moon Evolution 820S User manual

Owner’s Manual
Evolution Series
820S
Power Supply

820S Power Supply
Important Safety Instructions
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves or another apparatus that produces
heat.
9. Do not defeat the safety purpose of the polarized or grounding type plug. A polarized plug has two blades with one
wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third
prong is provided for safety. If the provided plug does not fit into the outlet, consult an electrician for replacement of
the obsolete outlet.
10. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the
point where they exit from the apparatus. Unplug mains cord during transportation.
11. Only use attachments and accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer or sold with the
apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury
from tip over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any
way, such as when the power cord or plug has been damaged; liquid has been spilled or objects have fallen into the
apparatus; or the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
15. No naked flame sources, such as candles, should be placed on the apparatus.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
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820S Power Supply
Important Safety Instructions (cont’d)
The lightning flash with the arrowhead symbol, within an equilateral triangle, is
intended to alert the user to the presence of uninsulated “dangerous voltage” within
the product’s enclosure that may be of sufficient magnitude to constitute a risk of
electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the
presence of important operating and maintenance (servicing) instructions in the
literature accompanying the appliance.
Marking by the “CE” symbol (shown left) indicates compliance of this device with the
EMC (Electromagnetic Compatibility) and LVD (Low Voltage Directive) standards of the
European Community
Please read all instructions and precautions carefully and completely before
operating your Simaudio MOON 820S Power Supply.
1. ALWAYS disconnect your entire system from the AC mains before connecting or disconnecting any cables,
or when cleaning any component. To completely disconnect this apparatus from the AC mains, disconnect
the power suppy cord plug from the AC receptacle.
2. The MOON 820S must be terminated with a three-conductor AC mains power cord which includes a
protective earthing connection. To prevent shock hazard, all three connections must ALWAYS be used.
Connect the MOON 820S only to an AC source of the proper voltage; Both the shipping box and rear panel
serial number label will indicate the correct voltage. Use of any other voltage will likely damage the unit and
void the warranty
3. AC extension cords are NOT recommended for use with this product. The mains plug of the power supply
cord shall remain readily accessible.
4. NEVER use flammable or combustible chemicals for cleaning audio components.
5. NEVER operate the MOON 820S with any covers removed. There are no user-serviceable parts inside. An
open unit, especially if it is still connected to an AC source, presents a potentially lethal shock hazard. Refer
all questions to authorized service personnel only.
6. NEVER wet the inside of the MOON 820S with any liquid. If a liquid substance does enter your MOON 820S,
immediately disconnect it from the AC mains &take it to your MOON dealer for a complete check-up.
7. NEVER expose the MOON 820S to dripping or splashing of liquids and no objects filled with liquids, such as
vases, shall be placed on top.
8. NEVER block air flow through ventilation slots or heatsinks.
9. NEVER bypass any fuse.
10. NEVER replace any fuse with a value or type other than those specified
11. NEVER attempt to repair the MOON 820S. If a problem occurs contact your MOON dealer.
12. NEVER expose the MOON 820S to extremely high or low temperatures.
13. NEVER operate the MOON 820S in an explosive atmosphere.
14. ALWAYS keep electrical equipment out of reach of children.
15. ALWAYS unplug sensitive electronic equipment during lightning storms.
16. WARNING: Do not expose batteries or battery pack to excessive heat such as sunshine, or fire or the like.
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820S Power Supply
Table of Contents
Introduction .................................................... 6
Unpacking........................................................ 7
Installation & Placement ................................... 7
Rear Panel Connections ..................................... 8
Connecting the 820S ........................................ 8
Operating the 820S ........................................ 10
Troubleshooting ............................................. 10
Specifications ................................................ 11
www.simaudio.com
Simaudio Ltd., 1345 Newton Road
Boucherville, Quebec J4B 5H2 CANADA
Date Code: 20140717
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820S Power Supply
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6
Introduction
Thank you for selecting the MOON 820S power
supply as a part of your hi-fi reproduction system.
This power supply has been designed to upgrade
the “already state-of-the-art of performance” of any
one, or any combination of two of the following
MOON Evolution products simultaneously: 740P
Preamplifier, 650D and 750D DAC/CD Transports,
610LP and 810LP Phono Preamplifiers.
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 products are so
musically satisfying.
Before setting up your new MOON 820S, we
encourage you to please read this manual
thoroughly to properly acquaint yourself with its
features. We hope you enjoy using the MOON
820S power supply 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 820S Power Supply incorporates many significant design features to achieve its “world-class” level
of performance. This is an abbreviated list of the more important features:
Two custom proprietary toroidal transformers with
lower magnetic, electrical and thermal loss,
yielding an improved power transfer and lower regulation
factor. The result is increased current speed
and better dynamics; One each for analog and digital
power supplies.
Special "pi-type" filters – 2 for each for analog &
digital supplies - after the inital voltage rectification stage
that reduce AC transmission noise, using 40,000uF of
capacitance and dual choke inductance (2x 20mH).
The analog and digital supplies each have four stages of
our M-R2S circuit; A fully discrete voltage
regulation circuit using a "precision reference" feeding an
amplifier comprised of numerous IC's and transistors, as
opposed to a single voltage regulation chip. M-R2S
outputs pure DC power that is exceptionally fast, very
precise, has a virtually unmeasureable noise level, as well
as absolute stable voltage.
4-Layer printed circuit boards with pure copper
tracings and extremely low impedance characteristics
yielding much shorter signal paths and drastically reduced
noise levels.
Ultra rigid chassis construction to minimize the effects
of external vibrations.
Designed to be powered up at all times for optimal
performance.

