Emotiva SP-1 User Manual
Important Safety Precautions and Explanation of Symbols
The exclamation point within an equilateral triangle is intended to alert the user to the
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presence of important installation, operation, and service instructions in this manual.
The lightning ash with arrowhead symbol within an equilateral triangle is intended to alert the
user to the presence of uninsulated dangerous voltages within the enclosure that may be of
sufcient magnitude to constitute a risk of electrical shock to the user.
Please read this manual thoroughly before attempting to install, congure, or operate the
Stealth SP-1. After successful installation and conguration of the Stealth SP-1, be sure to
retain this manual in a safe place for future reference.
Safety is a key component to a long lasting and trouble free installation. Please read and
follow all instructions and heed all warnings on the SP-1 and in this manual. The vast majority
of the subsequent safety precautions are common sense. If you are not comfortable with the
installation of professional audio/video equipment, you should seek the services of a qualied
installation professional or call us for help.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT USE THE
STEALTH SP-1 NEAR WATER OR IN WET LOCATIONS, DO NOT EXPOSE IT TO RAIN
OR MOISTURE, DO NOT EXPOSE IT TO DRIPPING OR SPLASHING FROM OTHER
SOURCES, AND ENSURE THAT NO OBJECTS FILLED WITH LIQUIDS (SUCH AS VASES)
ARE PLACED ON IT. DOING SO MAY RESULT IN DAMAGE TO THE UNIT AND THE RISK
OF ELECTRIC SHOCK, WHICH MAY RESULT IN BODILY INJURY OR DEATH.
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT DISASSEMBLE THE
STEALTH SP-1. THERE ARE NO USER-SERVICEABLE PARTS INSIDE THE UNIT. REFER
ALL SERVICE TO QUALIFIED SERVICE PERSONNEL.
Do not install the Stealth SP-1 near or above any heat sources such as radiators, heating
vents, or other apparatus that produce heat. Do not block any ventilation openings or heat
sinks. Avoid installing the unit directly above other heat-producing equipment unless sufcient
ventilation or forced-air cooling is provided.
Do not install the Stealth SP-1 in locations without proper ventilation. The Stealth SP-1 should
not be operated on a bed, sofa, rug, or similar surface that may block air ow to the heat
sinks. The unit should not be mounted against a surface or in an enclosed location such as a
bookcase, cabinet, or closed equipment rack unless sufcient ventilation is provided.
Always install your Stealth SP-1 according to the manufacturer’s instructions and only use
attachments or accessories specied by the manufacturer.
Connect the Stealth SP-1 only to power sources of the correct voltage (as shown in this
manual and on the Stealth SP-1 unit).
Protect power supply cables from being pinched, walked on, or otherwise damaged. Be
especially careful where the power cable enters the power outlet and the unit.
Only connect the Stealth SP-1 to an electrical outlet or extension cord of appropriate type and
rating.
DO NOT defeat the safety purpose of a grounding or polarized plug by removing ground pins
or using unsafe adapters. A polarized plug has two blades - one wider than the other.
A grounding plug has a third ground prong in addition to the two main conductors. The wide
blade or third groundling prong is provided for your safety. If the provided plug does not t
your outlet, consult an electrician to replace your obsolete outlet. If you replace the power
cord, only use one of similar type and equal or greater current rating.
The power cable for the Stealth SP-1 should be unplugged from the outlet during severe
electrical storms, or when unused for a long period of time.
Only replace the fuse(s) in the Stealth SP-1 with a fuse(s) of proper value and voltage rating.
The Stealth SP-1 should only be cleaned as directed in the manual. Avoid spraying liquids
directly onto the unit and NEVER spray liquids into the vents or controls, or directly onto the
face plate. Care should be taken so that small objects do not fall into the inside of the unit.
You should seek service for your Stealth SP-1 by qualied service personnel if any of the
following occur:
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1. The power-supply cord or the plug has been damaged.
2. Objects or liquid have fallen or spilled into the vents.
3. The unit has been exposed to rain.
4. The unit exhibits a marked change in performance.
5. The unit has been dropped, or its enclosure or chassis is damaged.
NOTE: TO COMPLETELY DISCONNECT THE STEALTH SP-1 FROM THE AC POWER
MAINS, DISCONNECT THE AC POWER CORD FROM THE AC RECEPTACLE.
NOTE: THE POWER CORD ON THE STEALTH SP-1 MUST REMAIN READILY
ACCESSIBLE AT ALL TIMES.
