In order to construct a headphone composed of a housing which holds a driver unit and an arm attached to the housing easily and favorably, a driver unit driven by an inputted audio signal, a housing 110 that therein accommodates the driver unit and has on its periphery a first flange portion for attaching an ear pad on the outside and an arm connected to the housing are provided. Then, a second flange portion that is connected to the first flange portion on the housing side is provided so that both the flange portion on the housing side and the flange portion on the arm side function as a flange for attaching an ear pad and also both the flange portions hold the driver unit when the arm is joined to the housing.