Audio amplifier and audio power amplifier

An audio amplifier comprising a first circuit unit and a second circuit unit that are complementary to each other, wherein

• each of the first and second circuit units includes:
• a first emitter follower connected to a first input terminal of the audio amplifier;
• a second emitter follower connected to a second input terminal of the audio amplifier;
• a main transistor of which a base is connected to an output path of the first emitter follower, of which an emitter is connected to an output path of the second emitter follower, and of which a collector outputs a signal;
• a first resistor and a second resistor series-connected between the output path of the first emitter follower and a DC voltage source;
• and
• a constant voltage generator connected to a series-connection point between the first and second resistors,
• a path leading to a collector of each transistor configuring the first and second emitter followers in the first circuit unit is connected to the series-connection point in the second circuit unit,
• a path leading to a collector of each transistor configuring the first and second emitter followers in the second circuit unit is connected to the series-connection point in the first circuit unit, and
• the output path of the first emitter follower in the first circuit unit and the output path of the first emitter follower in the second circuit unit are provided with a bias setting circuit for the first and second circuit units.