Well, I gotta say, at first I thought rather snarky “these things don’t work!” But here’s why, pay attention. I was “expecting” sound as “per usual”, meaning a dulling of the higher frequencies. Fiddling with the adjusters I finally realized the attenuation of db NOT the attenuation of clarity! WoW! Once the user realizes this it’s suddenly night and day! If you have a pair give them real thought and “listen”. You’ll get it! As an audio engineer, I have a real desire for protecting my precious tools, in name EARS! Some may think pricy but good n clear is worth the $$!