PlayStation Knowledge Center: PSP
Hardware / System
Connecting to Internet
Memory Stick Duo™
Movies / Video
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NOTE: Tone can only be adjusted when using headphones during audio
feedback. The tone setting is temporarily set to Off during gameplay.
NOTE: In some UMD™ videos,
playback conditions might be determined in advance and
the volume options described here may not be available.
NOTE: The volume icon is only available during UMD™
video playback; it is not available if you are viewing a video file
stored on your Memory Card Duo™.
AVLS can be used to limit the maximum volume to prevent possible danger from
being unable to hear what is going on around you when using headphones, as
well as to prevent sound from being heard from the headphones by others.