Sony STR-AZ7000ES Help Manual page 259

Help Guide
Multi Channel AV Receiver
STR-AZ7000ES/STR-AZ5000ES/STR-AZ3000ES
Limiting the volume for the main zone (Main Max Volume)
You can limit the maximum volume level output to the main zone.
Select [Setup] - [Zone Settings] from the home menu.
1
Select [Main Max Volume].
2
3 Adjust the volume level.
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