Wisdom Audio Series SW-1 - Manual (Page 9)

9
Front Panel
LED Indicators
The Standby LED a glows amber when the unit is receiving power but
has been placed into Standby by the presence of a 12V “low” trigger signal
at the SW-1’s 12V trigger input.
If the SW-1 is in its normal Operating state, the Standby LED will be off
but the blue Channel indicator b will be on.
If both the amber and blue LEDs are off, no power is being supplied to the
amplifier.
Note that the normal operating state for the SW-1 is to be fully operational
when supplied with AC power. If you wish to toggle the SW-1 between
Operate and Standby, you may do so by means of a simple DC trigger.
(See DC Trigger In and Out, in the following section.)