The thread about the Air Pods reminded me of my curiosity on this topic, but I want to not hijack that thread.
Looking at hearing protection options beyond my usual in-the-ear plugs and over-the-head muffs, I was reading the packages on some electronic muffs the other day, and the NRR numbers were, well, disappointing. I'm accustomed to plugs with NRR of 32, and am fortunate to be comfortable wearing them (I realize that some don't have that good fortune). We also have passive muffs, with NRR of (if memory serves) somewhere in the upper twenties.
I also have an old pair of Flight Deck muffs, although they need new foam inserts before I would consider them useful, and even then I would want more protection than the advertised NRR of 27.
But the electronic muffs I see at price points below $150 share a NRR of 24 or less.
Is the intent to wear plugs AND such muffs? Or only wear such muffs when outdoors? Or are the extra "points" in the NRR overkill?
NRR numbers, in-the-ear plugs vs over-the-head vs electronic
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