KEF’s vented tweeter technology offers the purest, fastest and most articulate high-frequency response you'll likely ever treat your ears to. Here's an in-depth discussion of what exactly a vented tweeter is and why your ears deserve them. Of course, there's more to it than what we can cover in one quick blog post, but we'll let all those speaker companies that don't have vented tweeters figure out how to do it on their own.