DTS DCH Driver for Realtek HDA [DTS:X APO4 + DTS Interactive]

[Ferather]

Features: DTS:X Ultra (APO4) | DTS Sound Unbound (APO4) | DTS Interactive (+APO4).

Main directory: https://www.mediafire.com/folder/9yrokjhyh2slx/DTS_DCH_Drivers

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> Use 7-Zip or WinRAR to extract, the Windows version will mark all files 'blocked'.
> Install the C++ libraries (prerequisite), before installing the driver.

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To install-update the drivers, open 'Device Manager' right click and uninstall the audio device (tick delete driver), but do not restart.

Run 'CMD' as admin, then use pnputil (see here) -or- use 'DriverStoreExplorer', to remove all residual drivers (extensions, other).
You can check the 'Provider', 'Class' and 'Signer' to identify any drivers, other, that should be removed.

Double click 'Install' in the driver folder, then restart. Run 'Device Cleanup Tool' as admin (right click), to remove ghost devices.

Uninstall | Pnputil -1 | Pnputil -2 | Show Hidden | No Ghosts


Restart the computer, then check again for ghosts (restart again if needed).

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Enable 'Stereo Mix', mute the stream, then enable 'listen to' (default device) to keep the DTS encoder always on.
You can also do the same if you are using only analogue, it will reduce initializations, and delay.

You can set 'listen to' to a specific device if needed, simply select the device from the drop down menu.

Stereo Mix -1 | Stereo Mix -2

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To prevent the provided DTS apps from being automatically updated, disable Windows store auto-updates.
You will also need to uninstall any updated version, before re-installing the provided one.

If you own a Sound Unbound license via the store, you can update it.

Windows Store

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After the API registration step (optional) (RTK Panel.txt).

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If you are stuck with Windows downloading drivers-other over the top of DTS DCH, see the guide below.
In more extreme cases, remove them, then use Windows Update MiniTool to hide them.

Regedit: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\DriverSearching
Create a new DWORD: DriverUpdateWizardWuSearchEnabled (if it exists, set it to 0).

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5.1 Speaker Test: https://www2.iis.fraunhofer.de/AAC/ChID-BLITS-EBU.mp4
Stereo to 5.1 direct (not expand): Stereo Surround Upmixer

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Current release version: 6.0.9800.1 [Pro] [2025] Desktop HDA - Signed.
Note: APO's in this pack use 32 bit float processing.

Enjoy DTS DCH for Windows 10-11

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[Skylined]

Your driver works perfectly. Thanks a lot for your hard work.
I'm new to this but is it possible to get this to work on a bluetooth speaker endpoint using FX configurator.

Many thanks

 

[mclaren85]

My motherboard already supports DTS Custom. Is there anyway that I can skip some procedures to make DTS Ultra?
Btw, thanks for sharing, great work..

 

[Ferather]

You may be able to install just the RTEXT.inf file, however the base driver will need the info for DTS-SFX, DTS-MFX and DTS-EFX and also register them.
You could use FX configurator to add DTS as composite into the registry (where the driver sets it up), but they wont be registered.

It's possible I could write an extension driver that bolts onto your DTS custom, giving you Ultra, it will be beta.

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Don't forget to turn off store auto-updates, it will update Sound Unbound, simply uninstall and reinstall the provided app if it does.

 

[mclaren85]

I got BSOD. No chance.. Thanks anyway. I will continue to use DTS Custom until you find another way

 

[Ferather]

Is that 12XX series? If your current drivers works then the extension will be fine, when I make it.

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DTS:X Extension 6.0.9126.1 [Beta], for pre-existing drivers (should support any driver):

DTS-X 6.0.9126.1

MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.

www.mediafire.com

To uninstall the extension, disable the audio device then run pnputil (see first post).

Edit: Quickly added the Ultra store .inf file, sorry I forgot.

