
I use in-ear headphones on stage. None of them block what the manufacturer claims, no matter how expensive it is. That's why I wear range cups over my headphones. The problem is that the shells actually boost bass frequencies because the plastic vibrates with the bass, which in turn vibrates your skull. For some reason Elvex doesn't do that. I don't know if that's intentional, but they're great for protecting ears on stage.

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