Classe Audio CP-500 - V2.4 Owner's Manual page 13

6 Volume Knob
The large knob on the right side of the front panel of the CP-500 is used to
control the volume of the system.
The volume is raised or lowered in precise 0.5dB increments throughout the range
of the control most likely to be used while listening to music.
At extremely low volumes, the step size is increased somewhat to make it easier to
move quickly between extremely low and normal listening levels.
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