A display device comprising: a display component; an output component configured to output a first signal having guidance information and a second signal having audio information pertaining to content; a setting component configured to perform volume setting; and a controller configured to control output levels of the first signal and the second signal, the output levels of the first signal and the second signal being output volume values of the first signal and the second signal, wherein the controller is configured to set the output level of the first signal to a value that is greater than or equal to the output level of the second signal, configured to set the output level of the first signal to a value greater than zero when the output level of the second signal is zero, and configured to control the output levels of the first signal and the second signal such that, over the entire range of the volume setting value, the output levels of the first signal and the second signal increase substantially linearly as the volume setting value increases and decrease substantially linearly as the volume setting value decreases, characterized in that the controller is configured to control the output levels of the first signal and the second signal such that, over the entire range of the volume setting value, the increase in the output level of the first signal is kept lower than the increase in the output level of the second signal during an increase in the volume setting value and the decrease in the output level of the first signal is kept lower than the decrease in the output level of the second signal during a decrease in the volume setting value. a display component; an output component configured to output a first signal having guidance information and a second signal having audio information pertaining to content; a setting component configured to perform volume setting; and a controller configured to control output levels of the first signal and the second signal, the output levels of the first signal and the second signal being output volume values of the first signal and the second signal, wherein the controller is configured to set the output level of the first signal to a value that is greater than or equal to the output level of the second signal, configured to set the output level of the first signal to a value greater than zero when the output level of the second signal is zero, and configured to control the output levels of the first signal and the second signal such that, over the entire range of the volume setting value, the output levels of the first signal and the second signal increase substantially linearly as the volume setting value increases and decrease substantially linearly as the volume setting value decreases, characterized in that the controller is configured to control the output levels of the first signal and the second signal such that, over the entire range of the volume setting value, the increase in the output level of the first signal is kept lower than the increase in the output level of the second signal during an increase in the volume setting value and the decrease in the output level of the first signal is kept lower than the decrease in the output level of the second signal during a decrease in the volume setting value.