Rotel RA-1572MKII User manual

Owner’s Manual
Manuel de l’utilisateur
Bedienungsanleitung
Manual de Instrucciones
Gebruikershandleiding
Manuale di istruzioni
Instruktionsbok
Инструкция пользователя
RA‑1572MKII
Stereo Integrated Amplier
Amplicateur Stéréo Intégré
Stereo‑Vollverstärker
Amplicador Integrado Estereofónico
Geïntegreerde stereoversterker
Amplicatore integrato stereo
Integrerad stereoförstärkare
Интегрированный стерео усилитель

2RA‑1572MKII Stereo Integrated Amplier
Notice
The RS232 connection should be handled by authorized persons only.
WARNING: There are no user serviceable parts inside. Refer all servicing
to qualified service personnel.
WARNING: To reduce the risk of fire or electric shock, do not expose
the unit to moisture or water. Do not expose the unit to dripping or
splashing. Do not place objects filled with liquids, such as vases, on
the unit. Do not allow foreign objects to get into the enclosure. If the
unit is exposed to moisture, or a foreign object gets into the enclosure,
immediately disconnect the power cord from the wall. Take the unit to a
qualified service person for inspection and necessary repairs.
Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with dry cloth.
Do not block any ventilation openings. Install in accordance with the
manufacturer’s instructions.
Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat. 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 are provided for your safety. If the
provided plug does not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
Protect the power cord from being walked on or pinched particularly
at plugs, convenience receptacles, and the point where they exit from
the apparatus.
Only use attachments/accessories specified by the manufacturer.
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.
Unplug this apparatus during lightning storms or when unused for
long periods of time.
Refer all servicing to qualified service personnel. Servicing is required
when the apparatus has been damaged in any way, such as power supply
cord or plug is damaged, liquid has been spilled or objects have fallen
into the apparatus, the apparatus has been exposed to rain or moisture,
does not operate normally, or has been dropped.
The apparatus should be used in non tropical climate.
The ventilation should not be impeded by covering the ventilation openings
with items, such as newspapers, table-cloths, curtains, etc.
No naked flame sources, such as lighted candles, should be placed on
the apparatus.
Touching uninsulated terminals or wiring may result in an unpleasant
sensation.
Rotel products are designed to comply with
international directives on the Restriction of
Hazardous Substances (RoHS) in electrical and
electronic equipment and the disposal of Waste
Electrical and Electronic Equipment (WEEE). The
crossed wheelie bin symbol indicates compliance and
that the products must be appropriately recycled
or processed in accordance with these directives.
This symbol means that this unit is double insulated.
An earth connection is not required.
Important Safety Instructions
You must allow a minimum 10 cm or 4 inches of unobstructed
clearance around the unit.
WARNING:
The rear panel power cord connector is the mains power
disconnect device. The device must be located in an open area that
allows access to the cord connector.
The unit must be connected to a power supply only of the type and
voltage specified on the rear panel. (USA: 120 V/60Hz, EC: 230V/50Hz)
Connect the component to the power outlet only with the supplied power
supply cable or an exact equivalent. Do not modify the supplied cable.
Do not use extension cords.
The mains plug is the disconnect of the unit. In order to completely
disconnect the unit from the supply mains, remove the main plug from
the unit and the AC power outlet. This is the only way to completely
remove mains power from the unit.
Use Class 2 wiring for speaker connections to ensure proper installation
and minimize the risk of electrical shock.
The batteries in the remote control should not be exposed to excessive
temperature such as sunshine, fire or other heat sources. Batteries
should be recycled or disposed as per state and local guidelines.
This device complies with Part 15 of the FCC Rules. Operation is
subject to the following to conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation. 12
3
Pin Assignments
Balanced Audio (3 pole XLR):
Pin 1: Ground / Screen
Pin 2: In phase / +ve / Hot
Pin 3: Out of phase / ‑ve / Cold

3
1 2 4
3
wq=-
976 85
e r ty0 u
o p \[i ]
Figure 1 : Controls and Connections
Commandes et Branchements
Bedienelemente und Anschlüsse
Controles y Conexiones
Controlli e connessioni
Bedieningselementen en aansluitingen
Controlli e connessioni Kontroller och anslutningar
Органы управления и разъемы

4RA‑1572MKII Stereo Integrated Amplier
A
C
E
F
G
H
I
J
K
Q
N
M
L
O
B
D
P
Figure 2 : RR‑AX93 Remote Control
Télécommande infrarouge RR‑AX93
Fernbedienung RR‑AX93
Mando a Distancia RR‑AX93
Afstandsbediening RR-AX93
Telecomando RR-AX93
RR-AX93 fjärrkontroll
Пульт ДУ RR-AX93

5
R L
RP-565E
CLASS 1
LASER PRODUCT
APPAREIL LASER
DE CLASSE 1
Rotel RCD-1572
Rotel RA-1572MKII
SPEAKERSPEAKER
GND
Figure 3 : Analog Input and Speaker Output Connections
Branchements des entrées analogiques et sorties enceintes acoustiques
Anschlussdiagramm (analoge Eingangsanschlüsse, Ausgangsanschlüsse für die Lautsprecher)
Conexiones de Entrada Analógicas y de Salida a las Cajas Acústicas
Analoge ingangen en luidsprekeruitgangen
Collegamenti ingressi analogici ed uscite diffusori
Anslutningar för högtalare och analoga ingångar
Подсоединение источников сигнала на аналоговые входы и акустических систем

