Earphone

An earphone comprising:

• an electrodynamic speaker unit configured to electroacoustically convert an audio signal into a high-frequency sound wave containing a band component having a higher frequency than that of an audible band of a human being, thereby emitting the high-frequency sound wave;
• an electromagnetic speaker unit configured to electroacoustically convert the audio signal into a low-frequency sound wave containing more band components having a lower frequency than that of the high-frequency sound wave, thereby emitting the low-frequency sound wave;
• and
• a housing to an inside of which the electrodynamic speaker unit and the electromagnetic speaker unit are attached, wherein
• in the housing, the electrodynamic speaker unit is attached such that a first acoustic space and a second acoustic space are defined on one side and the other side of a diaphragm of the electrodynamic speaker unit, and the electromagnetic speaker unit is attached and housed in the second acoustic space,
• the housing includes an inner leak port portion forming an acoustic path for communication between the first acoustic space and the second acoustic space,
• the inner leak port portion includes a housing member forming an outer shell of the housing, and an attachment member interposed and attached among the housing member, the electrodynamic speaker unit, and the electromagnetic speaker unit, and
• a groove provided at the housing member or the attachment member forms the acoustic path for communication between the first acoustic space and the second acoustic space.