See related: Buzz or Hum in Computer Speakers. With analog headsets, there are some other ways of fixing the problem by isolating the signal better. It provides a female-to-female 3.5mm setup. This device is designed to work with any music player that outputs stereo audio over a 3.5mm jack.
#3.5 mm ground loop isolator adapter full
With USB headsets, the only way to fix this is to plug your laptop into a grounded outlet. This isolator solves that problem by providing ground path isolation between components while maintaining full frequency response. This is a surefire sign you have a ground loop problem. Sometimes, if your laptop or a USB accessory is made of metal, you might notice the buzz goes away if you touch a metal part.
When you plug in your laptop to a grounded outlet (3 prongs), the circuits for audio in the laptop have a 'ground' signal to make sure the audio doesn't get any interference.
The problem is caused by a well-known phenomena, a ground loop. On a PC, different adapters work differently, but hopefully you have a power adapter with a 3-prong plug. On a Mac, if you're using the Apple power adapter without the extra power cable (with a 3-prong plug instead of the 2-prong plug), you may get a buzzing sound. Solution: about 99% of the time, the problem is fixed by simply plugging the laptop into a grounded (3-prong) outlet. Almost every time I hear someone having this trouble, they're having the problem while using the headset with a laptop. Problem: I've heard from a lot of people about hum or background 'buzz' in recordings and Skype conversations when using a USB headset (like the one I have, the Logitech USB Headset H350).
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