An audio signal reproduction system and a method thereof are provided to reproduce audio signals wirelessly received from a reproducing device in order not to manage a battery. An audio signal reproduction system comprises: a reproducing device(30) generating power signals and wirelessly transmitting in an output device and packetting audio signals and wirelessly transmitting the audio signals with the output device; and the output device(14) producing constant voltage by using the received power signal and reproducing the received audio signals by using the generated constant voltage.