6RA‑1572MKII Stereo Integrated Amplier
Computer
(Supplied)
RP-565E
CLASS 1
LASER PRODUCT
APPAREIL LASER
DE CLASSE 1
Rotel RCD-1572
Rotel RA-1572MKII
Figure 4 : Digital Input and 12 Volt Trigger Out Connections
Entrées numériques et Branchements des sorties trigger 12 V
Anschlussdiagramm (Digitaleingänge, 12V‑Trigger‑Ausgänge)
Entrada Digital y Conexiones de Salida para Señal de Disparo de 12 Voltios
Digitale ingangen en 12V‑triggeruitgangen
Collegamenti ingressi digitali e segnali Trigger 12 V
Anslutningar för digitala ingångar och 12‑volts styrsignaler
Цифровой вход и выход 12-В триггерного сигнала

7
Rotel RCD-1572
Rotel RA-1572MKII
RP-565E
CLASS 1
LASER PRODUCT
APPAREIL LASER
DE CLASSE 1
Figure 5 : Balanced (XLR) Inputs Connection
Entrées symétriques (XLR) connexion
Anschlussdiagramm (symmetrische (XLR‑) Eingänge)
Conexión de Entradas Balanceadas (XLR)
Aansluiting Gebalanceerde ingangen (XLR)
Collegamenti ingressi bilanciati (XLR)
Balanserade anslutningar (XLR)
Балансные (XLR) Входы Подключение

8RA‑1572MKII Stereo Integrated Amplier
Important Notes
When making connections be sure to:
4Turn off all the components in the system before hooking up any components, including loudspeakers.
4Turn off all components in the system before changing any of the connections to the system.
It is also recommended that you:
4Turn the volume control of the amplifier all the way down before the amplifier is turned on or off.
Remarques importantes
Pendant les branchements, assurez-vous que :
4Tous les maillons sont éteints avant leur branchement, quels qu’ils soient, y compris les enceintes acoustiques.
4Éteignez tous les maillons avant de modifier quoi que ce soit au niveau de leurs branchements, quels qu’ils soient.
Il est également recommandé de :
4Toujours baissez le niveau sonore via le contrôle de volume, avant d’allumer ou d’éteindre l’amplificateur.
Wichtige Hinweise
Achten Sie beim Herstellen der Verbindungen auf Folgendes:
4Schalten Sie alle Komponenten im System ab, bevor Sie Geräte (einschließlich Lautsprecher) anschließen.
4Schalten Sie alle Komponenten im System ab, bevor Sie Anschlüsse im System verändern.
Ferner empfehlen wir, dass
4Sie die Lautstärke herunterdrehen, bevor Sie den Verstärker ein- oder abschalten.
Notas Importantes
Cuando realice las conexiones, asegúrese de que:
4Desactiva todos los componentes del equipo, cajas acústicas incluidas, antes de conectar cualquier nuevo componente en el mismo.
4Desactiva todos los componentes del equipo antes de cambiar cualquier conexión del mismo.
También le recomendamos que:
4Reduzca el nivel de volumen de su amplificador a cero antes de activarlo o desactivarlo.
Héél belangrijk
Bij het maken van de verbindingen:
4Zorg dat niet alleen de RA-1572MKII, maar de gehele installatie uitstaat, als nog niet alle verbindingen gemaakt zijn.
4Zorg dat niet alleen de RA-1572MKII, maar de gehele installatie ook uitstaat, als u verbindingen gaat wijzigen.
Wij raden u ook aan om
4de volumeregelaar van de (voor)versterker geheel dicht te draaien (volkomen linksom) wanneer u uw eindversterker aan- of uitzet.
Note importanti
Quando effettuate i collegamenti assicuratevi di:
4Spegnere tutti i componenti del sistema prima di collegare qualsiasi componente, inclusi i diffusori.
4Spegnere tutti i componenti del sistema prima di modificare qualsiasi connessione nel sistema.
Vi raccomandiamo inoltre di:
4Portare il volume a zero prima di accendere o spegnere l’amplificatore.
Viktigt
Tänk på följande när du gör anslutningar:
4Stäng av alla apparater i anläggningen innan du ansluter nya komponenter eller högtalare.
4Stäng av alla apparater i anläggningen innan du ändrar någon anslutning.
Du rekommenderas också:
4Vrida ner volymen på förförstärkaren helt och hållet innan förstärkaren slås på eller av.
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9
About Rotel
Our story began over 50 years ago. Over the decades, we have received
hundreds of awards for our products and satised hundreds of thousands
of people who take their entertainment seriously - like you!
Rotel was founded by a family whose passionate interest in music led them
to manufacture high-delity components of uncompromising quality. Through
the years, that passion has remained undiminished and the family goal of
providing exceptional value for audiophiles and music lovers, regardless
of their budget, is shared by all Rotel employees.
Rotel’s engineers work as a close team, listening to, and ne tuning, each
new product until it reaches their exacting musical standards. They are
free to choose components from around the world in order to make that
product the best they can. You are likely to nd capacitors from the United
Kingdom and Germany, semiconductors from Japan or the United States,
while toroidal power transformers are manufactured in Rotel’s own factory.
We all have concerns about our environment. And, as more and more
electronics are produced it is especially important for a manufacturer to do all
it can to engineer products that have a minimum impact on the environment.
At Rotel, we are proud to do our part. We have reduced the lead content
in our products by using special lead-free ROHS solder and components.
Our engineers continually strive to improve power supply efciency without
compromise to quality. When in standby mode Rotel products use minimal
power to meet global Standby Power Consumption requirements.
The Rotel factory is also doing their part to help the environment through
constant improvements to product assembly methods for a cleaner and
greener manufacturing processes.
All of us at Rotel thank you for buying this product. We are sure it will bring
you many years of enjoyment.
A Word About Watts
This amplier’s power output is rated as 120 watts for each channel, when
both channels are operating together at full power. Rotel has chosen to
specify the power output in this way because, in Rotel’s experience, it gives
the truest value of the receiver or amplier’s power capability.
When comparing specications for different products, you should be
aware that power output is often specied in other ways, so you may not
be comparing like with like. For example, the power output may be quoted
with only one channel operating, giving a higher maximum gure.
A loudspeaker’s impedance rating indicates the electrical resistance or
load it offers when connected to the amplier, usually 8 ohms or 4 ohms.
The lower the impedance, the more power the speaker will need. In effect,
a 4 ohm speaker will require twice as much power as an 8 ohm speaker.
However, Rotel ampliers are designed to work into any speaker impedance
between 8 and 4 ohms, and with all the channels working up to their full
power. Because Rotel designs are optimized for use with all channels operating
together, Rotel is able to specify the true power output for both channels.
Contents
Important Safety Instructions ..........................................2
Figure 1: Controls and Connections 3
Figure 2: RR‑AX93 Remote Control 4
Figure 3: Analog Inputs and Speaker Output Connections 5
Figure 4: Digital Input and 12 Volt Trigger out Connections 6
Figure 5: Balanced (XLR) Inputs Connections 7
Important notes 8
About Rotel .......................................................9
A Word About Watts ................................................9
Getting Started ...................................................10
A Few Precautions 10
Placement 10
Cables 10
The RR-AX93 Remote Control.........................................10
Remote Control Batteries 10
AC Power and Control ..............................................10
AC Power Input \10
POWER Switch and Power Indicator 1A11
12V TRIGGER Connection [11
Input Signal Connections ......................................................11
Phono Input -and Ground Connection (GND) 011
Line Level Inputs -11
Balanced (XLR) Inputs w11
Digital Signal Inputs e11
Output Connections ................................................11
MONO SUB Output =11
Preamp Output q11
Headphone Output 511
Speaker Outputs i...............................................11
Speaker Selection 11
Speaker Wire Selection 11
Polarity and Phasing 12
Speaker Connections i12
Remote Sensor 2.................................................12
Display 3......................................................12
Front USB Input 6................................................12
APTX Bluetooth Connection y........................................12
Rear USB Power port ]............................................12
Audio Controls ...................................................12
VOLUME Control 4G12
BALANCE Control 9C12
TONE Control Bypass 9C12
BASS and TREBLE Controls 9C13
Source Input Selector 8K13
Dimmer Control ...................................................13
Display Dimmer 9B13
POWER LED Dimmer 913
PC-USB Input r........................................................... 13
RS232 u................................................................. 14
Rotel Link o............................................................... 14
EXT REM IN Jack p........................................................ 14
Network Connection t.............................................14
Protection Circuit ..................................................14
Settings Menu ....................................................14
Troubleshooting ...................................................16
Power Indicator Is Not Illuminated 16
Fuse Replacement 16
No Sound 16
Cannot Connect via Bluetooth 16
Playable Audio Formats 16
Specications ....................................................17