 

[mclaren85]

Is that 12XX series? If your current drivers works then the extension will be fine, when I make it.

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DTS:X Extension 6.0.9126.1 [Beta], for pre-existing drivers (should support any driver):

DTS-X 6.0.9126.1

MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.

www.mediafire.com

To uninstall the extension, disable the audio device then run pnputil (see first post).

Edit: Quickly added the Ultra store .inf file, sorry I forgot.

Yes , it is Realtek S1200A. Thank you for your help

 

[mclaren85]

@Ferather , thank you for your patience nad hard work, but still, I've been dealing with bsod..
I think I'm going to buy an Asus Soundcard to run DTS X

 

[Ferather]

@mclaren85

Ok, from my reading of S1200A drivers it doesn't use stream-mode offload effects, my guess is this is the issue. I can remove those lines from the extension if you wish to try again.





Changes made: https://www.mediafire.com/folder/2r8gsyool5aua/DTS_DCH_Extension (for pre-existing drivers).

 

[mclaren85]

@Ferather So now the DTS Ultra Drivers are all installed perfectly. Yet the interface is still the same as before even I did uninstall the DTS Custom appx.
But thank you very much bro. That is a good progress which convince that I can also use full power of DTS in one day

 

[Ferather]

I suggest using Equalizer APO to increase overall performance and replace DTS Connect, I have setup analogue so that E-APO will make a composite with DTS:X, this is not required on digital.




With DTS APO4x, you wont ever want to go back to just stereo, here is 2 stereo audio files to test, I suggest SPDIF.
Where possible setup media players to use system codecs, or test with Windows Media Player.

Change "inputChannelCount == 0" to "inputChannelCount == 6" for YouTube.

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I can also plug headphones into my Z906 unit, and get SPDIF to headphones, hardware.

 

[StuDentBR]

thank you ,it worked for me.

 

[supermanz]

ok so ive installed by the steps supplied on page one, i have everything working except when i install dts:x ultra i get a message saying failed to install dependices , yet i have all the correct visual's installed. Any ideas ?

 

[Lai_yunie_yanto]

Why i'd always get BSOD, startin with your previous driver till now.
I'm using alc 1220 & Logitech z906.
The compatible one with me only till 6.0.9116.4

 

[pyuras]

@Ferather

Hi,

My Onkyo receiver (HT-R395) does not support DTS:X, only DTS-HD Audio. Would using this driver be any better in terms of audio quality than AAF in this scenario? Thanks for your hard work and support.

 

[emanresu]

Ferather is on fire

 

[erpguy53]

My GA-990FXA-UD3 (rev. 4.0) with ALC889 supports [24 bit 192Khz], both analogue and digital.

View attachment 193986
View attachment 193987

You will need to change the EFX for digital to Realtek for PCM.

wow you have a Gigabyte board? I have a Gigabyte board that uses Realtek ALC892 and may want to try out one of your modded DTS DCH drivers sometime later this year.

maybe update the drivers to v6.0.9129.1 like what AAF recently did

 

[Ferather]

@pyuras

There is two versions of DTS-HD, HRA and MA (DTS-HD HRA, DTS-HD MA), as I recently found (still getting my head around lots of this my self).

If your receiver can do DTS-HD MA, you are 100% compatible with lossless DTS:X, as it uses DTS-HD MA standard.
If your receiver can do DTS-HD HRA, you will need an app such as Potplayer to transcode it, or play just core.

Will the audio quality be better? Technically yes, DTS:X is built into the driver, therefor even analogue is enhanced with DTS:X Ultra.
If you prefer Dolby enhancements, then you might say differently, it depends which system you prefer.

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@erpguy53

Yes I am a big Gigabyte fan, they make sound cards (or used to), graphics cards and motherboards, and ofc high quality gaming versions.
I did not realize there was an update, been bashing my head so much with DTS:X on SPDIF, hehe, will do this soon.



