Sony ILCA-99M2 Manual page 322

Reset:
Resets the audio recording level to the default setting.
Hint
When you record audio movies with loud volumes, set [Audio Rec Level] to a lower sound level.
Doing so enables you to record more realistic audio. When you record audio movies with lower
volumes, set [Audio Rec Level] to a greater sound level to make the sound easier to hear.
Note
Regardless of the [Audio Rec Level] settings, the limiter always operates.
[Audio Rec Level] is available only when the shooting mode is set to movie mode.
[Audio Rec Level] is unavailable during slow-motion/quick-motion shooting.
The [Audio Rec Level] settings are applied for both the internal microphone and the
(microphone) terminal input.
[337] List of MENU items
Audio Level Display
Sets whether to display the audio level on the screen.
MENU →
1
Menu item details
On:
Displays the audio level.
Off:
Does not display the audio level.
Note
The audio level is not displayed in the following situations:
When [Audio Recording] is set to [Off].
When DISP (Display Setting) is set to [No Disp. Info.].
During slow-motion/quick-motion shooting
The audio level is also displayed while shooting stand-by in movie recording mode.
Camera Settings2
(Camera Settings2) → [Audio Level Display] → desired setting.