All in all, the most natural solution
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That doesnāt work right for me.
When I stick it in like in your photo. Then the whining is gone, but to the great disadvantage of the volume.
So I only have 50% volume.
I always want it loud. Always have 100%
but like in your photo I only have 50% volume.
thatās way too quiet for me.
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Iāve drawn a holder here.
You can print it out with a 3d printer.
One holder is for screwing and the other is for sticking with tape.
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Weird. Itās the opposite to meā¦ 
No noise, but fully inserted is low volume and itās louder when not fully inserted.
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I am already very sure that it is a production error of the Pimax 8KX.
Somehow something is wrong with the sound card in the Pimax 8KX.
It actually seems to be down to the 8KX.
I canāt explain it to myself any other way.
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Maybe there is someone for whom everything works without any problems. At full volume. without whining.
Maybe he could measure how much OHM the DMAS has on him.
then we can compare.
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Do you got a older pimax 8kx?
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Yes I think so.
I ordered the 8KX immediately wherever possible.
Maybe there are some better compenents in the later 8kx unitsā¦i dont know.
Mine is working very well,and the mids and highs are very nice with some eq in the app boom3d
You get a 3d feeling because off the open design and you can realy spot(hear) where the enemy isā¦ if they got a little more bass there were perfectā¦ But i prefer them now above the Kdmas
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I have an early batch 8Kx and noticed a high pitched whine (similar to the sound the v2 base stations make) in both drivers when nothing is playing. When I played some music I was not able to notice any whine.
I tried changing USB ports both on the motherboard and PCIE USB controller, I tried lowering the volume to no effect. I hope this issue can be resolved in software/firmware it is irritating during silent moments.
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So I looked at my SMAS and it only has the positive and negative pogos for these pads. The purple and yellow pads are left floating when the SMAS is installed. I tried adding tape to the yellow and purple pads (as shown in your picture) so I could install the DMAS and float those pads in the same way. It still had the same ring as before and I couldnāt hear a change in audio performance at all.
Looking at your TRRS picture, the standard wiring would be:
Tip (Red) = Positive
First Ring (Green) = Negative
Second Ring (Yellow) = Ground
Sleeve (Purple) = Microphone.
With your 3 pole setup to get rid of the noise, are you tying the second ring and sleeve together essentially tying the microphone connection to ground? If so, Iām looking for a TRRS female to a TRS male adapter which would tie the microphone connection to ground in such a way. However most adapters with this physicality donāt do this, they instead send the microphone connection (the second ring of the TRRS) to the tip and ring of the TRS so this may be a dead end.
Iām wondering if the microphone connection is left floating in the headset and noise gets onto that line which is present with the SMAS setup (but much quieter) but is much more apparent with the DMAS setup. If you tie that microphone line to ground maybe the noise goes away?
Also trying to understand what is happening when you pull out the jack a little bit. Assuming the headset has a female TRRS connection:
Normal setup connections
Female connection (headset) <= Male connection (DMAS)
Tip (Postive headset) <= Tip (Positive DMAS)
First Ring (Negative headset) <= First Ring (negative DMAS)
Second Ring (Ground headset) <= Second Ring (DMAS)
Sleeve (Microphone headset) <= Sleeve (DMAS)
Setup with jack partially pulled out connections
Female connection (headset) <= Male connection (DMAS)
Tip (Postive headset) <=
First Ring (Negative headset) <= Tip (Positive DMAS)
Second Ring (Ground headset) <= First Ring (negative DMAS)
Sleeve (Microphone headset) <= Second Ring (DMAS)
Or itās not a discrete jump like Iām showing and the connections are bridged and the microphone is grounded. Just wondering what it going on and why the noise goes away when the jack is partially pulled out. I may tie the yellow and purple pads together which Iām hoping ties the microphone connection to the headsetās ground to see if that does anything.
Seems like either some wiring is different on the older 8k X headsets, they changed the design slightly or they are using a different DAC/amp on the newer units.
Does anyone have an older 8k X that doesnāt have the ring? Does anyone have a newer 8k X with the ringing? Just guessing in the dark.
Edit several hours laterā¦
Tried tying the two pads together. It didnāt make a difference. I as well measure 6.3 ohms across the positive and negative terminals. I measure 30kohms across the microphone and ground terminals of the DMAS.
I had one side with the DMAS and the other side with the SMAS. I have noise in both, they sound the exact same. The DMAS are just so much louder that it exposes the noise already there like weāve been saying.
Please write to Pimax Support.
PLEASE report the problem!
Make a ticket!
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So new 8kx works fine w/o hacks and plugs inseryed fully?
or do you still need the o-ring hack?
My 8kx is fairly loud, fully inserted , and I have the speaker hum on the right ear.
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So your ear foam mod. They look like they touch your ear. And change the sound more in the direction of the KDMAS.
but do you feel this is worth it?
I mean. Isnāt the whole point of these to get spatial audio WITHOUT having to feel earcups?
Also I assume this does nothing to privatize your audio so , its like a kdmas sans sound isolation and not sounding quite as punchy.
If I went to the trouble to do this , knowing the KDMAS probably sounds more satisfying. Wouldnāt I just buy the KDMAS earphones and call it a day?
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Hahahaha 
DuMASs
i get itā¦ROFL
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I donāt have the plugs fully inserted. When I do the volume is lower.
Probably, yes.
Itās not much different to normal headphones.
Some prefer a balanced FR and some prefer heavy emphasis on bass and so on.
To me, the DMAS works as designed (focusing on spatial audio sacrificing the low end), but as mentioned Iād still likea little more low end and suggested to Pimax to have a bass boost option (or even several different EQ options) in PiTool but not sure if itās doable with the driver theyāre using.
I have never heard the KDMAS (not a backer and I didnāt feel a need to buy it).
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I donāt have the plugs fully inserted. When I do the volume is lower.
Please report it to Pimax Support!
Itās not working as it should. It cannot be intentional not to insert the plug all the way in.
Pimax needs to know about it in order to find the problem!
PLEASE report it to the support !!!
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As a DMAS tester, I reported the exact problem of the high pitched whine all of you are having in my feedback and I never got a response about it. Looks like it was never sorted in the final versions unfortunately. I really would have liked to have gotten it to work properly.
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@pimaxQuorra how is the team planning on addressing this issue for folks that have this known issue?
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Thatās pretty fu*ked up. But why am I not the slightest surprisedā¦
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