820S Power Supply
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7
Unpacking
The MOON 820S power supply should be removed from its box with care.
The following accessories should be included inside the box with your power supply:
9 AC power cable
9 Two (2) 4-Pin XLR cables for analog section DC power
9 Two (2) 5-Pin XLR cables for digital section DC power
9 This owner’s manual
9 Warranty and product registration information (USA and Canada only)
Once the 820S is unpacked, inspect it thoroughly
and report any damage to your dealer immediately.
We suggest that you keep all of the original
packaging, storing it in a safe, dry place in case
you’re required to transport this product. The
customized packaging is specially designed to
protect the 820S from any potential damage during
transit.
Please write the serial number of your new MOON 820S in the space provided below for future reference.
Serial No.: ________________
Installation & Placement
The MOON 820S power supply should be placed on
a solid level surface. You should never place another
component directly on top of, or underneath this
power supply. If you wish to stack the 820S with
other MOON Evolution series components, we
suggest using a set of MOON Bridges, which have
been designed specifically for this purpose. Consult
your authorized MOON retailer for further details.
The MOON 820S uses two toroidal transformers in
its power supply; even though they are extremely
well shielded, you should not place this power
supply too close to source components such as a
turntable, phono preamplifier or CD Player. There
should be at least 2 inches of space between the
chassis’ of the 820S and any of your source
components.
If the surface you have chosen isn’t perfectly level,
each of the four (4) cones of your 820S are height
adjustable; carefully using your fingers, you can
either raise each leg by turning the cone underneath
clockwise, or lower each leg by turning it
counterclockwise.
We strongly recommend that you leave these cones
mounted to the component at all times for reasons
related to both performance and aesthetics.

