A temperature control apparatus used with an audio amp to prevent the audio amp from overheating and noise from being generated by effectively controlling a cooling fan of the audio amp includes a power supply to supply an electrical power, a power amp to amplify an input audio signal using the electrical power supplied from the power supply, a signal detector to detect the amount of the current flowing from the power supply during a predetermined time, a temperature sensor to sense a temperature over a predetermined level generated from the power amp, and a micro controller to control a cooling fan according to the amount of current output from the signal detector and/or the temperature sensed by the temperature sensor.