A digital speaker, comprising: a speaker main body; a plurality of digital amplifiers each of which corresponds to a respective channel of a plurality of channels; and a plurality of coils (C1 to C6), characterized in that each of the plurality of digital amplifiers comprises: a positive electrode signal output circuit that is associated with a positive electrode and that outputs three-valued positive signals; and a negative electrode signal output circuit that is associated with a negative electrode and that outputs a negative three-valued signal which is inverted from the positive three-valued signal to be output from the positive electrode signal output circuit and which maintains a signal amplitude of the positive signal, the negative electrode signal output circuit outputting the inverted signal at a same timing as a timing of the positive signal, wherein each of the plurality of digital amplifiers is provided with a low-pass filter through which an output of the positive electrode signal output circuit is output to the respective coil and a further low-pass filter through which an output of the negative electrode signal output circuit is output to the respective coil, the digital speaker comprises a code conversion circuit which generates three-valued signals representing three values that are generated for each of the plurality of channels and which outputs the three-valued signals to the respective digital amplifiers each of which is provided to each channel, and the signals representing the three values from the code conversion circuit are input to the positive electrode signal output circuit, the digital speaker comprises an inverting circuit which inverts the three-valued signals that are input from the code conversion circuit and that are branched, and which inputs the inverted three-valued signals to the negative electrode signal output circuit, the positive electrode signal output circuit and the negative electrode signal output circuit are connected to each of the plurality of coils (C1 to C6), and the three-valued output signals that are inverted to each other and that have the same amplitude are input at the same timing to each of the plurality of coils (C1 to C6). a speaker main body; a plurality of digital amplifiers each of which corresponds to a respective channel of a plurality of channels; and a plurality of coils (C1 to C6), a positive electrode signal output circuit that is associated with a positive electrode and that outputs three-valued positive signals; and a negative electrode signal output circuit that is associated with a negative electrode and that outputs a negative three-valued signal which is inverted from the positive three-valued signal to be output from the positive electrode signal output circuit and which maintains a signal amplitude of the positive signal, the negative electrode signal output circuit outputting the inverted signal at a same timing as a timing of the positive signal, wherein each of the plurality of digital amplifiers is provided with a low-pass filter through which an output of the positive electrode signal output circuit is output to the respective coil and a further low-pass filter through which an output of the negative electrode signal output circuit is output to the respective coil, the digital speaker comprises a code conversion circuit which generates three-valued signals representing three values that are generated for each of the plurality of channels and which outputs the three-valued signals to the respective digital amplifiers each of which is provided to each channel, and the signals representing the three values from the code conversion circuit are input to the positive electrode signal output circuit, the digital speaker comprises an inverting circuit which inverts the three-valued signals that are input from the code conversion circuit and that are branched, and which inputs the inverted three-valued signals to the negative electrode signal output circuit, the positive electrode signal output circuit and the negative electrode signal output circuit are connected to each of the plurality of coils (C1 to C6), and the three-valued output signals that are inverted to each other and that have the same amplitude are input at the same timing to each of the plurality of coils (C1 to C6).