You would like to change the EQ audio settings on your Classic C-D6?
To reach the EQ options on the Classic C-D6, press the "EQ" button on the remote control. The display will change to show the current mode selected.
You can toggle through the different modes by repeatedly pressing the "EQ" button.
The different modes are:
Dynamic - Deep bass extension - dynamic vocals and instruments
Comfort - Easy listening all day
Neutral - Sound as close to the source material