Switching the A38 on
e POWER button switches the unit on and o; 
alternatively, the unit can be switched in and out of 
stand-by mode by pressing the 
2
 button on the remote 
control handset.
e power light (next to the ‘A38 Integrated Amplier’ 
text) indicates the state of the amplier:
1.  A red light means that the amplier is in stand-by 
mode;
2.  When you switch your amplier on, the power 
light glows amber for a few seconds; during this 
time the outputs are muted;
3.  e light changes to green when the amplier is 
ready for use.
e power light may ash if a fault has occurred – 
the fault type is shown on the display. See page 17, 
‘Troubleshooting’, for help in resolving fault situations. 
If the fault cannot be cleared, unplug your amplier and 
contact your Arcam dealer.
Changing the volume
Use the control knob to change the volume. Turn the 
knob clockwise to increase the volume, anti-clockwise 
to reduce it.
e output of the A38 can be muted by pressing MUTE. 
Press MUTE for a second time (or change the volume) to 
cancel the mute.
SP1 and SP2
ese buttons allow you to switch the main speakers 
(connected to the lower set of speaker terminals) and 
secondary speakers (connected to the upper set of 
speaker terminals) on and o. 
e light above each button glows if the corresponding 
speakers are currently selected. If you have connected 
the A38 to the speakers using the single-wired 
conguration described on page 9, then the SP1 light 
should be illuminated; if you have used the bi-wiring 
conguration described on page 9, both SP1 and SP2 
must be switched on. Note that when both lights are out 
then the amplier will appear not to work, as all speakers 
are switched o.
When listening to ‘loud’ inputs, such as CDs, the 
amplier may reach its full power before the display 
reads Maximum, in contrast, lower-level inputs, such 
as tuners, will sound quieter for the same volume level 
shown. To compensate for this, the input levels of each 
source may be adjusted. is can be done using the A38 
setup menu (see page 11).
A38  
operation
Selecting an audio source
A source-selection button is used to select the source 
that is connected to the input corresponding to the 
button. A light above the relevant button indicates which 
input is selected and this information is also shown on 
the display.
Listening using headphones
e headphones socket (PHONES) accepts headphones 
with an impedance rating between 8Ω and 2kΩ, tted 
with a 6.5mm stereo jack plug.
e headphones socket is always active, unless the 
volume has been muted.
Balance
In addition to the A38 setup menu (see page 11), you 
can also control le-right stereo balance directly from 
the BALANCE button on the front-panel.
Display
e DISPLAY front panel button changes the display 
brightness. ere are three brightness levels: ‘on’, 
‘dimmed’ and ‘o ’. If the A38 is switched o while the 
display is set to ‘o’, the display is set to ‘dimmed’ when 
the A38 is switched on again.
Recording an audio source
e A38 allows listening to and recording from the 
same source, or listening to one source whilst recording 
another. e signal to be recorded is sent to both the AV 
and PVR output sockets.
Selecting the source for recording
e recording outputs can be congured in two ways:
1.  To allow recording of the source being listened to;
2.  To allow recording of a particular (specied) 
source, regardless of what is being listened to.
To record the source being listened to, press the RECORD 
button repeatedly until the display shows  ‘Record 
source’. Aer a few seconds, the display reverts to 
showing the volume level, and you are ready to record. 
In this conguration, selecting a dierent input changes 
the source that is routed to the recording outputs. 
To record one source whilst listening to another, press 
RECORD until the display shows ‘Record’ followed by 
the name of an input (e.g., Aux, CD, Tuner, etc.). Now 
press the source-selector button on the front-panel for 
the source you wish to record. Your selection is shown 
on the display for a few seconds, aer which the display 
reverts to showing the volume level. You are now ready 
to record.
Pressing a dierent source-selection button changes the 
source that you are listening to, but does not alter the 
source that is routed to the recording outputs.