1. tamura12 May 2016 @ 21:05

    How to use 2 soundcard . I have asus stx and hdav 1.3 . sry my english is bad


    • CarvedInside13 May 2016 @ 02:17

      You can control one at a time by disabling the other in Device Manager and launching the audio panel again.


  2. Alex17 May 2016 @ 02:18

    so i am having this issue of which i hear more in my left headphone and less in my right. it happened after plugging in my swan hi-fi speakers which i used a 2 cable to 1 converter to connect into the headhone jack and then set it to 2 speakers.

    after i went back to headphones my right ear was always cut off. ive tried everything but i dont want to do the only thing i know that would fix it which is reformatting. i sent the card in they said they tried everything the card is fine.

    i will pay an amount for a fix if you do that kind of thing. im 99% sure it has to do with windows drivers and nothing to do with the sound card or the drivers so if you can help please contact me


    • CarvedInside20 May 2016 @ 01:24

      Uninstall the Xonar drivers and install them again. Check the cable and audio system with another device.


      • Alex20 May 2016 @ 01:51

        ive done all of the above ive sent the card in it works fine but the only way i could fix this currently is if i reformatted so im trying to avoid that. like i said it has to do with something on windows maybe it was from putting 2 speakers into the headphone jack which used a y cable 2 to 1 and now its reading something like as if it were stuck


    • Azulath30 May 2016 @ 20:48

      I have a similar issue (since switching to Windows 10). I am unable to regulate my right headphone speaker - it is always at maximum volume. When I change the general volume - to let's say 10% - the left speaker is becomes quieter, but the right one stays the same. At 100% generall volume the right one is still slightly louder than the left one. When I try to adjust the balance it only works for the volume I have set at the moment, this means I would have to adjust the balance every time I change my volume.
      I was able to temporarily solve the problem by uninstalling the Xonar drivers, installing UNi Xonar 1816/1822 v1.75a r2 and removing
      one of the two HsMsgr processes from the autostart list. (Both - the 32bit and the 64biti process are run at startup by default).

      However, a couple of weeks later (today) I had the same issue again, without updating any drivers (Windos updates were installed - so they might have been the culprit). I was not able to get my headphones working properly by reinstalling the driver, so I decided to give the default ASUS drivers a try and it seemed to work for a while. (A reason could be that I uninstalled the drivers provided here in a more clean way, meaning that I uninstalled them, restarted my system and then installed the ASUS drivers. When installing the drivers provided here I did not manually remove the old ones since they seem to do that automatically).

      Later in the afternoon I had almost the same issue. This time however, I was not able to regulate the left speaker. Simply restarting solved this issue (for now).

      P.S.: I checked my headphones and the work fine everywhere else

      Headphones: Beyerdynamics DT 770 80Ohm
      Soundcard: ASUS Xonar DX


      • Alex30 May 2016 @ 23:51

        i think a reformat would fix it but i have so many tiny files on my pc right now and im in not such a rush. tell me if you find a fix


  3. Simon18 May 2016 @ 03:48

    Hi - I stumbled across this fantastic site and the drivers this evening while trying to get my Asus Xonar STX card working. First off, thanks to everyone who has contributed to the drivers and the site - a fantastic resource! All I want to do is output via SPDIF to my Denon receiver and at the same time output to the left and right RCA jacks which are connected to my analog whole house amplifier. Before I upgraded to Windows 10 (I was on Win 8) this worked fine but the upgrade to Win 10 messed it up and I was only able to output to SPDIF.

    I have since uninstalled the Asus drivers and installed the latest Uni driver using default settings. I can now output to the RCA analog outputs but I can't get SPDIF to work. Here are the settings I'm using in the the Windows Sounds settings and the Asus utility: http://postimg.org/image/z43y72bup/ Any ideas what I might try next to get this all working?

    Any suggestions greatly appreciated.



