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Turning off the sound temporarily (Muting)
Press MUTE.
“ATT” appears on the display and the sound is muted.
To cancel mute, press MUTE again.
Setting the attenuation level when sound is muted
The attenuation level can be set at –20 dB, –40 dB, or –∞.
The factory default setting is –∞.
Press and hold MUTE for 2 seconds or longer.
The attenuation level will appear on the display.
Press MUTE.
The attenuation level setting value changes each time the button is pressed.
If not operated for 2 seconds, the current setting is saved and the display returns to normal.