Simaudio 850P Preamplifier - Manual (Page 17)

850P Reference Dual-Mono Preamplifier
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connectors are two 12 Volt trigger outputs, each on
a 1/8” mini-jack. Finally, on the far right side are the
“AC Fuse” socket cover; the power “main switch”;
and the “AC Input” IEC receptacle for the power
cord. All rear panel connectors have been chosen
because they provide the best possible connections
for your unit. A poor contact will degrade the signal
substantially, and plugs and sockets should all look
clean and free of dirt and corrosion. The easiest way
to clean them is to remove the cables from their
sockets and push them back in again. This
procedure requires that your preamplifier and the
rest of your components be completely turned off.
SimLink™
The SimLink™ provides communication features
between various MOON components. For example,
if you were to connect the 750D DAC/CD Transport
to the 850P Preamplifier via the SimLink™, pressing
the X (play) button on the 750D would cause the
preamplifier automatically switch to it’s designated
input for the CD Player. You must assign the
input with the name “750D” for this feature to
work . If you were to adjust the brightness level of
the large digital display window using the “Display”
button on the 850P, the brightness level of the
750D’s display will automatically adjust to the same
brightness level as that of the 850P. Conversely,
since the SimLink™ is a true bi-directional
connection, adjusting the 750D’s brightness level
will automatically adjust the brightness level of the
850P.
A third feature of SimLink™ involves the “Standby”
function. By pressing down and holding the
“Standby” button for 2 seconds on the 850P, all
other MOON components connected via the SimLink
will go into “Standby” mode along with the 850P.
The same logic applies when switching from
“Standby” to active mode.
The connection rules for the SimLink™ are very
basic. You must always connect the supplied cable
between one component’s “SimLink™ Out” jack and
another component’s “SimLink™ In” jack. If you
inadvertently connect the cable between either two
“SimLink™ In” or two “SimLink™ Out” jacks, the
SimLink™ communication feature will not function.
Also, there is no master component in a SimLink™
chain; no one particular component operates as the
main communications controller.
Operating the 850P
We recommend that you leave your MOON 850P
dual-mono preamplifier powered up at all times to
maintain optimal performance. In the event that
you plan to be away from your home for a few days,
powering off the preamplifier may not be a bad idea.
Once fully “broken-in”, please keep in mind that
your 850P will require several hours of playing time
before it reaches its peak performance after you’ve
powered it up again.
Turning on your MOON 850P for the first time
Prior to turning the preamplifier on for the first time,
make sure that every cable is properly connected to
avoid any problems. Flick the main rocker switch,
located on the rear panel of the controller, labeled
“POWER” to the ‘1’ (on) position to place your 850P
in to standby mode. Next, briefly press the push
button labeled “Standby” located on the front panel.
You will hear a very faint click sound confirming that
everything is in order. The blue LED’s on both front
panels will illuminate, indicating that the 850P is
now powered up and ready for use.
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On and Off Sequence
To avoid having any annoying noises (ie. “thumps”
and “pops”) emanate from your speakers when
powering your 850P on or off, you should always
power up your 850P preamplifier before powering
up your amplifier. As well, always power down your
850P after powering down your amplifier.