Sony WALKMAN NWZ-A15 Help Manual page 367

Help Guide
Troubleshooting
Digital Media Player
NWZ-A15/A17
Vocals are not suppressed even when [Dance/Karaoke/Language] is set to [Maximum Karaoke Mode] or
[Minimum Karaoke Mode].
Even when [Dance/Karaoke/Language] is set to [Maximum Karaoke Mode] or [Minimum Karaoke Mode], the vocal
suppression effects differ depending on the effects (sound effects) already used in the song itself. For this reason,
there are some songs in which the vocals are barely suppressed, or in which the opposite effects occur.
Related Topic
Using the karaoke function
Customizing sound quality settings
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