Simaudio Neo 350P Preamplifier - Manual (Page 13)

350P Preamplifier
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13
Connect the supplied AC power cable to the IEC
receptacle, located on the preamplifier’s rear panel.
Ensure that the AC wall outlet you use has a
functioning ground. For the best sonic performance,
it is preferable that you plug your 350P directly into
a dedicated AC outlet and avoid using an extension
cord. If you have the time and willingness, consider
installing a superior quality AC wall outlet such as a
hospital grade Hubbell*.
* Please speak with your MOON Authorized Retailer about
the benefits of high quality cables for your system, and
superior quality AC wall outlet.
Balanced Operation
The Nēo 350P includes two (2) balanced line-level
inputs and one (1) balanced preamplifier output on
XLR connectors. The “B1” and “B2” inputs use a fully
balanced differential circuit, intended for use with
source components that output a fully balanced
differential signal. The Nēo 350P balanced inputs
and outputs takes full advantage of the benefits of
balanced circuitry:
When using an unbalanced interconnect, the audio
signal runs through both the center wire and the
shield/ground wire. Any noise picked up by this
interconnect (ie. nearby magnetic fields such as an
AC power cord) will be reproduced by both the
preamplifier and amplifier, then heard through the
loudspeakers. Conversely, a balanced interconnect
has three separate conductors; one for the ground
and two for the actual signal. These two signals are
identical except that one is 180 degrees out of
phase with the other. For example, when one
conductor is carrying a signal of +5 Volts, the other
will be carrying a signal of –5 Volts. When these
two inverted signals on a balanced line are output
from the Nēo 350P, any noise picked up by the
interconnect will be eliminated since a differential
circuit amplifies only the difference between these
two signals: Noise on a balanced interconnect will be
equal on both conductors and therefore cancel out.
SimLink™
The SimLink™ provides communication features
between various MOON components. For example,
if you were to connect the Nēo 260D to the 350P
via the SimLink™, pressing the X (play) button on
the Nēo 260D will cause the 350P to automatically
switch to the input labeled ‘CD’. You can change this
default setting as follows: Select the input that you
want as the new default for CD, then press and hold
the ◄ INPUT (left) button until the front panel
display begins to flash on and off. Another feature of
SimLink™ involves the “Standby” function. By
pressing down and holding the “Standby” button for
2 seconds on the either the Nēo 260D or 350P,
both units will go into “Standby” mode. The same
logic applies when switching from “Standby” to
active mode.
If you are using the “MiND” Music Streamer and an
external digital-to-analog converter (DAC), you must
make a SimLink™ connection between the “MiND”s
SimLink™ out and the 350P’s SimLink™ in. The ‘A1’
input is the default input for your external DAC’s
analog outputs; When you press the X (play) button
on the “MiND” App, the 350P will automatically
switch to the input labeled ‘A1’. If your 350P
includes the “DAC” option, then the default input for
the MiND is the ‘D2” input; When you press the X
(play) button on the “MiND” App, the 350P will
automatically switch to the input labeled ‘D2’. You
can change these default settings for the “MiND” as
follows: Select the input that you want as the new
default for “MiND”, then press and hold the “MP”
button until the front panel display begins to flash
on and off.
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 may not function.
Also, there is no master component in a SimLink™
chain; no one particular component operates as the
main communications controller.