Trigon Monolog Owner's Manual page 11

[ 8 ] LED Display TRIGGER and 10V DC
This indicates whether one of the available automatic power options has been
enabled. The desired mode can be selected from the pushbutton labelled "AUTO"
(13) located on the rear panel.
Monolog
With TRIGGER mode selected, the amplifier will turn on as soon as an
audio signal is present at the input terminals. At very low sound levels it may happen
that the signal cannot be recognized. In this case it will be necessary to increase the
volume setting at the preamplifier.
Monolog
In 10V DC mode the amplifier will turn on when DC (approx. +4V to
+10V) is present at the REMOTE 10V DC (21) terminal on the rear panel. Such DC
trigger outputs are featured on some preamplifiers. This option offers the advantage
that power amplifiers will be turned on or off whenever the preamplifier is switched on
or off.
Note: If one of the AUTO power options is selected, the main power switch on the
Monolog
amplifier has to remain in the ON position.