I like magnets. At work we can only have one listener. The magnets are great so one of them doesn't dangle. I first heard about EMF air tube headphones from Ken Rohl at Fresh and Alive. He and others say regular in-ear headphones act like an antenna, sending electromagnetic radiation into your head. As long as everything fits. Air tubes reduce the sound quality a bit, but that's to be expected for any of them. To me the difference is not very noticeable. I hope I remember to update them when they wear out. My kidneys get hit at work. They usually only last a month or two.
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