Pioneer BDR-S13U-X Owner's Manual page 10

Features
— The audio side (non-DVD side) is not compliant with general physical CD
standards, and may not play in some cases.
— The Dual Disc DVD side can be played.
— For more details on Dual Disc specifications and standards, please contact the
distributor or vendor of the disc.
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BDR-S13U-X
En