CAUTION
CAUTION: TO REDUCE THE RISK
OF ELECTRICAL SHOCK, DO
NOT REMOVE COVER. NO USER
SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
Stealth SP-1 Input Selector and Phono Preamp
®
SP-1 Input Selector and Phono Preamp
Contents
Important Safety Precautions and Explanation of Symbols
SP-1 Input Selector and Phono Preamp ................................................ 1
Introduction ...................................................................................... 2
About This Manual ............................................................................. 3
Features ........................................................................................... 4
Quick Start ....................................................................................... 5
What’s Inside the Stealth SP-1 (Block Diagram) ..................................... 5
Connecting the Stealth SP-1 ............................................................... 6
Stealth SP-1 (Front Panel) ..................................................................7
Stealth SP-1 (Rear Panel) ...................................................................8
Stealth SP-1 (Remote Control) .......................................................... 10
Using The Stealth SP-1 With a Stealth DC-1 ........................................ 11
Hardware Conguration .................................................................... 12
Care and Maintenance ...................................................................... 13
Specications .................................................................................. 14
Emotiva Audio Corporation Five-Year Limited Warranty ......................... 17
Notes ............................................................................................. 19
Page 1
Stealth SP-1 Input Selector and Phono Preamp
Introduction
Thank you for purchasing the new Stealth SP-1 Input Selector and Phono Preamp.
The Emotiva Stealth SP-1 is a totally new type of audio component. The SP-1 is
designed to work with your current analog preamp to expand its input capabilities
dramatically. The SP-1 is connected to any available line-level stereo input on your
current preamp. The SP-1 upgrades that single analog input to three line level inputs
and a phono input, passively switched by precision control relays. The SP-1’s internal
high performance low noise precision phono preamp supports both moving magnet and
moving coil cartridges.
The Stealth SP-1 can be used with any analog preamp with an available stereo line
level input, or it can be used with our Control Freak passive level control, but it was
specically designed to complement our Stealth DC-1 DAC. When the SP-1 is paired
with the DC-1 via its analog input, the two together form a modular system, which
offers a total of one phono input, three line level analog inputs, and a full complement
of ve digital inputs - two Coax S/PDIF inputs, one Toslink input, one AES/EBU
input, and one high-performance USB input. The DC-1 provides both balanced and
unbalanced stereo analog outputs, and a precision low noise volume control. The
complete system is operated by the DC-1’s remote control, and offers performance
matching the best analog and digital separates.
The Stealth SP-1; turn your DC-1 into a high performance modular audio system.
Happy listening!
The Emotiva Professional Team
Page 2
Stealth SP-1 Input Selector and Phono Preamp
About This Manual
This manual will provide you with all the information you need to get great
performance, accurate sound, and many years of reliable service from your
Stealth SP-1.
Many of you are experienced studio professionals and are probably familiar with
studio and audiophile preampliers, switchers, and D/A converters. We suggest that
you read through the entire manual as we kept things as short and direct as possible.
Even if you’re an expert user, you might nd some interesting information and useful
suggestions.
You may wish to record serial numbers or other purchase information on the Notes
page at the back of this manual.
Page 3
Stealth SP-1 Input Selector and Phono Preamp
Features
The Stealth SP-1 was designed to expand the analog capabilities of any stereo analog
preamp which has at least one available line level analog stereo input. When any of the
line level inputs on the SP-1 is selected, the signal from that input is routed directly to
the output via precision switching relays, which add virtually no distortion or noise to
the signal. When the Phono Input is selected, the signal is rst amplied and equalized
by the SP-1’s precision low noise phono preamp, and the output of the phono preamp
is then routed to the output.
The Stealth SP-1 was designed primarily as a companion device to our Stealth DC-1
DAC. When the outputs of the SP-1 are connected to the analog inputs on the
DC-1, the SP-1 expands the analog capabilities of the DC-1 from a single analog input
to three line level analog inputs and a precision, very high quality, phono input.
Since the SP-1 does not include its own volume control, it must always be used with
another device which provides some sort of level control. The SP-1 can be used with
our own DC-1, or with any other preamp, integrated amplier, or reciever with an
available stereo line level analog input, or even with our Control Freak passive volume
control.
When used together, the Stealth SP-1 and DC-1 comprise a very exible high quality
stereo preamplier, with four high quality analog inputs (including a phono input), ve
high performance digital inputs, balanced and unbalanced analog audio outputs, and a
full function remote control.
Features of the SP-1 itself include:
Three relay controlled line level analog inputs. Precision switching relays connect
the selected line level input on the SP-1 directly to the output, and introduce virtually
no noise or distortion.
Precision, high quality phono preamp. The phono preamp on the SP-1 uses the
same circuitry as the phono preamps in our other agship gear, and offers very low
noise and distortion, precise adherence to the RIAA standard, switchable gain to
accommodate both moving coil and moving magnet cartridges, and user-selectable
load impedance for the moving coil input.
Universal line voltage support. The SP-1 can be operated on any line voltage
between 115 VAC and 230 VAC, at 50 Hz or 60 Hz, and will automatically detect and
switch to the correct voltage.
Solid steel case. The solid steel case on the Stealth SP-1 provides excellent noise
shielding, protection from mechanical damage, and a solid “no nonsense” feel.
Convenient 1U half-width case with “Stealth” styling. The Stealth SP-1 has a
convenient half-rack width form factor, which allows two units to be placed side by side
on a standard rack shelf, and makes it easy to install the SP-1 in a small audio rack or
next to (or on top of) a computer.
High quality construction. Inside, the SP-1 uses four layer FR4 circuit boards,
precision lm resistors, and other top quality parts to ensure years of trouble-free
operation.
Page 4
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