An ear mount (91, 91B, 91C, 91D, 91E) comprising: a body part mounted on a conchal cavity (Eb) in a use state, the body part including a protrusion, a cylindrical part extending from the protrusion, an inner housing (2, 2D, 2E) on which the protrusion is formed, and a cover (3, 3B, 3C) configured to cover the inner housing (2, 2D, 2E); and an insertion part mounted on the cylindrical part and inserted into an ear canal in the use state, wherein the cover (3, 3B, 3C) includes a first end sealed and fixed to the inner housing (2, 2D, 2E), an intermediate part separated from the inner housing (2, 2D, 2E) to form an air chamber between the intermediate part and the inner housing (2, 2D, 2E), and configured to cover the protrusion, a second end located opposite to the first end with the intermediate part therebetween, and an opening located at the second end and through which the cylindrical part is inserted, characterised in that the ear mount (91, 91B, 91C, 91D, 91E) comprises a pressure regulator configured to control ventilation of air between the air chamber and an outer space (Vg) through the opening (34, 34B) in accordance with a pressure difference between the air chamber and the outer space (Vg), and wherein the pressure regulator includes the opening (34, 34B), the intermediate part, and the protrusion. a body part mounted on a conchal cavity (Eb) in a use state, the body part including a protrusion, a cylindrical part extending from the protrusion, an inner housing (2, 2D, 2E) on which the protrusion is formed, and a cover (3, 3B, 3C) configured to cover the inner housing (2, 2D, 2E); and a protrusion, a cylindrical part extending from the protrusion, an inner housing (2, 2D, 2E) on which the protrusion is formed, and a cover (3, 3B, 3C) configured to cover the inner housing (2, 2D, 2E); and an insertion part mounted on the cylindrical part and inserted into an ear canal in the use state, wherein the cover (3, 3B, 3C) includes a first end sealed and fixed to the inner housing (2, 2D, 2E), an intermediate part separated from the inner housing (2, 2D, 2E) to form an air chamber between the intermediate part and the inner housing (2, 2D, 2E), and configured to cover the protrusion, a second end located opposite to the first end with the intermediate part therebetween, and an opening located at the second end and through which the cylindrical part is inserted, characterised in that a first end sealed and fixed to the inner housing (2, 2D, 2E), an intermediate part separated from the inner housing (2, 2D, 2E) to form an air chamber between the intermediate part and the inner housing (2, 2D, 2E), and configured to cover the protrusion, a second end located opposite to the first end with the intermediate part therebetween, and an opening located at the second end and through which the cylindrical part is inserted, characterised in that the ear mount (91, 91B, 91C, 91D, 91E) comprises a pressure regulator configured to control ventilation of air between the air chamber and an outer space (Vg) through the opening (34, 34B) in accordance with a pressure difference between the air chamber and the outer space (Vg), and wherein the pressure regulator includes the opening (34, 34B), the intermediate part, and the protrusion.