Zoom H4n Pro Operation Manual page 80

The metronome has convenient functions such as a pre-count.
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079
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ing recording, playback or both. This setting
must be made before recording or playback.
Select the condition
OFF
---Recording/playback
---Only when recording
---Only when playback
Set the count used before recording starts.
This cannot be set if PRE REC or AUTO REC
is ON.
Set the count to OFF, 1-8
beats or SPECIAL.
Count of SPECIAL