USB parasites 
C’est le problème avec l’alim d’origine avec mise à terre, c’est pour cette raison qu’il faut une alim sans terre avec double isolation. le symbole de la double isolation c’est deux carrés, l’un (le plus petit) à l’intérieur de l’autre (le plus grand).
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Did you tried a DI box with groundlift. That works for me. And I have a Mod Duo X plugged into a Dwarf with zero noises.
Oui, branchée ou pas au pc, même bruits
Unfortunately, I don’t have a passive DI box anymore… Maybe I will have to buy one.
Funny.
Please keep the conversation in English so that you don’t exclude the non-French speaking world. 
Merci beaucoup Zwabo, je vais essayer de trouver une alim idoine…
Ok.
Thanks a lot for the guys who replied!
So I tried to swipe with another power supply as Zwabo told me. Still the same problem. Should I speak to the support?
I don’t want to play with noise gate plugins too much. It annoying for me.
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Yes, I think so…
You could record the noise and post it here. We are aware of the ground loop noise issues and obviously, a groundless power supply would solve this issue. If you already tried that, you should have another cause of noise.
Thank you! I will do it when I get a moment for that. I also ordered a passive DI box and will try…
The mod audio support didn’t reply yet.
Have a nice day every body!
Hi there! I am jumping on the train of Mod Dwarf noise. I absolutely love the pedal. I use it as a looper to do transition DJ style between my synth set up. But the noise is bothering me. It is very annoying when cranking the headphone output to max (12) otherwise it kind of sits in the back almost inaudible.
But when sending the out to the DAW is also there, the same noise.
I went through much of the topics related to this and it seems that some results have been achieved with some hum destroyer DI like this:
I have a very simple question @jon or whoever can shed some light on it. I am trying to identify the root cause. Should the noise be present even if the Mod Dwarf is not connected to any other piece of equipment (no ins, no outs, no usb, just headphones, no plugins pedal chain set, Mod Dwarf plugged directly in the wall socket)?
Thanks I advance!
Ground Loops are hard to diagnose, but no, you should not sense any (ground loop related) noise in the setting you are describing.
Notice that you could still sense other kind of noises (e.g. some EM field from neon lights, washing machines, coming thru the guitar pickup or cables)
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I needed a signal splitter the other day and was like, oh, I can just set one up in the dwarf, use it as a DI box, as soon as I plugged it in I was like nooooope. Ground lift setting did nothing, I can’t recall if Dwarf has a balanced output but it definitely introduced some noise demons into everything so I didn’t use it (I have what I thought was a quiet power adapter from amazon). That said, I wonder if any of these solutions would work well with the Dwarf— regardless it’s a loopop video on noise reduction so I’m sure it will be relevant to many people on these forums:
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I believe it can happen. The origin of the hum can come from a gazillion of things. And some times can be something different than a ground loop, but (for example) the lights at your place or something in the electric system that is causing the interference.
You also mention only Headphones. we are aware that the Headphones output on the MOD Dwarf tends to be more noisy. That’s kind of a trade-off so it can handle all the different headphone impedances.
Question: if you use the normal output on the same conditions (nothing else connected) do you still have the noise?
I was able to remove all noise from the headphones out with this: Amazon.se
Got the idea from this video: https://www.youtube.com/watch?v=3asGhHUVO0o
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