Sony DVW-707/707P Operation Manual page 27

qs MONITOR volume control
This control adjusts the speaker or earphone sound volume, excluding
the alarm sound. At the minimum position, no sound can be heard.
MONITOR
CH-1
MIX
CH-2
Minimum
ALARM volume control
Minimum
MONITOR volume control
Chapter 2 Locations and Functions of Parts and Controls
Maximum
Maximum
2
2-11