Olympus DS-30 Instructions Manual page 88

Playing
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Playback Through Earphone
An earphone can be connected to the EAR jack of the recorder for
listening.
➥
When the earphone is used, the recorder speaker will be
switched-off.
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Notes
• To avoid irritation to the ear, insert the earphone after turning down the volume
level.
• When you listen with the earphone during playback, do not raise the volume
too much. It may cause hearing impairment and decrease in hearing ability.