Patent ID: 7783059

Claim:
An acoustic device comprising: a plurality of sound sources; a first output unit for outputting sound based on sound signals from the sound sources, the first output unit comprising front speakers; a first operation unit which is capable of turning on a power supply to the acoustic device; a second output unit for outputting sound based on sound signals from the sound sources; a second operation unit which is capable of turning on the power supply to the acoustic device; a mode setting unit setting either one of a first mode, in which the sound based on the sound signals from one of the sound sources are output from the first output unit, and a second mode, in which while the sound based on the sound signals from one of the sound sources are being output from the first output unit, the sound based on the sound signals from another sound source are output from the second output unit; and a control unit for controlling the mode setting unit to set the first mode or the second mode when the power supply to the acoustic device is turned on by the first operation unit and controlling the mode setting unit to set the second mode and controlling the front speakers of the first output unit to be in a muted state when the power supply to the acoustic device is turned on by the second operation unit.