10 RA‑1572MKII Stereo Integrated Amplier
Getting Started
Thank you for purchasing the Rotel RA-1572MKII Stereo Integrated Amplier.
When used in a high-quality music audio system, your Rotel product will
provide years of musical enjoyment.
The RA-1572MKII is a full featured, high performance component. All aspects
of the design have been optimized to retain the full dynamic range and subtle
nuances of your music. The RA-1572MKII has a highly regulated power
supply incorporating a Rotel custom-designed toroidal power transformer
and custom-made slit foil capacitors. This low impedance power supply has
ample power reserves, which enables the RA-1572MKII to easily reproduce
the most demanding audio signals. This type of design is more expensive
to manufacture, but it is better for the music.
The printed circuit boards (PCB) are designed with Symmetrical Circuit
Traces. This insures that the precise timing of the music is maintained and
faithfully recreated. The RA-1572MKII circuitry uses metal lm resistors
and polystyrene or polypropylene capacitors in important signal paths.
All aspects of this design have been examined to ensure the most faithful
music reproduction.
The main functions of the RA-1572MKII are easy to install and use. If you
have experience with other stereo systems, you shouldn’t nd anything
perplexing. Simply plug in the associated components and enjoy.
A Few Precautions
WARNING: To avoid potential damage to your system, turn off ALL
the components in the system when connecting or disconnecting the
loudspeakers or any associated components. Do not turn the system
components back on until you are sure all the connections are correct
and secure. Pay particular attention to the speaker wires. There must
be no loose strands that could contact the other speaker wires, or the
chassis of the amplier.
Please read this manual carefully. In addition to basic installation and operating
instructions, it provides valuable information on various RA-1572MKII system
congurations as well as general information that will help you get optimum
performance from your system. Please contact your authorized Rotel dealer
for answers to any questions you might have. In addition, all of us at Rotel
welcome your questions and comments.
Save the shipping carton and all enclosed packing material for future use.
Shipping or moving the RA-1572MKII in anything other than the original
packing material may result in severe damage to your amplier.
If included in the box please complete the owner’s registration card or
register on line. Also be sure to keep the original sales receipt. It is your best
record of the date of purchase, which you will need in the event warranty
service is ever required.
Placement
Like all audio components that handle low-level signals, the RA-1572MKII
can be affected by its environment. Avoid placing the RA-1572MKII on top
of other components. Also avoid routing audio signal cables near power
cords. This will minimize the chance it will pick up hum or interference.
The RA-1572MKII generates heat as part of its normal operation. The heat
sinks and ventilation openings in the amplier are designed to dissipate this
heat. The ventilation slots in the top cover must be open. There should be
10 cm (4 inches) of clearance around the chassis, and reasonable airow
through the installation location, to prevent the amplier from overheating.
Remember the weight of the amplier when you select an installation location.
Make sure that the shelf or cabinet can support it. We recommend installing
the RA-1572MKII in furniture designed to house audio components. Such
furniture is designed to reduce or suppress vibration which can adversely
affect sound quality. Ask your authorized Rotel dealer for advice about
component furniture and proper installation of audio components.
The RA-1572MKII is supplied with an RR-AX93 remote control and must
be placed where the infrared signal from the remote can reach the front
panel Remote Sensor.
Cables
Be sure to keep the power cords, digital signal cables and analog audio
signal cables in your installation away from each other. This will minimize
the chance of the analog audio signal cables picking up noise or interference
from the power cords or digital cables. Using only high quality, shielded
cables will also help to prevent noise or interference from degrading the
sound quality of your system. If you have any questions see your authorized
Rotel dealer for advice about the best cable to use with your system.
The RR‑AX93 Remote Control
Some functions can be done with either the front panel controls, or the
supplied RR-AX93 remote control. When these operations are described,
the square call out numbers refer to the main unit, while the encircled letters
refer to the remote control.
Remote Control Batteries
Two AAA size batteries (supplied) must be installed before the remote control
can be used. To install the batteries, remove the cover on the back of the
RR-AX93. Install the batteries as shown in the illustration in the battery well.
Test the control for proper operation, then replace the cover. When the
batteries become weak the remote control won’t operate the RA-1572MKII
consistently. Installing fresh batteries should eliminate the problem.
AC Power and Control
AC Power Input \
Your RA-1572MKII is congured at the factory for the proper AC line voltage
in the country where you purchased it (either 120 volts AC or 230 volts AC
with a line frequency of either 50 Hz or 60 Hz). The AC line conguration
is noted on a decal on the back panel.
NOTE: Should you move your RA‑1572MKII to another country, it
is possible to recongure your amplier for use on a different line
voltage. Do not attempt to perform this conversion yourself. Opening
the enclosure of the RA‑1572MKII exposes you to dangerous voltages.
Consult a qualified service person or the Rotel factory service
department for information.
NOTE: Some products are intended for sale in more than one country
and as such are supplied with more than one AC cord. Please only use
the one appropriate for your country/region.
Because of its relatively high power rating, the RA-1572MKII can draw
considerable current. Therefore, it should be plugged directly into a polarized

