I've been through this annoying hiss over a year.  In my case, I can hear noise when moving mouse, or when there are any activities on monitor screen. (eg. browsing web, play 3D program,etc)   I had tried everything, such as CMOS (CPU EIST, Virutalization, etc Disabled), swap pci location, adjust 2D/3D acceleration from Windows control panel/Nvidia control panel, disable smooth scrolling, turn off all video features, changing OS (Windows XP/ 7 ), I still can hear hiss from mouse or display movement via my headphones.

Finally I got grounding idea from a guy from head-fi website using carpenter tape around metal parts. (main idea is to not letting metal parts touches computer case, and force ground only down into PCI slot), and this finally solve hissing problem for me.   Finally I'm in peace.  My hardware is Gigabyte P35-DS3R mainboard, MSI 8800GT silent video card, HDSPe AIO rev. 1.3 (has cable modded from RME).  Hope this help.

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Hi there,

Thanks for the tips. I'll try it out later tonight. BTW does anybody know how many Watts will need an RME HDSP 9632? I am using an 120W external brick PSU and every 15-20 min my pc will turn off by itself. Could be a faulty PSU?

Cheers, Axell.

If this is a grounding issue, why would this only be a problem with some motherboards/videocards? Very confusing. Can't RME be more specific on what it actually is that causes this problem and why it only affects some computers?

Oki after buying a new video card and still having the same problems with electrical noise interference between my motherboard and RME 9632 I found out that what was the problem..

The RME inputs or other outputs were the culprit and the ONLY way was to disabling everything else than the output i'm using from Windows 7 sound playback/recording

RME should inform every users that muting the inputs or output will not block EMI... only disabling them in windows 7 will fix this ANNOYING defectuosity..

At least I can breath now, EMI was rendering me crazy...

I don't need the inputs for now so at least the output is clean.

OK, I thought I would help users out who have this hiss problem.
I had the problem in my old system, but I had the luxury of building a new system a couple of days later.
Just to be clear the problem I had was interference from Hard drives, mouse movements, through both my speakers and my headphones with nothing else connected.

To my knowledge this is a ground issue, BUT NOT WITH THE RME CARD
When I took my old PC apart I noticed that only one of the fixing holes on the motherboard is marked as grounding point (I needed to do quite a bit of research to identify this) Also on my Case (I have used the same case for 3 systems) I noticed that only one of the motherboard fixing pillars was Metalic (Ie: For case grounding) in this case the metalic pillar did not correspond to the grounded fixing hole on my motherboard, hence THE MOTHERBOARD WAS NOT CASE GROUNDED
Now this was not an issue prior to getting the AIO because a was using an EXTERNAL MOTU interface.
It is unfortunate that the AIO is such a sensitive device that it exposes promblems with a computers grounding system. A good grounding schema on a computer should achive near silent operation of the AIO (as I have now)

Unfortunately, not every one has the luxury of making a new compute, but anyone who does build a system should be aware of motherboard grounding.

If you are experiencing the noise/interference problem, I advise that you get techy, read up on your motherboard and confirm that it is indeed correctly grounded to your PC's case.

I'm going to speculate here but I would say the grounding issue of modern computers is much more wide spread than we imagine, the harsh reality is that PC manufacturers arent aware of it because so few people actually use INTERNAL High quality PCIE sound cards, Casual users are satisfied with onboard sound (which is also suceptable to this problem on cheaper motherboards) and many pro users opt for external interfaces (That said, those of us who use the PCIe AIO know the benefits of ultra low latency when using PCIe) so this problem goes un noticed in the long run (it doesnt affect the performance of a PCIe video card)

I'm no grounding expert so there is probably more you may need to know/read to resolve every instance of this issue, but in the case of big name manufacturers such as Dell, HP & Apple I would suggest you make them aware of the issue, confident in the knowledge that this problem resides with THEIR grounding schema and not the PCIe card.

Here's how I made the outputs of my Hdspe AIO totally quiet.. It's a power issue, at least for me. You need to turn off the cpu idle setting. First go into the registry and tweak so you get the setting in windows and then go to power settings and switch off the idle setting.

Here's how you do it..

1. Execute: "regedit"
2 .Locate: HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Power \ PowerSettings \ 54533251-82be-4824-96c1-47b60b¬740d00 \ 5d76a2ca-e8c0-402f-a133-215849¬2d58ad
3. Change Attributes from 1 to 0.
4. Then, through the control panel - power - in the settings mode select power management processor. There will be an option disabling idle processor and all noise and pops will disappear.

This also helps if you get a high frequency sound from your computer, that's how I found it on a computer thread! I realize this is an old thread but I guess people run into this problem every now and then from upgrading computer parts and interfaces. It's not the RME AIO card that's fault it's bad power management in your computer! Hope this helps!

image: rme aio isolation

it's standard isolation tape..

It solves all the noise - I take the risk

Hi
The RME AIO Isolation link is broken...
Would like to try this.

TIA

Hello,

i bought my AIO new on 02.04.2015 but i can not see any green point on the package!
Does this hint that i got a non-modified card?

How can i find out if i have a non-modified card?

I kind of doubt that as at this point there should not be any "old" cards around but i am
not sure as i am having the same issues as described.

The Hiss on the Headphone output does not bother me as i do not use this Output.

However i am having a constand and quite audible noise on the left analog input channel which
renders this input completely useless.

As for now i only use the right input channel only as i do not record more than one source
simultaneously but still i think that the left input should work flawlesly considering that i
have bought the card new.

I also owned two HDSP9632 cards previously and they both had the same issue.

I think that it might have something to do with the breakout cable (symmetrical)
I have also bought four of these by this time. They work at first but show the reported problem
after a short time even there should be no "wear" as my PC is stationary and not being moved etc.

Any suggestions?

cheers
FIXXXER