Today, headphones are rather an inseparable part of survival kit in the concrete jungle than a simple accessory. Listening to electrical audio signals has become less necessary with the development of amplifiers, and meanwhile some melomaniac decided it would be good to listen to jazz music without disturbing people around. Time passed, and headphones have gained another purpose – protecting the one who wears headphones about disturbing people around. Headphone size does not define sound quality anymore, and attractive design can be a feature of both tiny portable ear-fitting wireless and a bit bulky circumaural headphones. Headphones are also a good alternative for loudspeakers in the places, where they are inappropriate, and they are surely the greatest pleasure for every music lover. Just remember not to listen to very loud music and take care about your health.