligation to fix ASUS issues and to support their cards. That being said, you are not welcomed here.


  10. mark27 Feb 2017 @ 16:05

    had crash with UNi-Xonar-1823-v1.80a-r3 and the 1825 v1.81 a rev2 drivers n Windows 10 Anniversary with DXG card when clicking on the recording tab in Windows Sounds panel.


    • CarvedInside01 Mar 2017 @ 18:36

      A system crash or application crash? Which panel configuration have you chosen when you installed the drivers?


  11. Alex01 Mar 2017 @ 08:34

    For the STX II would be more suitable the UNi-Xonar-STXII-11.5-v1.80b-r3 instead latest ones?

    But also with these I noticed random crashes or sound missing on YouTube.


    • CarvedInside01 Mar 2017 @ 18:31

      You noticed random crashes or sound missing on YouTube with v1.81a or with v1.80b drivers?

      You should use the drivers that have less issues on your system.


  12. Callum02 Mar 2017 @ 00:34

    I've had this card (Xonar DGX) for about two years now, and sometime last year booted up to find a random background static sort of noise with random subtle beeps and tones. Strangely this noise is only ever in the left channel. After rebooting having turned the PSU power off for a few minutes, the issue had seemingly fixed itself. This happened once or twice a month at most, and every time it was after I had switched back to Windows from my Linux (Debian) dual boot. Note this background noise was present even when the volume setting was at 0%, 100% or completely muted, never present over PCM however. After messing around for a while I noticed that the pitch and sort of the consistency of this noise was linked to the activity of the GPU, while this sounds like EMI, I'm sure there's more to it as at this stage it wasn't permanent.

    However more recently, I reinstalled Windows 10 and decided to setup two of my HDDs in RAID 0 using my motherboard's RAID controller. From what I can gather based on observing the boot process this is done by pre-loading some software the provides the RAID functionality. I'm sure that this is affecting the way the soundcard is being initialised in the same way that rebooting directly into Windows from my Linux dual boot used to.

    I don't know if this immediately brings anything to mind, but I'm happy to try any suggestions people may have.

    Thanks 🙂


    • CarvedInside02 Mar 2017 @ 04:45

      Take a look at FAQ Q&A 21 if haven't already.


      • Callum02 Mar 2017 @ 18:04

        I'll try the front panel over the next day or so if I end up messing around with the card again. I usually connect my headphones to the rear headphone jack as the FAQ suggests.

        Something to note however, a few of my friends have this same card and I've borrowed one that hasn't been used much and hasn't been in use for maybe a year. This card is completely fine, no artifacts in the audio at all, while being attached to the original slot I used which is closer to the GPU. So I doubt this is just EMI, the sound is very consistently linked to GPU activity so much so that I can actually hear a regular repeated tone in the sound when playing films in VLC, probably when each frame is being pushed. One of my other friends had this issue also, after having a game crash and cause an audio loop. For him, reinstalling the drivers fixed the issue for some a while, but he's mentioned having problems with it again since.

        The most likely conclusion being that my card is defective in some way. I'm still trying to work out how reinstalling the drivers or 'leaving it for a while' could fix a hardware defect. If I have any issues with the new card I'll follow this up but for now it probably isn't worth wasting any time on.

        Thanks for the quick reply.

        P.S. Some details that could be useful:
        - Soundcard: Xonar DGX
        - OS: Windows 10 (64-bit)
        - MB and CPU: Asus Maximus VII Hero with Intel i7 4790k
        - Driver: "UNi Xonar W10 1825 v1.81a r2" and previously "UNi Xonar 1816/1822 v1.75a r3"
        - Interfering GPU: NVIDIA GTX 780


    • bigcid1003 Mar 2017 @ 02:57

      try this:
      turn up the volume hi enough that you can hear the buzzing from your speakers easily
      then ,take you side cover off of you case
      get a long (optional) screwdriver and loosen the screws(slowly)on the L bracket on your sound card
      list for a change in the sound level or frequency to see if it goes away
      if it changes or goes away ,it's a ground loop caused by your case

      I had that problem and wound up changing .Power Supply,videocard,cables,receiver
      turns out ,it was the PC case


  13. Vols and Jezuz02 Mar 2017 @ 23:52

    Hi, I just upgraded to the STX II, and strangely, the v1.80a r3 flavor installs (Low DPC Latency option) and runs perfectly without being in Test Mode/“Disable Driver Signature Enforcement”. Furthermore, v1.80b r3 will not install properly, though I haven't tried Test Mode/“Disable Driver Signature Enforcement”. The uNI installer says that I failed to click "Install" on a pop-up dialog, which I think is flashing on the screen for a split-second but disappears before I can click it, right before it attempts unsuccessfully to install the alternate driver. In Device Manager, it says: "The name is already in use as either a service name or a service display name." Neither of the possible solutions for driver installation failure work either for v1.80b r3.

    I guess it's not a problem since v1.80a r3 is working fine for me...? Is there even a potential difference in the sound between the two versions, or is it more of just a clerical matter with Windows and driver files/procedures? It's strange to me because it's the reverse of the behavior you state in the release notes.

