Boss BR-1200CD Owner's Manual page 96

Registering and recalling mixer settings (Scene)
• When playback reaches a location where a marker
has been set, the scene assigned to the marker is
called up automatically, and the settings change to
those recorded in the scene, including the track EQ
and effects patch parameters.
• Be sure to note that application of the effects in the
performance may be delayed from several hundred
milliseconds to one second from the point at which
the marker is set.
• Patch switching will be possible for similar
algorithm of effects (for example, patches from
"COSM OD GUITAR AMP"), but not for different
types. In addition, this type of change will not be
possible for different insert effect connections (p.
123).
• Depending on the sounds used in a performance
recorded on a track, noise may be audible when the
EQ is being adjusted.
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