Subaru 2005 Legacy - Manual (Page 313)

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Audio
! MUTE button
Press this button if you wish to immediately cut the vol-
ume to zero.
The audio display will show “MUTE”.
Precautions to observe when han-
dling a compact disc
Use only compact discs (CDs, CD-Rs and CD-RWs)
that have the mark shown below. Also, some compact
discs cannot be played.
UB5560CA
UB5221AA