Some sources even 5.1 Dolby Pro Logic audio device according to the invention, separated by a channel over which output is, by having a digital input terminal receives receive the input digital signal from an apparatus connected to the digital input terminal, enter the external input signal, a stereo or mono signal, compression processing and decoding the received signal to generate an audio signal of 6 channels to be transmitted over a single serial data line IC 1; Of the left and right surround, and center speakers are connectable terminal by the 6-channel audio signals from the left and right surround, and by a center signal processing an analog signal the left and right surround, and center speaker output, and six channels of the output from the IC 1 audio signal having a main IC 2 that sends out the left and right signal and woofer signal; And main left and right, and subwoofer speakers to the main left and right signals and woofer signal outputted from the IC 2 by having a connectable terminal processes the analog signal output to the main left and right, and subwoofer speaker, and by having an SIF terminal from a device connected to the SIF terminal receiving a stereo or mono signal is provided to the IC 1, and includes the IC 3 to supply an external input signal is provided with a SCART terminal input through the SCART terminal to the IC 1.
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