Koss's miniature portable earphone, affectionately dubbed "The Plug," makes use of an ear-cushion material (similar to that used in sound-blocking earplugs) that slowly expands in your ear canal to provide a custom fit and maximum sonic isolation from external noises. A detachable, extrawide headband makes these Koss-termed "stereophones" easy to carry or store. For...
Brain Acid in-ear buds deliver a bigger, badder listening experience. Their small 9mm driver delivers clear detail and balanced tonal range, while the flexible ear cushions fit in a variety of different ears. They sit securely in your ear while blocking external noise