Thank you for selecting the MOON P-5 Dual-Mono preamplifier as a part of your hi-fi reproduction
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 among the finest two-channel preamplifiers available. We
have been building high performance audio equipment for over 20 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 t rue Dual-Mono design, whereby each of the two channels’ audio circuitry
operates completely independent of the other.
The performance of your P-5 will continue to improve during the first six weeks of use. This is the
result of a “break-in” period required for the numerous high quality electronic parts used throughout
this amplifier.
Please read this manual thoroughly to acquaint yourself with this product’s features prior to using it.
We hope you enjoy listening to the MOON P-5 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 reproducing these elusive qualities.
Your MOON P-5 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:
A custom proprietary toroidal transformer design with lower magnetic, electrical and thermal loss,
yielding an improved power transfer and lower regulation factor, resulting in increased current speed and
better dynamics.
Fully balanced differential circuitry throughout the entire preamplifier.
An oversized power supply housed in a separate matching chassis.
Eight stages of DC voltage regulation.
An exceptionally short, capac itor-free signal path measuring only nine inches in length for a faster
transient response.
Open-loop zero feedback circuit topology.
Proprietary designed “RGB” fully discrete “shunt to ground” gain stage employing a precision relay
network which uses only one metal film resistor at any given time (rather than a series of resistors), for the
audio signal to pass through, resulting in a gain control that doesn't degrade sonic performance regardless
of the selected setting.
J-FET input devices and MOSFET output devices.
One single-ended audio input which functions as a “pass-through”, which bypasses the gain stage to
accommodate a component such as a home-theater processor, whose own volume control is used instead.
Extremely rigid chassis construction to minimize the effects of external vibrations.
Accurate matching of the very finest high quality electronic components.
A symmetrical circuit design.
Pure copper circuit board tracings with extremely low impedance characteristics.
Designed to be powered up at all times for optimal performance.
Low operating temperature for a longer than normal life expectancy.
The MOON P-5 Dual-Mono preamplifier and t he MOON PS-5 power supply should both be removed
from their box with care.
The following accessories should be included inside the box with your preamplifier:
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AC power cable
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‘FRM’ Full Function remote control with three ‘AAA’ batteries (USA and Canada only)
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8 Pointed screw-on tips (for the preamplifier’s and power supply’s legs)
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This owner’s manual
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Warranty card (USA and Canada only)
As soon as the preamplifier and its power supply are safely removed from its box and placed down,
perform a thorough physical inspection and report any physical damage to your dealer immediately.
We suggest that you keep the original packaging, and that it should be stored in a safe, dry place in
case you’re required to transport the preamplifier. The customized packaging is specially designed to
protect the preamplifier from potential damage that can arise when shipping such a product.
To reduce the risk of fire or electric shock, do not expose this product to rain or
moisture. Do not attempt to “lift the ground” by removing the ground pin from
the AC cable. Make sure that your household electr ical wiring supports proper
AC grounding techniques before plugging in this product. Keep the heat sinks
and top cover free of dust to allow for proper heat dissipation. Never expose
this product to extreme temperatures. Always connect the audio signal path
cables prior to connecting the AC mains.
CAUTION! No user-serviceable parts inside. Do not remove top cover, as severe electrical
shock may result.
IMPORTANT! Make sure that your local AC voltage complies with the unit’s label. Damage
caused by plugging thus amplifier into an AC receptacle of the wrong voltage will
not be covered by warranty.