740P Evolution
Series
6
Introduction
Thank you for selecting the
MOON 740P
Dual-Mono
preamplifier as a part of your music/cinema system. This
preamplifier has been designed to offer state-of-the-art
high-end performance in an elegant package, while
retaining all the sonic hallmarks on which Simaudio has
made its reputation. We have spared no effort to
ensure that it
is amongst the finest two-channel
preamplifier available. We have been building high-
performance audio equipment for over 30 years, and
the know-how gained through our cumulative
experience is an important reason why
MOON
preamplifiers are so musically satisfying.
Your new preamplifier is a true dual-mono design,
whereby each channel operates completely
independent of the other. The performance of your
740P
will continue to improve during the first 400 hours
of listening. This is the result of a “break-in” period
required for the numerous high quality electronic parts
used throughout this preamplifier.
Before setting up your new
MOON 740P
, we encourage
you to please read this manual thoroughly to properly
acquaint yourself with its features. We hope you enjoy
listening to the
MOON 740P
dual-mono preamplifier as
much as the pride we have taken in creating this fine
audio product. We understand the power and emotion
of music and build our products with the goal of
faithfully capturing these elusive qualities.
The information contained in this manual is subject to
change without notice. The most current version of this
manual is available on our official website at
http://www.simaudio.com
Your
MOON 740P
dual-mono preamplifier incorporates
many significant design features to achieve its “world-
class” level of performance. This is an abbreviated list of
the more important features:
An
oversized dual-mono power supply
using 2 toroidal
transformers in conjunction with 5 stages of DC voltage
regulation and extensive choke filtering.
4 stages of our newly developed
M-LoVo
MOON low voltage
DC regulation circuit
; a highly sophisticated circuit made up
of a clever combination of IC’s and discrete parts that is
virtually free of noise, yielding an exceptionally fast, precise,
and stable DC voltage. The result is a power supply with a
virtually unmeasureable noise floor.
SimLink
controller port allows for 2-way communications
between other compatible MOON Evolution Series
components.
M-eVOL2
volume control circuit using MDAC’s (operating in a
current steering R-2R configuration) which alter the audio
signal’s amplitude and yield no sonic degradation of the
signal regardless of the selected volume setting.
530 individual volume steps
in 1dB and 0.1dB increments.
M-Lock
circuit for “user selectable” maximum volume setting
lock-out for each line input.
Power supply voltage regulation includes
i
2
DCf
(Independent
Inductive DC Filtering); 1 inductor for each and every IC in the
audio circuit’s signal path – 24 stages in all.
Full unsolicited
RS-232
bidirectional feedback.
Gain offset
for each line input with a ±10dB range.
Each line input is fully configurable to be
“home theater
ready”
, where the volume control of the 740P is bypassed.
Four-layer PCB tracings
; The advantages include better
ground and power supply circuit layouts resulting in a much
shorter signal path and dramatically improved signal-to-noise
ratio.
Optional
external
power supply.
Ultra rigid chassis construction
to minimize the effects of
external vibrations.