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DTS DCH 6.0.9129.1 (Signed) - File download and the install guide is in post 1, here.
I also updated the store .inf for Ultra, remove the old one with pnputil.

Main driver: Most ALC's | ALT1 driver: ALC892, other | ALT2 driver: 12XX specifically.

I notice an improved experience with Toslink, instant response with E-APO.

Spoiler: Flashing image!

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Changed the offline app installers for Ultra and Sound Unbound.
They are self licensing ones (but the same version).





I dare you to play the Headphones:X video over Toslink, LOUD!

 

[Lai_yunie_yanto]

@Ferather
Do you have copy of this previous driver 6.0.9116.4 ? Could you share the link.
I'd kept trying to install your newest driver, but got no luck. Still BSOD for 12xx series.
My copy of 6.0.9116.4 is accidentally deleted by me.
I think i'm gonna hanging with that driver for a while now.

 

[Ferather]

Did you try the alternative extension? At which point do you get the BSOD after the driver or the extension? and are you using HDMI?

 

[Lai_yunie_yanto]

Did you try the alternative extension? At which point do you get the BSOD after the driver or the extension? and are you using HDMI?

I don't know which file is the alternative. BSOD always happening in the middle of driver installation ( disable driver signing ).
I didn't use hdmi for sound, just for graphic only. because my display ( Led ) only output dts 2 channel, through my Z906, Although i'm using spdif.

 

[Ferather]

HDXRT4.inf and RTEXT2.inf. Else edit with notepad, search for (edit > find): HKR,InterfaceSetting\SysCustomizedFx\FX\0,%PKEY_FX_StreamEffectClsid%,,%DTS_SFX_CLSID%
Delete it, and save it, obviously you will need to disable driver signing, if not again but remove:

HKR,InterfaceSetting\OEMHDMISettingsOverride\EP\0,%PKEY_AudioEndpoint_FullRangeSpeakers%,%REG_DWORD%,0x0000003F
HKR,InterfaceSetting\OEMHDMISettingsOverride\EP\0,%PKEY_AudioEndpoint_PhysicalSpeakers%,%REG_DWORD%,0x0000003F

Tell me the result, and thankyou for your time.

 

[Lai_yunie_yanto]

HDXRT4.inf and RTEXT2.inf. Else edit with notepad, search for (edit > find): HKR,InterfaceSetting\SysCustomizedFx\FX\0,%PKEY_FX_StreamEffectClsid%,,%DTS_SFX_CLSID%
Delete it, and save it, obviously you will need to disable driver signing, if not again but remove:

HKR,InterfaceSetting\OEMHDMISettingsOverride\EP\0,%PKEY_AudioEndpoint_FullRangeSpeakers%,%REG_DWORD%,0x0000003F
HKR,InterfaceSetting\OEMHDMISettingsOverride\EP\0,%PKEY_AudioEndpoint_PhysicalSpeakers%,%REG_DWORD%,0x0000003F

Tell me the result, and thankyou for your time.

I'll get back & report to you, asap.

 

[Ferather]

Thankyou

 

[Lai_yunie_yanto]

HDXRT4.inf and RTEXT2.inf. Else edit with notepad, search for (edit > find): HKR,InterfaceSetting\SysCustomizedFx\FX\0,%PKEY_FX_StreamEffectClsid%,,%DTS_SFX_CLSID%
Delete it, and save it, obviously you will need to disable driver signing, if not again but remove:

HKR,InterfaceSetting\OEMHDMISettingsOverride\EP\0,%PKEY_AudioEndpoint_FullRangeSpeakers%,%REG_DWORD%,0x0000003F
HKR,InterfaceSetting\OEMHDMISettingsOverride\EP\0,%PKEY_AudioEndpoint_PhysicalSpeakers%,%REG_DWORD%,0x0000003F

Tell me the result, and thankyou for your time.

Still No Luck. BSOD keep happening.
I'd already remove the registry just like you told me.