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18
If you adjust the volume while mute is engaged, the preamplifier
will adjust its volume from the muted level, and disengage the mute
function. This approach prevents an unpleasant surprise when,
having increased the volume while muted, someone un-mutes the
system.
The factory default setting of the mute circuit is -20 dB. (See “Cus-
tomizing Your Nº383” for information on changing the factory de-
fault setting.)
11 Standby Button
The standby button toggles the Nº383 between normal opera-
tion and standby, wherein the display is turned off, the outputs are
disconnected, and all controls are inoperable. All critical circuitry
remains powered-up during standby to ensure immediate, opti-
mal performance when you are ready to listen to music.
The LED above the standby button will blink slowly when the
Nº383 is in standby, indicating that power is still being provided
to the unit.
sleep timer The standby button includes a special function that allows you
to use the Nº383 as the heart of one of the world’s most exotic
sleep timers. By pressing and holding the standby button for
several seconds, you will see the display change to SLEEP -OFF-;
subsequent clicks of standby will cycle through a list of sleep
timer settings ranging from OFF through four hours, in 30
minute increments. Having selected the setting you want to use,
simply allow the Nº383 to “time out” for the display to return to
normal.
Setting the sleep timer to 1hr 0min for example, will cause the
Nº383 to enter standby after an hour, at which point it will also
return the sleep timer’s status to OFF (so as to avoid uninten-
tional interruptions of your music at a later time). You may use
the sleep timer function as often as you like, but you will have to
set it as you want it to behave each time. The default setting is
OFF.