Denon DN-500AV Owner's Manual page 56

Various memory functions
n Personal memory plus function
This function sets the settings (input mode, surround mode, HDMI
output mode, audio delay etc.) last selected for the individual input
sources.
The surround parameters, tone settings and the volumes of the
different speakers are stored for the individual surround modes.
n Last function memory
This function stores the settings which were made before going
into the standby mode.
When the power is turned back on, the settings are restored.
BD
Convenient functions
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