| 摘要 |
Disclosed is an audio device wherein: values of currents flowing in output terminals of amplifying circuits (4a, 4b) are compared with each other when same phase and opposite phase detection signals are outputted to the amplifying circuits (4a, 4b), respectively; and on the basis of results of the comparison, whether a subwoofer (3) is connected or not is determined on the basis of determination data obtained by associating magnitude relationship of the values of the currents with whether the subwoofer (3) is connected or not with respect to the output terminals of the amplifying circuits (4a, 4b), said currents flowing in the output terminals of the amplifying circuits (4a, 4b) when the same phase and opposite phase detection signals are outputted to the amplifying circuits (4a, 4b), respectively. |