11
wall outlet using the supplied cable or other high current compatible cable
as recommended by your authorized Rotel dealer. Do not use an extension
cord. A heavy duty multi-tap power outlet strip may be used if it (and the
wall outlet) is rated to handle the current demanded by the RA-1572MKII
and all the other components connected to it.
If you are going to be away from home for an extended period of time
such as a month-long vacation, it is a sensible precaution to unplug your
amplier (as well as other audio and video components) while you are away.
POWER Switch and Power Indicator 1A
Press the front panel Power Switch button, to turn the unit on. The Power
Indicator light is illuminated when the unit is on. Press Power Switch button
again to turn the unit off.
When the power switch is in the ON position, the remote control ON and
OFF buttons Amay be used to activate the RA-1572MKII. In Standby mode
the power LED remains illuminated, but the display is turned off.
12V TRIGGER Connection [
See Figure 4
Some audio components can be turned on automatically when they receive a
12V turn on signal. The two 12V Trigger Outputs of the RA-1572MKII provide
the required signal. Connect compatible components to the RA-1572MKII
with a conventional 3.5mm mini plug cable. When the RA-1572MKII is
in standby mode or turned off, the trigger signal is interrupted, so the
components controlled by it are turned off.
Input Signal Connections
NOTE: To prevent loud noises that neither you nor your speakers will
appreciate, make sure the system is turned off when you make any
signal connections.
Phono Input -and Ground Connection (GND) 0
See Figure 3
Plug the cable from the turntable into the appropriate left and right phono
inputs. If the turntable has a “ground” wire, connect it to the screw terminal
to the left of the Phono inputs. It will help prevent hum and noise.
Line Level Inputs -
See Figure 3
The CD, Tuner, and Aux inputs of the amplier are analog “line level” inputs.
These inputs are for connecting components such as CD players or other
audio playback devices with an analog audio output.
The left and right channels are clearly labeled and should be connected to
the corresponding channels of the source component. The Left connectors
are white, the Right connectors are red. Use high quality RCA cables
for connecting input source components to the RA-1572MKII . Ask your
authorized Rotel dealer for advice about cables.
Balanced (XLR) Inputs w
See Figure 5
A pair of balanced XLR inputs accept audio signals from CD player, Blu-ray
player or other source components with XLR outputs.
NOTE: You should choose only one method of analog connection from
a source component to RA‑1572MKII. Do not connect both the RCA and
XLR outputs of a source component to the RA‑1572MKII at the same time.
Digital Signal Inputs e
See Figure 4
There are two sets of digital inputs labeled 1 and 2 for COAXIAL and
OPTICAL respectively. Connect the COAXIAL or OPTICAL PCM outputs
of your source component into these sockets. The digital signals will be
decoded and played by the RA-1572MKII. The unit is capable of decoding
PCM signals up to 24 bit, 192kHz.
Output Connections
MONO SUB Output =
There are 2 connectors for mono subwoofer output to connect to a subwoofer.
These mono outputs are summed with both the left and right audio signal.
They are parallel outputs allowing 2 subwoofers to be connected to the
RA-1572MKII.
Preamp Output q
The RA-1572MKII has a set of preamp outputs labeled PRE OUT. The currently
selected source input is available from this output. Typically the PRE OUT
output is used to provide a signal to another integrated amplier or power
amplier, which is used to drive remote speakers.
NOTE: Changes to the settings of the Volume, Balance or Tone controls
affect the signal from the Preamp Output.
Headphone Output 5
The headphone output allows you to connect headphones for private listening.
This output accepts a standard 3.5mm (1/8”) mini stereo headphone
connector. Plugging in a set of headphones does not cut off the signal to
the speakers. Use the front panel 7or remote control LA-B Speaker
Selector to turn off the speakers.
NOTE: Because the sensitivity of speakers and headphones can
vary widely, always reduce the volume level before connecting or
disconnecting headphones.
Speaker Outputs i
See Figure 3
The RA-1572MKII has two sets of speaker outputs, labeled SPEAKER A and
SPEAKER B. The speaker outputs are controlled by the A-B speaker selector
buttons 7 on the front panel and the buttons Lon the remote control.
Speaker Selection
If only one set of speakers will be used at any given time, the speakers may
have an impedance as low as 4 ohms. If there are times when both the A
and B speakers will be used, all the speakers should have an impedance of 8
ohms or more. Speaker impedance ratings are less than precise. In practice,
very few loudspeakers will present any problems for the RA-1572MKII . See
your authorized Rotel dealer if you have any questions.
Speaker Wire Selection
Use insulated two-conductor stranded wire to connect the RA-1572MKII to
the speakers. The size and quality of the wire can have an audible effect
on the performance of the system. Standard speaker wire will work, but
can result in lower output or diminished bass response, particularly over
longer distances. In general, heavier wire will improve the sound. For best