    • Simon19 May 2016 @ 07:21

      OK, so I've managed to get the S/PDIF output working but I can't get the analogue speaker outputs working concurrently with the S/PDIF. In fact, now I can't seem to get any output from the STX speaker outputs 🙁


    • CarvedInside20 May 2016 @ 01:22

      Hi. The issue you are having might be because of a bug within Windows 10 or the current drivers and Windows 10 but I don't know if that's the case and have no way to test this.
      I think the correct settings would be to set the "Speakers (Asus Xonar STX audio device)" as default device in Windows->Sound and enable S/PDIF Out-> PCM in Asus Audio Center.
      You should check different UNi Xonar driver versions to rule out the issue being with a specific driver.
      Hope this helps.


  4. Tom21 May 2016 @ 10:22

    Will there be anymore update on the drivers?


    • CarvedInside24 May 2016 @ 08:45

      Check the FAQ Q&A 13. Asus/C-Media may not be releasing new drivers anymore but I will continue to look for improvements or fixes that I can do on my end.


  5. Wolfsrabe26 May 2016 @ 21:17

    Great work, guys! My a few years old STX works great on W7 and also on W10.

    My question: Is it possible to get the driver only for integrate / slipstream in a Windows-Install-DVD, i.e. with the program "NTLite" ?


    • CarvedInside27 May 2016 @ 03:26

      Thanks. You can get the driver only files from here (see below "Possible Solution 1"). Drivers installed this way will lack proper settings (sample rate would be set to 96kHz, rear and center speakers delay would be turned on, etc.) so I would recommend that you always install the UNi Xonar driver package after installing Windows.
      Update: You can automate the UNi Xonar driver setup by keeping the "installsettings.ini" file that's generated after a valid UNi Xonar installation in the same folder as the UNi Xonar driver executable and running the .exe with the "/silent" flag like: "UNi Xonar 1823 v1.80a r3.exe" /silent


  6. Sillor27 May 2016 @ 15:46

    Hi! I have a specific problem with your driver. So, after istalling that my Sylenth synth doesnt want to work. Reinstalling driver or reinstalling Sylenth have no effect. But if i delete driver and then run Sylenth with stock ASUS driver or on stock Realtek sound card it works perfectly. Can you advice something to me, please?


    • CarvedInside28 May 2016 @ 02:37

      Hi. Tell me your OS, Xonar card and UNi Xonar drivers that you've tried.
      You could try with a different UNi Xonar driver version, maybe with the same audio driver version like the ASUS drivers you've tried. The audio driver version is something like 1815,1818 or 1822.


  7. Melwax03 Jun 2016 @ 20:17

    hi,i have a xonar dgx 5.1 and when i try to install your 1.80 driver my pc freeze al the time.
    can you help me pls?


    • CarvedInside03 Jun 2016 @ 21:16

      Hi. By freeze you mean your PC is unresponsive, CTRL+ALT+DEL does not work and you have to reset the PC? Which OS do you have? Have you tried installing v1.75a, if you haven't try with 1.75a and report back if it freezes or not.


  8. Chris04 Jun 2016 @ 06:08

    Couldn't find in on this and just want to make sure I don't ruin my headphones. I have a Sennheiser HD 558 that has 50 ohms of impedance, is it safe to put it in Pro gaming amp mode?


    • CarvedInside04 Jun 2016 @ 19:35

      As it's described by the option full name "Pro-gaming Mode or for 32~64ohms headsets" the Pro-gaming Mode is for headphones between 32-64ohm, so yes it is safe.


  9. Zephyr05 Jun 2016 @ 11:59


    I bought a xonar dgx more than a year ago now,everything has been working fine besides that when I increase my volume to high,I keep hearing a buzzing noise...
    I uploaded a file in case anyone wishes to hear it https://www.mediafire.com/?wvg3ww29asqjv63

    Could it be because my sound card is too close from my gpu and thus creating interference?
    If that is the case I don't know how to fix this...I think I only have one Pcie slot 🙁


    • CarvedInside07 Jun 2016 @ 09:35

      Hi. In the recording you've attached it's to hard to hear any sounds.
      The buzzing noise could be because of EMI(Electromagnetic interference). You could try solving this by making a EMI shield for your Xonar card.
      You could also look into connecting your PC to a grounded electric outlet.


