Audio Research DAC9, User Manual, Page: 11 / 32

Operation
11
Start-Up
• Secure all rear-panel connections between
DAC9, preamplifier, and input sources.
• Plug three-prong power cord from
rear of chassis into grounded A.C. wall
outlet. The Power switch defaults to ’off’
when the unit is plugged into a power
receptacle.
• Press power switch (either on the remote
or front panel). The converter will begin
the warm-up sequence, which lasts
approximately 45 seconds, during which
‘MUTE’ will flash on the display. After the
warm-up sequence is complete, the unit
will be muted. Depress the front panel
‘MUTE’ button or the Mute button on the
remote to initiate normal operation. You
may depress the Mute button prior to the
unit completing the warm-up cycle;
‘MUTE
OFF’ will flash on the display until the
warm-up cycle is complete.
• Select input source and adjust the volume
on your preamplifier as necessary.
Note
The 45 second warm-up time is required
for the circuit to come to an appropriate
operating temperature, as well as for the
power supply to stabilize. This is a normal
function of the DAC9.
Shut-Down
• Activate ‘MUTE’ function.
• Turn off power amplifier(s).
• Turn off preamplifier.
• Press Power switch to ‘off’ on DAC9.
• Turn off input sources.
Note
The DAC9 should be turned on before
the preamplifier or amplifier in your
system. If the DAC9 is turned on after
the preamplifier and amplifier, it will
amplify any extraneous turn-on noises
the DAC9 might generate, which could
potentially damage the loudspeakers.
Good operating practice dictates that
the amplifier should be turned on last,
and turned off first in an audio system.
Break-in
All quality stereo equipment benefits from
a break-in period; during this time, the
various components, wiring and solder
connections change as electrical signals
pass through them. While your DAC9
will sound fantastic out of the box, it
will only improve with continued use.