12 RA‑1572MKII Stereo Integrated Amplier
performance, you may want to consider special high-quality speaker cables.
Your authorized Rotel dealer can help in the selection of cables for your system.
Polarity and Phasing
The polarity – the positive/negative orientation of the connections – for every
speaker and amplier connection must be consistent so all the speakers will
be in phase. If the polarity of one connection is reversed, bass output will
be very weak and stereo imaging degraded. All wire is marked so you can
identify the two conductors. There may be ribs or a stripe on the insulation
of one conductor. The wire may have clear insulation with different color
conductors (copper and silver). There may be polarity indications printed
on the insulation. Identify the positive and negative conductors and be
consistent with every speaker and amplier connection.
Speaker Connections i
Turn off all the components in the system before connecting the speakers.
The RA-1572MKII has color-coded binding post type speaker connectors
on the back panel. These connectors accept bare wire, connector lugs, or
dual banana type connectors. (except in European Community countries
where their use is not permitted.)
Route the wire from the RA-1572MKII to the speakers. Give yourself
enough slack so you can move the components to allow access to the
speaker connectors.
If you are using dual banana plugs, connect them to the wires and then
plug into the backs of the binding posts. The thumbscrews of the binding
posts should be screwed in all the way (clockwise).
If you are using terminal lugs, connect them to the wires. If you are attaching
bare wires directly to the binding posts, separate the wire conductors and
strip the insulation from the end of each conductor. Be careful not to cut into
the wire strands. Unscrew (turn counterclockwise) the binding post. Place
the connector lug or wire around the binding post shaft. Turn the binding
post clockwise to clamp the connector lug or wire rmly in place.
NOTE: Be sure there are no loose wire strands that could touch adjacent
wires or connectors.
Remote Sensor 2
This remote sensor window receives IR commands from the remote control.
Please do not block this sensor.
Display 3
The front panel display shows the source selected, volume level and tone
settings. The display provides access to the setup and conguration menu
options of the amplier.
Front USB Input 6
The front USB input can be connected to an iPhone, iPad or iPod device
providing music playback to the amplier. To enable audio playback using
one of these devices simply plug the device into the front USB and select
USB as the desired source. The iPhone, iPad and iPod device will remain
active allowing search and play functions.
APTX Bluetooth Connection y
The Bluetooth Antenna yon the RA-1572MKII’s back panel is for wireless
streaming via Bluetooth from your device (i.e. mobile phones, tablets or
computers). From your device, look for “Rotel Bluetooth” and connect to it.
Connection is normally automatic, but if prompted for a password, please
press “0000” on your device. The RA-1572MKII’s supports both traditional
Bluetooth, AAC and APTX Bluetooth audio streaming.
Rear USB Power Port ]
The rear USB port provides 5V/0.5 amps for charging or powering
USB devices including streaming music players. This port does not allow
playback of audio.
The port can be congured to remain powered even when the RA-1572MKII
is in standby mode through the front panel setup menu (See USB POWER
on page 14).
This conguration option allows the attached streaming source to remain
powered for use with the Signal Sense function for automatic power on/
off control of the amplier.
NOTE: When congured to provide continuous power to the rear
panel USB port the RA‑1572MKII will consume additional power even
when in standby mode.
Audio Controls
VOLUME Control 4G
Turn the knob clockwise to increase the volume, or counter clockwise to
decrease the volume. From the remote control press the volume + or - button
to turn the volume up or down. Press the MUTE Hbutton to completely
mute the volume.
BALANCE Control 9C
The Balance Control adjusts the left - to - right balance of the sound output.
The factory default is the center position or “0”. To change the balance from
the front panel, press the MENU 9 button to toggle the front display to
BALANCE SETTING mode. Then press the - or + button on the front panel to
change the value to LEFT or RIGHT. The value can change from L15 to R15.
NOTE: This setting is saved permanently including after powering off
the RA‑1572MKII.
To make temporary changes not saved after power off, from the remote,
press the BAL Cbutton to access the BALANCE SETTING menu, then press
the up/down/left/right Earrow buttons to adjust. When nished, press
the BAL Cbutton again to exit the menu.
Tone Control Bypass 9C
Bass and Treble Control (Tone Control) circuits are bypassed at factory
default to ensure the purest possible sound. To turn on the tone control from
the front panel, press the MENU 9button to toggle to the Tone Bypass
control then press the - or + button on the front panel to turn bypass on or off.
When tone bypass is set to on, the front display will show TONE BYPASS.
NOTE: This setting is saved permanently including after powering off
the RA‑1572MKII.