      • Zephyr07 Jun 2016 @ 14:12

        Thank you for your answer,
        I will try to do that regarding the EMI shield
        as for the sound file,yes I was afraid of that it can only be heard at high volume with headphones,I'm also using the pro-gaming mode but I believe my headphones can handle it.


  10. digitalfrost08 Jun 2016 @ 21:41

    I have a strange issue. I'm so fed up with it I'll probably just change sound cards and hope that fixes it. Just wondering if anybody has any ideas, so here we go:

    - I randomly get static to the speakers at full scale, no matter the volume setting in windows
    - This only happens when I'm listening to music with foobar2000
    - It happens rarely, it can not happen for weeks and then multiple times a week
    - It happens after track changes, either automatic or manual
    - Playing the same songs again in the same order doesn't trigger it
    - It goes away if I change the track

    I think there is a strange thing going on with fb2k and my sound card. I'm using an Asus Xonar DX. I have flashed the 1.1 PLX firmware and I tried to use the Unixonar 1.80 r3 as well as latest Asus drivers (DX_8_1_8_1822_Win8_1_Beta). fb2k is v1.3.10 and I'm using only the SoX resampler and foo_dsp_ambio. The latter is a late addition, the bug also happened without it. I resample everything to 48khz and that is the native sampling rate of my card, as well as in the windows sound settings (24bit/48khz). I manage the card with XonarSwitch.

    It's really great if it's 1am and you're listening to some music while lying in bed, and then BOOM. I'm using a power amplifier, so windows is my only means of volume control. VU meters show the power output at 10W which should be around 91dBA with my speakers.


    • CarvedInside08 Jun 2016 @ 23:16

      FYI I have the Xonar DX and I don't have the issue. I've seen other people reporting some similar issues. In the majority of cases with such issues I think it's some sort of motherboard and Xonar card incompatibility (some started having problems after motherboard change).
      You should look into updating the motherboard bios, trying a different audio player (my suggestion AIMP with WASAPI output device), setting sample rate to 44.1kHz and checking with the onboard audio card to know if it's a not some software issue unrelated to the Xonar card.

      I don't know if 48kHz is the native sampling rate of the card but I know that the claim that the card produces better results on 48kHz is false. You can read more about it here. It's probably unlikely that the 48kHz sample rate is the cause of the static loud volume but you should check with 44.1kHz.

      Tell us your motherboard, OS and the output device set in foobar2000.


      • digitalfrost10 Jun 2016 @ 01:20

        Thanks for the reply. I use an Asus P8Z68 Rev 1 board, I run the 3603 bios which is the newest available (from 2012). OS is Windows 8.1 64bit and I use the DirectSound Default Device in fb2k.

        I'm actually running at 48khz since that is the default sampling rate for most modern games and video formats, plus most of my music is in 24bit/96khz which makes 48khz easy to downsample to.


        • CarvedInside10 Jun 2016 @ 15:33

          I was betting you had a ASUS motherboard as ASUS motherboards have the most issues with Xonar cards. Here is another report with loud static noise but appears under different circumstances.


          • digitalfrost10 Jun 2016 @ 17:20

            The problems described in the link fit exactly. I also have the issue with the right channel giving out, but a reboot fixes it for me. Oh well, time for another sound card. Thanks for your help.


          • mzso12 Jun 2016 @ 16:29

            That's ironic. It works worst with their own boards...


            • justtesting27 Jul 2016 @ 01:56

              Has anyone checked if the banshee scream of death is cured under latest W10 RS1? Thanks.