    Another question... Is there any performance difference, as far as the Windows audio stack is concerned, when the playback and recording devices are set to the same format versus being set to different formats. I.e., if I'm using 24-bit, 44,100Hz playback, would matching that for my microphone be better for the Windows audio stack so that it is dealing with only one format; or, would using non-matching 16-bit, 44,100Hz for my microphone be better performance, since the lower quality format is less demanding? I guess it boils down to how independently the Windows audio stack handles playback and recording. If they are entirely separate processes, similar to how DACs and ADCs handle input and output completely independent, then I would expect the second case to be true.

    One last question, do you know of a way to disable/enable recording devices automatically when you switch profiles in XonarSwitch? I'm looking for it and can't find anything, but I may just be stupid. I know you can mute the volume when switching but I'm looking to disable/enable my mic like you would do in the Windows sound control panel. Thanks for all your wonderful work and help!

    System info: Windows 7 x64, XonarSwitch 0.9.661


    • CarvedInside03 Mar 2017 @ 05:34

      1) Do you still have the old STX card in the same system?
      Is your STXII card properly detected as a STXII card in the UNi Xonar installer?
      Just to be sure, check the device id against this one: PCI\VEN_13F6&DEV_8788&SUBSYS_85F41043
      To do so, go into Device Manager, show the properties page of the device, go to the "Details" tab, and select the property "Hardware IDs".

      That popup with install, it does automatically select Install so that's not the issue.

      There are Windows 7 installs that have "Disable Driver Signature Enforcement" always running. Not sure what triggers that.
      There are also situations when a particular driver refuses to install even if that version was previously installed, this happened to me on Windows 10 and v1.80a drivers. Don't know a fix for this situation.

      Speaking of audio quality between 1.80a and 1.80b, here you have the RMAA reports between v1.80a and v1.80b. I don't think there is a distinguishable difference.

      2) I think it does not matter if the microphone is set to a different bit depth and I also think that setting it to 24 bit has a negligible effect on CPU performance.

      3) Don't think there is such an option or possibility.


      • Vols and Jezuz03 Mar 2017 @ 12:57

        I still have my old STX card, but not in the system of course. I broke it by pulling a copper trace when desoldering a SMD component, but I thought of a way to fix it today.
        But yes, UNi installer properly detected it as STXII and the hardware ID matches the one you provided.
        The only noticeable difference I see in the RMAA report is that v1.80a has a slightly sharper low-pass roll-off, but it doesn't matter either way really because I can't hear above ~18kHz.
        If the RMAA reports are just from looping the output through the line in, then they are of somewhat limited use for evaluating the output, because the line-in components aren't as high grade as the output components. The isolated output should instead be compared versus a high-quality reference.
        Thanks for the other answers. It sounds like I should be fine with v1.80a on the STX II and I should just ignore that the installer compatibility was reverse of the typical behavior.


  14. NedStar03 Mar 2017 @ 02:20

    Hey there,

    I'm using an xonar xense soundcard. I always used to be able to use MIC BOOST, but the option has disappeared after I made the jump from win 8.1 to win10.
    The option however is there for the "front mic" option.

    I'm currently using the UNi Xonar 1822 v1.75a r3 drivers, I've also tried their old official Xense_8_12_8_1795_Win8 drivers and your UNi Xonar W10 1825 v1.81a rev.2. The boost option on regular mic is complete gone.

    Any clue as to what I could do to try and get it back the way it was?


  15. Michal04 Mar 2017 @ 22:31

    I have asus xonar DS (PCI) and I'am having hard times to make it work with my creative 5.1 speakers (analog). I get no sound from rear and center/woofer speakers.
    My set:
    windows 7 32-bit
    Mainboard ga8i865gme 775 rh

    Even during sound test. I tried almost everything :
    Disabled sound on mainboard
    Reinstalling drivers (original and Unixonar - different versions)
    Playing around with changing number of channels, ratio, sound effect (when i choos sound effect I hear rear and center sound test only in front left and front right simultaneously)
    Checked speakers - they work properly with sound blaster live card that I have (PCI).
    Checked od Linux system (Ubuntu) with alsa - same result
    Tried to disable DTS totally in playback devices - no result
    Changed PCI slot
    Checked the presence of voltages on board 3.3, 12, -12, 5 - all present on PCI and card
    Checked hardware on soundcard (partially) : caps ok, output mosfets ok

    Am I missing something? Is this card actually suppose to play analog output or not (obsolete outputs?) because it is hard to find anything about this card on internet (detail information about outputs, schematics etc). There is a manual which shows how to connect speakers to play analog 5.1 so I'm guessing it should work by design with analog speakers...
    Is it normal that spdif light is constantly being lit even if I am not using this output (it turns on instantly during boot)? Is it possible that PCI 2.2 is so essential that my Mainboard is not compatible (probably it has 2.1 PCI slots)? What other thing could go wrong in hardware or software?

    Thanks in advance for any help, materials, schematics. I'm running out of ideas. (Maybe connecting it offline and change settings of DAC register would fix this?)


    • CarvedInside05 Mar 2017 @ 00:32

      My guess is that you have a defective card.
      SPDIF light always being on is normal, kind of a bug on Windows Vista and newer but all cards do that.



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