13
To temporarily changes the Tone Control Bypass, press the BYPASS Cbutton
on the remote control to toggle the Bypass mode enabled and disabled.
Bass and Treble Controls 9C
Set the Bass or Treble controls from the front panel by pressing the MENU
9button to toggle to the Tone control menu. Press ENTER 9button to
toggle between BASS and TREB options. Press the - or + 9button to adjust
the value. The Bass and Treble values range from -10 to +10.
NOTE: These settings are saved permanently including after powering
off the RA‑1572MKII.
To temporarily change the Bass and Treble settings from the remote control,
press the BASS or TREB button C, then press the up/down/left/right E
arrow buttons on the remote to adjust the value.
NOTE: Bass and Treble changes are only available when Tone Bypass
is disabled (see Tone Control Bypass section).
A properly setup high-performance audio system produces the most natural
sound with little or no adjustment of the tone controls. Use these controls
sparingly. Be particularly careful when turning the controls up as this
increases the power output in the bass or treble range, increasing the load
on the amplier and speakers.
NOTE: Setting the Bass and Treble controls does not automatically turn
on the tone control. To turn on tone control, refer to previous section
Tone Control Bypass.
Source Input Selector 8K
Press the corresponding input button on the front panel 8or remote control
Kto select the desired listening source.
Dimmer Control
Display Dimmer 9B
To change the brightness of the front display, press the MENU 9button
to toggle to the DIMMER Setting. Then press the - or + button on the front
panel to change the brightness.
NOTE: This setting is saved permanently including after powering off
the RA‑1572MKII.
To temporarily change the display brightness, press the DIM Bbutton on
the remote.
POWER LED Dimmer 9
To change the brightness of the Power LED and the two Speaker Selector
LEDs on the front panel, press the MENU 9button to toggle to the POWER
LED Setting. Then press the - or + button on the front panel to change the
brightness.
Valid settings include: BRIGHT, MID, DIM.
NOTE: This setting is saved permanently including after powering off
the RA‑1572MKII.
PC‑USB Input r
See Figure 4
Connect this input using the supplied USB cable to the USB socket of your
computer.
The RA-1572MKII supports both USB Audio Class 1.0 and USB Audio Class
2.0 modes. Windows computers do not require installation of a driver for
USB Audio Class 1.0 and support playback of audio up to 96kHz sampling
rates. The Factory Default setting is USB Audio Class 1.0.
To take advantage of USB Audio Class 2.0 audio playback supporting up to
384kHz sampling rates you will need to install the Windows driver supplied
on the CD included with the RA-1572MKII. You will also need to switch the
RA-1572MKII to USB Audio Class 2.0 playback mode with the following:
• Press MENU on the front panel until “PC-USB AUDIO CLASS” appears
on the display.
• Select “2.0” using the “-” button then press “ENTER”.
• Power cycle the RA-1572MKII and reboot your PC after changing the USB
Audio mode to ensure both units are properly congured.
Many audio playback applications do not support 384kHz sampling rate.
Please conrm your audio player supports 384kHz audio and you have
384kHz audio les to properly playback this sample rate. Also, you may
need to congure the audio driver in your PC to output 384kHz or your
computer may “down sample” to a lower audio sample rate. For more
information please refer to your audio player or operating system information.
The RA-1572MKII has been certied as Roon Tested and compatible with
Roon software via PC-USB.
Being Roon Tested means that Rotel and Roon have collaborated to ensure
you have the best experience using Roon software and the RA-1572MKII
together, so you can just enjoy the music.
For the best user experience it is suggested to use USB Audio Class 2.0
when using Roon.
NOTE: USB Audio Class 2.0 requires installation of the Windows PC
driver on the CD ROM included with the RA‑1572MKII.
NOTE: MAC computers do not require a driver to support PC‑USB
1.0 or 2.0 audio.
NOTE: Upon successful installation of the driver, you may need to select
the ROTEL audio driver from the audio/speaker setup of your computer.
NOTE: Support for MQA and MQA Studio requires USB Audio Class
2.0. Please select USB Audio 2.0 to support MQA.

