A power amplifier comprising: a class D amplification section that includes an input section and a switching section serving as an output stage , said switching section being configured to be switched depending on an output signal of the input section , wherein the class D amplification section is configured to output current from a power source (+B, -B) to a load (SP) via the switching section; a load current feedback circuit that is configured to negatively feed back the current flowing in the load (SP) to the input section of the class D amplification section ; and a filter current feedback circuit , different from said load current feedback circuit , said filter current feedback circuit being configured to negatively feed back a current flowing in a filter interposed between the output stage of the class D amplification section and the load (SP) to the input section of the class D amplification section ; wherein the load current feedback circuit includes a first connection section comprising a first resistor and a first capacitor which are connected in series, said first connection section thus being configured to adjust frequency characteristics of a feedback amount of the negative feedback performed via the load current feedback circuit ; and wherein the filter current feedback circuit includes a second connection section comprising a second resistor and a second capacitor which are connected in series, said second connection section thus being configured to adjust frequency characteristics of a feedback amount of the negative feedback performed via the filter current feedback circuit . a class D amplification section that includes an input section and a switching section serving as an output stage , said switching section being configured to be switched depending on an output signal of the input section , wherein the class D amplification section is configured to output current from a power source (+B, -B) to a load (SP) via the switching section; a load current feedback circuit that is configured to negatively feed back the current flowing in the load (SP) to the input section of the class D amplification section ; and a filter current feedback circuit , different from said load current feedback circuit , said filter current feedback circuit being configured to negatively feed back a current flowing in a filter interposed between the output stage of the class D amplification section and the load (SP) to the input section of the class D amplification section ; wherein the load current feedback circuit includes a first connection section comprising a first resistor and a first capacitor which are connected in series, said first connection section thus being configured to adjust frequency characteristics of a feedback amount of the negative feedback performed via the load current feedback circuit ; and wherein the filter current feedback circuit includes a second connection section comprising a second resistor and a second capacitor which are connected in series, said second connection section thus being configured to adjust frequency characteristics of a feedback amount of the negative feedback performed via the filter current feedback circuit . <EOS>