An audio system has a plurality of capabilities for processing an audio signal
with visual indication of the capabilities by labels. In the audio system, an audio
device such as amplifier and effector selectively provides the capabilities of
processing an audio signal. A first storage device provisionally stores display
data representative of labels corresponding to the capabilities. An editing device
is operated to edit the display data so that the labels can be customized in association
with the capabilities. A second storage device stores the edited display data.
A selecting device selects one of the capabilities. A display device displays the
label corresponding to the selected capability according to the display data stored
in either of the first storage device and the second storage device.
