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by pavlus 103 days ago
Your microwave is leaky, and/or not grounded, but since you don't experience static, I assume you have grounding at your house. Without grounding static and mains hum is quite noticeable. Try touching the body of your pc and listen how silence changes in wired headphones.
1 comments

> but since you don't experience static, I assume you have grounding at your house.

It's illegal not to,