Audio Research reference dac, User Manual

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15
Front Panel Rotary Controls
The Reference DAC has two microprocessor-
driven rotary controls.
The rotary control on the left adjusts Volume
(output level) up or down for both L and R
channels. Volume control is also selectable
via Vol UP and Vol DN buttons on the
remote control. Volume adjustment is
indicated in the display window by numeric
digits on 0–103 scale.
Do not turn volume up beyond normal
listening levels when ‘Mute’ is engaged to
avoid unexpected or possibly damaging
sound levels.
The rotary control (on the right) selects any
of the inputs on the Reference DAC, and is
also a navigator through the settings and
front panel interface.
Front Panel and Remote Control Buttons
Power On/Off:
Supplies power from A.C.
wall outlet to DAC; indicated by active
display window.
After pressing the Power button to turn
on unit, the display will remain black for
approximately 8 seconds, after which the
Reference DAC splash screen will appear.
Once the splash screen is gone, the main
menu page is displayed, and a countdown
timer will show the seconds until the unit
is ready for operation. After countdown,
the unit will be in Mute.
Left/Right Arrows (< >):
Used during
menu navigation. The Right arrow (>) will
advance the Reference DAC to the next
screen or selection, and the Left arrow (<)
will go back one screen or menu selection.
Function also on remote control (Left and
Right arrows on navigation pad).
Operation
Mute:
When activated, electrically mutes
all output of the DAC; indicated by ‘Mute’
in display window. This control should be
activated before switching inputs, changing
connections or shutting down your audio
system to help protect your amplifier and
speakers from unexpected signal pulses.
When deactivated, ‘Mute’ disappears
from the display window allowing normal
operation. Function also on remote
control.
The Reference DAC also has automatic
muting to help protects system
components during A.C. power
interruptions or low line voltage. When
sensing these conditions, the preamp
automatically goes into ‘Mute’ and disables
all outputs. The Reference DAC will reset
itself and begin the initial startup sequence
as described under ‘Power On/Off’.
Note that automatic muting is only designed
to protect against power line interruptions
or severe voltage drop. It will not mute in
the event of subsonic transmissions from
a faulty input source, amplifier failure or
speaker malfunction.
Select: Pressing the Select button engages
the highlighted input on the screen, or
advances the Reference DAC to the next
screen when using the settings menus. It
also is used to select folders and tracks
when using an i-device or media server,
or stations for the internet radio tuner.
Function also on remote control (center
button of navigation pad).
Exit: Toggles the Reference DAC from the
current screen to the main menu/input
selection screen.