An electro-acoustical transducer of the present invention includes: a diaphragm of an elongated shape; a first magnet of a parallelepiped shape which is situated at a side of one principal surface of the diaphragm such that long sides thereof are in parallel with long sides of the diaphragm, and which is polarized in a short side direction to form a magnetic gap; a second magnet of a parallelepiped shape which is situated next to the first magnet in the short side direction of the diaphragm, such that long sides thereof are in parallel with the long sides of the diaphragm, and which is polarized toward a direction in a manner opposite to the first magnet so as to form a magnetic gap; and a coil of an elongated ring shape which is situated on the diaphragm such that long sides thereof are situated in the magnetic gaps.