A receiver is provided with a connector including: an outer earbud contact composed of a tube-shaped conductor and provided on the earbud side, an inner earbud contact arranged inside the outer earbud contact via an earbud-side insulator, an outer cable contact composed of a tube-shaped conductor and provided on the cable side, and an inner cable contact arranged inside the outer cable contact via a cable-side insulator; a coaxial connector being formed when the outer contacts are screwed into each other.