  11. Isaac13 Jun 2016 @ 22:54

    I have a problem with my soundcard Asus Essence STX II !
    when i start a video on youtube or a song on soundcloud, sometimes i get a really LOUD screeching noise occuring randomly !!!
    this problem can appear any time, I am afraid enough of damaged my ears
    can you fix this issues ? in the next UNi Drivers ?
    I meet this bug since I sold my Xonar DS for the Essence STX II on Windows 10 x64
    I find that afflicting after having paid as much for such a top-of-the-range product :'(


    • CarvedInside13 Jun 2016 @ 23:42

      I haven't found a solution for this problem. Just to be clear this is not a UNi Xonar specific problem, you'll have it with original drivers as well. It seems there are 2 types of somewhat same problem, one that does happen on any any Windows OS and one that happens only on Windows 10. I guess you have the latter, so you may not have the issues on Windows 7 and Windows 8.1.
      You should contact ASUS support and tell them your problem. It's unlikely they will do anything but they are the ones that should investigate and fix this. If possible you should return the card to the store and get a non ASUS audio card. If you can't return it, you should not use the card under the current circumstances as damaging your hearing isn't worth it.


  12. mzso13 Jun 2016 @ 23:49


    Do you happen to have some tips how to find the cause referenced in http://maxedtech.com/asus-xonar-unified-drivers/comment-page-176/#comment-124245? For example to find out if it’s a hardware issue?

    If first started to get high latency/clicking on a daily basis when I updated to latest uni-xonar. (I downgraded later, but it remained. It might be a coincidence though)
    I’ve been testing with the integrated sound adapter for a half a day. I still get it, but it seems not as much when I use my D1.
    It’s worst when I watch something on my DVB tuner, the picture falls apart in moments of high latency and there’s clicking/crackling.

    Does this latency data strike you as unusual?

    Here’s some stats now that I put back the Xonar: https://abload.de/img/xon-tuner-1minfnu72.png
    cmudaxp.sys is lot higher up (topmost) than realtek was. The others (usbport, dxgkrnl, ndis, etc…) are around the same as before. T think this accounts for the worse performance with the D1, but why I get too high latency with either is still a mystery to me.


    • CarvedInside14 Jun 2016 @ 00:01

      I've moved your comment. Next time please make a new comment when your are asking something unrelated to the original discussion of that comment thread.

      For the channel going silent problem, the only way to test if it's a hardware issue is try the card in another PC (that has not the same motherboard).
      For the high DPC latency problems, you should read The case of DPC latency - 4.Tips & tweaks in reducing DPC latency. I assume you are familiar with the fact that running ASUS Audio Center would increase the DPC latency considerably and you are not using it.


      • mzso14 Jun 2016 @ 13:36

        Thanks. I'll try. Although it looks like the worst offender cannot be helped. I update the VGA driver, LAN driver, xonar driver from time to time, yet it doesn't seem to get better. Still video (dxgkrnl.sys, nvlddmkm.sys) and network stuff (ndis.sys, tcpip.sys) remain some of the worst.
        I don't even have an idea what to do with the absolute worst (even before xonar it seems): USBPORT.sys - That's an OS built in thing, right? I don't know if it's possible or if it makes sense to disable some USB ports. Or portcls.sys which is also some of the worst. scsiport.sys is also there, I don't know why, my motherboard doesn't have SCSI connectors and I don't have SCSI devices.


  13. Qarj20 Jun 2016 @ 21:26

    Thank you very much for your drivers! These are the only drivers that work with my card. On Thursday 16 June I bought a new Essence STX II sound card and tried for hours and hours to get the official drivers to work. Neither the release drivers nor the beta drivers install.

    Of your drivers, the only ones that install (of the ones I tried, I didn't try all of them) are UNi-Xonar-STXII-11.5-v180b-r3.exe. Unfortunately it doesn't work with the Asus Audio Center. When I try to start that program nothing happens. However the C-Media Panel install works. If I run AsusAudioCenter.exe from within the official drivers install files, I get a message "Can't find any device".

    Thanks again. This post is mainly FYI and to say thanks. I've made a long post about my experience here: http://vip.asus.com/forum/view.aspx?id=20160617031041094&board_id=21&model=Essence+STX+II&page=1&SLanguage=en-us


  14. alexandre23 Jun 2016 @ 05:42

    Hey there, i was wondering how i can improve the dolby headphone? Mine sounds like it has lot of reverbation and some echo, and i dont hear where the sound come from at all.



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