Meridian Audio Meridian two channel power amplifer 559 - Manual (Page 16)

Setting up the stereo power amplifier
11
Standby
Once set up, the stereo power amplifier can be left in standby as
it consumes negligible power in this mode.
To bring the amplifier out of standby press the button on the
front panel. Alternatively, the 559 can be brought out of standby
automatically using the TRIGGER INPUT; see below.
If you are not going to use the stereo power amplifier for a
period of several days you should switch the unit completely off,
at the back panel, and disconnect it from the AC power supply.
Trigger input
The TRIGGER INPUT can be used to bring the stereo power
amplifier out of standby by applying a signal from a control unit.
The trigger input should be an AC or DC signal of between 5 and
30V. Suitable trigger signals are provided by the Meridian 561,
562, 800, and 861.