Sony WALKMAN NWZ-A15 Help Manual page 316

(*4)
LDAC is available when you have updated the system software of your Walkman to version 1.10 or later.
(*5)
Available capacity may vary. A portion of the memory is used for data management functions.
LDAC and LDAC logo are trademarks or registered trademarks of Sony Corporation.
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Copyright 2014 Sony Corporation
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