Abbingdon Music Research AM-77 Reference Class - Manual (Page 17)

17
Once powered OFF:
always wait 30
seconds before
switching on again
Section 3 - Operation
3.1 Power On/Off
Press and release the ‘POWER’ rocker switch (R12) at the rear of the AM-77 to switch on the mains power.
To switch the mains power OFF, press again and release. Always WAIT at least 30 seconds before switching
ON again. This is to enable the OptiMains® circuit to shutdown properly.
The display will light up to indicate the unit is switched on and ready for use. This should take just under 1 minute
as the OptiMains® circuit is verifying and the AM-77 is warming up.
3.2 Volume Adjustment
Adjust the volume up or down to attain a comfortable level for listening.
While adjusting volume levels, there may be a very minor “click” from AM-77 and the speakers. This is the normal
operation of the relays within the OptiLevel® direct path precision volume control.
3.3 Rear Inputs
At the rear of the AM-77, there are 5 inputs for the connection of source components.
Input 1 (R6) is of most consequence because first, while all 5 inputs can be connected via RCA only, Input 1 also
allows for the optional connection of XLR connectors.
Second, in other configurations where the AM-77 is used in single-channel mode, all other inputs are defeated.
Signal input is allowed only through the LEFT channel (white) of Input 1: via XLR or RCA (Please refer to Section
5 - System Configurations for a detailed explanation).
Beware: prolonged
listening at high
volume levels is likely
to damage your
hearing