They're much more subtle than most earplugs, only about 10 dB of reduction, and it's a fairly level reduction across the frequency spectrum. So rather than the normal muffled effect you get from normal earplugs, they sound like you uniformly turned the volume down on everything. In overstimulating environments (noisy HVAC, meetings where the person controlling the dial-in has it too high, coworkers who aren't great at modulating their voices) they're fantastic.
I got the "Engage 2 Plus". Though like I mentioned, they reduce sound by enough on their own that the included removable "Mute" wasn't worth the extra cost over the basic "Engage 2".
And one thing I forgot to mention is that they don't reduce the sounds of your own head. So your own voice sounds the same, and you still get that lip/tongue smacking effect that traditional earplugs have. Neither of those is really an issue, but I may have slightly oversold them with "level reduction across the frequency spectrum".
That’s amazing. I’d like to turn the sound down on the world many a times. Which model do you have?