A capacitive electro-acoustic transducer includes a pair of input terminals, a pair of output terminals, an electrode plate, and a diaphragm. The pair of input terminals receives an audio signal, and the pair of output terminals outputs the audio signal, wherein at least one terminal of these terminals is a conductive magnet. The electrode plate has a first end and a second end electrically connected to a first input terminal of the pair of input terminals and a first output terminal of the pair of output terminals, respectively. The diaphragm is disposed on one side of the electrode plate and has a third end and a fourth end electrically connected to a second input terminal of the pair of input terminals and a second output terminal of the pair of output terminals, respectively.