14 RA‑1572MKII Stereo Integrated Amplier
If the protection circuitry triggers repeatedly and you are unable to isolate
and correct the faulty condition, contact your authorized Rotel dealer for
assistance in troubleshooting.
Settings Menu
You can access the settings menu from the front panel by pressing the
MENU 9button or the SETUP Dbutton on the remote. You can change
the value of the selected option by pressing the +/- buttons on the front
panel or up/down/left/right Earrow buttons on the remote. Step through
the sub-menus by pressing the MENU 9button on the front panel or the
SETUP Dbutton on the remote.
• TONE Control: TONE BYPASS ON/OFF, BASS level and TREBLE levels
can be changed to desired settings. Press the ENTER button on the front
panel or on the remote to toggle between the tone setup options. (For
more information on Tone Control refer to the Tone Control Bypass, Bass
and Treble control sections.)
NOTE: These settings are stored permanently even after the RA‑1572MKII
is powered off.
• BALANCE: Change left/right balance (For more information on Balance
sections refer to the Balance Control section).
NOTE: This setting is stored permanently even after the RA‑1572MKII
is powered off.
• DIMMER: Dims the front display.
NOTE: This setting is stored permanently even after the RA‑1572MKII
is powered off.
• POWER LED: Dims the Power LED and the LEDs above the Speaker Selector
buttons on the front panel.
NOTE: This setting is stored permanently even after the RA‑1572MKII
is powered off.
• POWER ON MAX VOLUME: This sets the maximum volume level when
the unit is turned ON. “45” is the factory default.
NOTE: Power On Max Volume settings do not apply to sources
congured with Fixed Gain.
• POWER OPTION: Enables the RA-1572MKII to be controlled via the network
port when attached to an automation system. The power consumption is
higher in Quick Power mode. If network control is not required select the
Normal Power mode. “Normal” is the factory default.
Valid settings include: Normal, Quick.
NOTE: When the POWER OPTION is configured to Quick, the
RA‑1572MKII will consume additional power in standby mode.
NOTE: Due to local power consumption regulations the POWER
OPTION function is not available in all markets.
• USB POWER: This option allows the rear panel USB connector to provide
power, even when the RA-1572MKII is in standby mode.
RS232 u
The RA-1572MKII can be controlled via RS232 for integration with
automation systems. The RS232 input accepts a standard straight DB-9
Male-to-Female cable.
For additional information on the connections, software, and operating codes
for RS232 control of the RA-1572MKII, contact your authorized Rotel dealer.
Rotel Link o
Rotel Link is not used for RA-1572MKII.
EXT REM IN Jack p
This 3.5mm mini-jack receives command codes from industry-standard infrared
receivers via hard-wired connections. This feature could prove useful when
the unit is installed in a cabinet and the front-panel sensor is blocked. Consult
your authorized Rotel dealer for information on these external repeaters and
the proper wiring of a jack to t the mini-jack receptacle.
Network Connection t
The RA-1572MKII can be attached to a network using the rear panel
NETWORK socket t. The NETWORK congurations allow both STATIC
and DHCP IP addressing. See the Network section of this manual under
Setting Menu for IP address conguration information.
The NETWORK connection allows software updates to be downloaded from
the Internet. The NETWORK connection also allows IP control for integration
with automation systems.
For additional information on the IP control please contact your authorized
Rotel dealer.
Protection Circuit
The amplier has both thermal and over-current protection circuitry that
protects the amplier against damage in the event of extreme or faulty
operating conditions. The protection circuits are independent of the audio
signal and have no impact on sonic performance. Instead, the protection
circuits monitor the temperature of the output devices and shut down the
amplier if temperatures exceed safe limits.
Most likely, you will never see this protection circuitry in action. However,
should a faulty condition arise, the amplier will stop playing and will
display “AMP PROTECTION“ on the front panel.
If this happens, turn the amplier off. Let it cool down for several minutes,
and attempt to identify and correct the problem that caused the protection
circuitry to engage. When you turn the amplier back on, the protection
circuit will automatically reset.
In most cases, the protection circuitry activates because of a fault condition
such as shorted speaker wires, or inadequate ventilation leading to an
overheating condition. In very rare cases, highly reactive or extremely low
impedance speaker loads could cause the protection circuit to engage.

