VTL S-400 II series Owner's Manual page 50

If using a central remote control system connected to the RS-232 port then issue the Power off
command.
The unit immediately begins power down and displays ---- and discharges high voltage power
supplies. Last used modes are saved for next power up
RS-232 command: >POWER OFF
To avoid unplanned power ups turn the rear panel power rocker switch to OFF position if you don't plan to
use the amplifier for an extended period of time.
S-400 Amplifier Owner's Manual
VTL
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