Denon have a fantastic reputation as making some of the best hi-fi and audio equipment these headphones definitely do not disappoint. Some of the features i particularly like are the in ear canal-type design, which brings the music directly into your ear which also helps to reduce ambient noise and lets you enjoy the music to its full potential, they also use an "acoustic optimizer" to balance out the pressure that builds up behind and in front of the driver for a more natural sound, this brings out ideal acoustic characteristics in general they have a full and crisp sound quality. They come with a hard case and the same set of three rubber fittings - large, medium and small. They use a gold plated stereo mini jack for a high quality connection they also have a very cool and useful tangle-resistant cable. overall a good solid set of headphones.