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USB Ground Loops / Digital Interference
Old 12th November 2019
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USB Ground Loops / Digital Interference

When my speakers are plugged into my interface and I am monitoring the audio inputs, I get this digital interference / usb ground loop, can hear the mouse moving - even harddrives/fans moving.

I can record clean audio signals from my mic and synths by monitoring through headphones with my speakers unplugged from my interface, but when I want to just record my Minilogue with speakers on, the noise/interference is there - and in the recording.

I bought and tried a High-Speed USB Isolator from hifimediy to no avail (it couldn't even power the Babyface). I have lifted a power cable ground going to a speaker with no difference. I have tried plugging everything but my PC into a power conditioner - no difference.

This is really quite a maddening issue, has anyone solved something similar?

Thanks in advance for reading.

Last edited by sly_separator; 12th November 2019 at 02:47 AM.. Reason: typo
Old 13th November 2019
Lives for gear
lestermagneto's Avatar
I was having similar issues a few years ago... and honestly usb mojo is what it is for me, and i have heard mixed reports on isolators and whatnot...

all i found was reducing the number of hubs and getting new ones and proper cables helped or took care of everything for the most part.

i used to daisy chain 7 2006 usb 2 hubs and whatnot.... just a disaster... once i redid my usb and stopped monkeying around, it just got better for me.

granted,, keep in mind, not all computers usb handling / separating is equal obviously. Have had far better luck with macs in my experience in this regard then pc's , but i'm just one guy with a small sample set...
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