820S Power Supply
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8
Rear Panel Connections
Figure 1: Rear panel of Moon 820S power supply
The rear panel will look similar to Figure 1 (above).
There are 2 pairs of outputs labeled “Analog DC
Power – Output 1” and “Digital DC Power – Output
2” . The Analog outputs use 4-Pin XLR connectors
and the Digital outputs use 5-Pin XLR connectors.
The “Analog DC Power” outputs are intended to
power the analog circuitry (audio) in the 740P
Preamplifier, 650D and 750D DAC / CD Transports,
as well as, both the 610LP and 810LP phono
preamplifiers. The “Digital DC Power” outputs are
intended to power the digital circuitry
(microprocessors for controller software, front panel
displays, CD drive) in the 740P Preamplifier, as well
as both the 650D and 750D DAC/ CD Transports.
The AC Power “main switch” and the “AC Input” IEC
receptacle for the power cord are located in the
center of the rear panel, between the Analog and
Digital AC Power outputs.
Connecting the 820S
1. Disconnect the AC power cable(s) from your
MOON Evolution component(s) that you will be
using with the 820S power supply.
2. Connect the 4-Pin XLR cable between one of the
4-pin XLR outputs labeled “Output 1” on the rear
panel of the 820S and the corresponding 4-Pin
XLR input on your MOON Evolution component,
as shown in figure 2 on the next page.
3. If applicable, connect the 5-Pin XLR cable
between one of the 5-pin XLR outputs labeled
“Output 2” on the rear panel of the 820S and
the corresponding 5-Pin XLR input on your
MOON Evolution component, as shown in figure
2 on the next page.
4. Connect the supplied AC power cable to the IEC
receptacle, located on the power supply’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
820S directly into a dedicated AC outlet and
avoid using an extension cord.
Notes: The example in figure 2 shows a 750D DAC/
CD Transport (top) connected to an 820S (middle)
by both a 4-Pin XLR cable and a 5-Pin XLR cable, as
well as a 610LP Phono Preamplifier (bottom)
connected to the 820S with only a 4-Pin XLR cable.
When using the 820S, the rear panel rocker switch
on any connected component(s) is bypassed.
When no components are connected to the 820S, it
will automatically go into standby mode after 20
minutes.

820S Power Supply
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9
Figure 2: Connecting the 820S to other MOON Evolution components
IMPORTANT !
Any component(s) connected to the 820S Power Supply will NOT power up,
remotely or via their standby button, when the 820S is powered off or in standby.

820S Power Supply
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10
Operating the 820S
We recommend leaving your 820S powered up at all times to maintain optimal performance. When you plan on
being away for a few days, it may not be a bad idea to power off your 820S.
Turning on your MOON 820S for the first time
Prior to turning the power supply on for the first
time, make sure that every cable is properly
connected to avoid any problems. Then turn on the
component(s) connected to the 820S. Flick the
main rocker switch, located on the rear panel,
labeled “POWER” to the ‘1’ (on) position. 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 on the front panel will illuminate,
indicating that the 820S is now powered up and the
connected component(s) ready for use. Next, press
the “Standby” button, located on the front panel of
the 820S. Finally, start the component(s) connected
to the power supply, using their respective standby
button(s).
On and Off Sequence
Always power up your 820S first, then press the
“Standby” button on your connected component(s).
As well, always power down your connected
component(s) first, via their “Standby” button,
before powering down your 820S.
Troubleshooting
The blue LED located on the front panel also
indicates the operational status of your MOON
820S
power supply. When the 820S detects a
problem, the LED will begin blinking two times,
repeatedly, and the power supply will stop powering
any connected component.

820S Power Supply
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11
Specifications
Transformers ................................................ 2 x 0.25kVA
Total Capacitance .......................................... 80,000µF
Total Inductance ........................................... 80mH
Output Voltage (analog supply output 1) ........... ±20 Volts
Output Voltage (digital supply output 2)............ +14 Volts
Power Consumption @ idle ............................. 25 Watts
AC Power Requirements ................................. 120V / 60Hz or 240V / 50Hz
Shipping Weight ............................................ 40 lbs / 18 Kgs
Dimensions (W x H x D, inches) ..................... 18.75 x 4.0 x 16.81
Fuse Replacement: For the 120V version use a 2A fast blow (3AG size).
For the 230V version use a 1A fast blow (3AG size)