Patent ID: 8494183

Claim:
An audio processing apparatus comprising: a first amplification section for amplifying an expansion left audio signal whish is one of an outer left audio signal, an upper left audio signal and a center left audio signal, or a left audio signal for Bi-Amp; a second amplification section for amplifying an expansion right audio signal whish is one of an outer right audio signal, an upper right audio signal and a center right audio signal, or a right audio signal for Bi-Amp; a third amplification section for amplifying a surround back left audio signal; a fourth amplification section for amplifying a surround back right audio signal; a first speaker terminal that outputs the expansion left audio signal or the left audio signal for Bi-Amp; a second speaker terminal that outputs the expansion right audio signal or the right audio signal for Bi-Amp; a third speaker terminal that outputs the surround back left audio signal; a fourth speaker terminal that outputs the surround back right audio signal; and switching section for causing the first amplification section to amplify the expansion left audio signal and supply the amplified expansion left audio signal to the first speaker terminal and causing the second amplification section to amplify the expansion right audio signal and supply the amplified expansion right audio signal to the second speaker terminal when the Bi-Amp function is not used; and causing the first amplification section to amplify the left audio signal for Bi-Amp and supply the amplified left audio signal for Bi-Amp to the first speaker terminal and causing the second amplification section to amplify the right audio signal for Bi-Amp and supply the amplified right audio signal for Bi-Amp to the second speaker terminal when the Bi-Amp function is used.