The new Kindle DX has the "Read-to-Me" function, with its Text-to-Speech feature, Kindle DX can read books, blogs, magazines, and newspapers out loud to you. You can also play MP3 files as you background music while you read. You are able to download and listen to audio titles including bestselling audio books, radio programs, audio newspapers and magazines. To enjoy all these audio features, you for sure need a pair of good headphones! The Kindle DX Headphones give you high quality sound, they fit comfortably in your ears. They're compatible with Kindle DX / Kindle 2, and any audio source with a 3.5 mm headphone jack.