USB Isolators to eliminate ground loop?


I believe I have an issue with a ground loop. I'm looking at some USB Isolators. I found this,

Would this eliminate ground loop? I have both my both two outputs going to my mixer from my USB DAC and also from headphone out?

Evan Carroll

Posted 2012-10-29T16:56:58.323

Reputation: 903

I might try some free and easy possible solutions first. Try different outlets/circuits... putting different devices on different/same circuits, etc... – JoshP – 2012-10-29T17:29:08.203

They're all on the same circuit, no joy. =( – Evan Carroll – 2012-10-29T17:30:42.647

1Actually, you want your audio devices to be on the same circuit. It is when they are on different circuits and the grounds float relative to each other that you run into problems. – ObscureRobot – 2012-10-30T19:14:36.377

I don't think this question is off topic, but you would probably get better answers over on

– ObscureRobot – 2012-10-30T19:15:43.880

Evan - from your description on the other question, it does not sound like you have a ground loop issue. You would be hearing quite low frequency noise (50 or 60Hz depending on mains supply) – Rory Alsop – 2012-10-31T09:44:20.317



That device is built around the ADuM4160. I have used that device to isolate USB and it works great, however I have never used it for audio applications. It should break a ground loop, assuming that is the problem that you are hearing.

Note that the ADuM4160 max speed is 12 Mbps. Some USB devices expect to be able to function at 480 MBps, but an audio interface should be fine with the slower speed.


Posted 2012-10-29T16:56:58.323

Reputation: 168