Arcam Delta 90.2 - Manual (Page 6)

Front panel controls
Figure 2
Power switch
The Delta 90.2 is turned on by depressing the power switch.
The small rectangular LED (light emitting diode) above the switch will
glow green. After several seconds you may hear a gentle click from inside
the amplifier. This indicates that the speaker protection relay has been
released and that the amplifier is ready for use. To turn the unit off
depress the power switch again so that it unlatches. The green LED,
which indicates that the dc power supplies within the amplifier are
operating, will continue to glow for a short time after the unit has been
switched off as the internal power supplies discharge.
Note
The Delta 90.2 will play music within seconds of switching
on. However, in common with other audiophile products, the internal
circuits take some time to stabilise fully and the very best sound quality
may not be obtained until the amplifier has had a reasonable time
(possibly up to an hour or two) to warm up.
Input selection
Input selection on the Delta 90.2 is divided into separate
'listen' and 'record' functions, controlled by two rotary knobs. This
facility allows one input to be listened to whilst another is being
recorded.
Listen
Select the input you wish to listen to by turning the knob to
the desired point. The selected input should then be heard through your
loudspeakers and/or headphones, with its level adjusted by the volume
control on the front panel.
Record
The 'record' control is used to select the source required for
your tape recorder. See page 8 for full details on tape recording and
dubbing. The signals sent to the tape recorders are not affected by any
of the amplifier's other front panel controls.