15
To enable the continuous power mode select the ALWAYS option. To provide
power only when the RA-1572MKII is powered on, select the NORMAL
option. The default for USB POWER is set to NORMAL.
NOTE: The front panel power button must be in the ON position to
supply power to the rear panel USB connector.
NOTE: When the USB POWER is configured to ALWAYS the RA‑
1572MKII will consume additional power in standby mode to supply
USB power.
NOTE: Due to local power consumption regulations the USB POWER
function is not available in all markets.
• AUTO POWER OFF: The RA-1572MKII can be congured to automatically
power off if unused for a specied period. If no changes are made to the
unit within the specied “Auto Power Off” time the unit will automatically
go to STANDBY mode. The Auto Power Off timer will be restarted if
changes are made to the volume, source or playback. The default for
Auto Power Off is set to 20 MNIS.
Valid settings include:20 MNIS (Default), DISABLE, 1 HOUR, 2 HOURS,
5 HOURS, 12 HOURS.
• FIXED GAIN: Congures a Fixed Volume level for a specied input. To
enable this feature press the +/- buttons to select the desired xed volume
level for Aux, USB, PC-USB, Optical 1, Optical 2, Coax 1, Coax 2 or
Bluetooth. When enabled and the input with a Fixed Volume is selected,
the Volume level will immediately be set to the specied level.
Valid settings include: VARIABLE, FIXED 01-95, FIXED MAX.
• AUX VOL: VARIABLE (disabled) is factory default.
• USB VOL: VARIABLE (disabled) is factory default.
• PC-USB VOL: VARIABLE (disabled) is factory default.
• OPT1 VOL: VARIABLE (disabled) is factory default.
• OPT2 VOL: VARIABLE (disabled) is factory default.
• COAX1 VOL: VARIABLE (disabled) is factory default.
• COAX2 VOL: VARIABLE (disabled) is factory default.
• BTOOTH VOL: VARIABLE (disabled) is factory default.
NOTE: The Volume knob on the front panel and Volume +/‑ buttons on
the IR remote are disabled when the volume is Fixed. To disable this
feature set the Fixed Volume level to “Variable”.
• PC-USB AUDIO CLASS: Changes supported PC-USB Audio Class of the
attached device.
NOTE: Some computers attached to the PC‑USB do not support USB
Audio Class 2.0 and do not support 32/384 audio playback. If needed
the PC‑USB can be configured for USB Audio Class 1.0. Please refer
to your computer operating system for details.
•PC-USB AUDIO MODE: Change PC-USB Audio mode to support MQA
and PCM Audio up to 24bits or PCM Audio Only up to 32bits. When
PCM 32B is selected MQA audio is not supported. To playback MQA
the MQA/24B option must be selected.
Valid settings include: MQA/24B (Default), PCM 32B.
• NETWORK: Shows the network connection status and to view/congure
the network settings. If the network is properly congured and attached,
“Connected” will be displayed. To view or modify the network settings,
press the ENTER button.
The RA-1572MKII supports both DHCP and STATIC IP addressing. Select
the desired IP address method and press ENTER.
If DHCP is selected you can refresh IP address by pressing ENTER or press
MENU to view IP address information. Press the MENU button to toggle
through IP address settings. If the IP address is renewed the network will
be tested and connection status will be reported.
If STATIC IP address mode is selected you must congure all settings for the
network including IP Address, Subnet Mask, Gateway and DNS Server. Use
the up/down/left/right arrow buttons or +/- buttons to adjust the values and
press ENTER to move to the next value. When the proper IP information is
congured press MENU to go to the next setting. After entering the STATIC
IP address information the network will be tested and connection status
will be reported.
NOTE: For more information regarding network connection please
contact your authorized Rotel dealer.
NOTE: A network connection is not required for the RA‑1572MKII to
operate.
• MAIN: This shows the current software version loaded into the
RA-1572MKII. The software can be updated if the RA-1572MKII is properly
connected to the Internet.
• Press ENTER to check if a new software version is available.
• If a new software version is available press the + button on the front
panel or the up/right arrow buttons on the remote control to select
YES then press ENTER button to begin the software update process.
• The new software will be downloaded from the Internet. The
RA-1572MKII will power cycle when the software update is complete.
NOTE: Do NOT power off the RA‑1572MKII during the software
update process.
NOTE: It is recommended to Reset Factory Defaults after the software
update is complete.
• PC-USB: This shows current loaded software version for PC-USB processor.
• SIGNAL SENSE: Check if an audio signal is present on the congured
Signal Sense input. The RA-1572MKII monitors the data stream to
determine if there is audio. If there is no audio detected for 10 minutes,
the RA-1572MKII will enter Signal Sense Power Mode. When in Signal
Sense Power Mode and the RA-1572MKII detects audio on Signal Sense

16 RA‑1572MKII Stereo Integrated Amplier
input, the unit will automatically power on. To disable this function, select
the OFF option which is the factory default setting.
NOTE: When the SIGNAL SENSE function is activated, the RA‑1572MKII
will consume additional power in signal sense standby mode.
NOTE: Due to local power consumption regulations the SIGNAL SENSE
function is not available in all markets.
• FACTORY DEFAULT: This sets the unit back to the original state as when
it left the factory. Press the + button on the front panel or RIGHT arrow
button on the remote control to select <YES> then press the “ENTER”
button on the front panel or on the remote control.
NOTE: All previously configured options will be erased and reset to
the factory default settings.
Troubleshooting
Most difculties in audio systems are the result of incorrect connections,
or improper control settings. If you encounter problems, isolate the area
of the difculty, check the control settings, determine the cause of the fault
and make the necessary changes. If you are unable to get sound from the
RA-1572MKII, refer to the suggestions for the following conditions:
Power Indicator Is Not Illuminated
The Power Indicator ring around the power button and the basic items in
the Display window should be illuminated whenever the RA-1572MKII is
plugged into the wall power outlet and the POWER switch is pushed in. If
it does not light, test the power outlet with another electrical device, such as
a lamp. Be sure the power outlet being used is not controlled by a switch
that has been turned off.
Fuse Replacement
If another electrical device works when plugged into the power outlet,
but the Power Indicator still will not illuminated when the RA-1572MKII is
plugged into the wall outlet, it indicates that the internal power fuse may
have blown. If you believe this has happened, contact your authorized Rotel
dealer to get the fuse replaced.
No Sound
Check the signal source to see if it is functioning properly. Make sure the
cables from the signal source to the RA-1572MKII inputs are connected
properly. Check the wiring between the RA-1572MKII and the speakers.
Cannot Connect via Bluetooth
If you cannot pair your Bluetooth enabled device to the RA-1572MKII, delete
the memory of the previous connection on your device. On your device this
is often listed as “Forget this Device”. Then try to make the connection again.
Playable Audio Formats
USB Apple (iPhone, iPod, iPad)
Format Notes
Any supported le
loaded to Apple
device.
Any supported le loaded to Apple device. Phone may
resample depending on stored format. May exclude
Apps designed to play formats not originally supported
by the sending device.
APTX and AAC Bluetooth
Format Notes
Any format supported
by the sending device.
May exclude Apps designed to play formats not originally
supported by the sending device.
PC-USB
Format Notes
Format determined
by the Media Player/
Server software that
you use.
Any supported format by the PC software
PCM Audio:
44.1k, 48k, 88.2k, 96k, 176.4k, 192k, 384k
(16 bit 24 bit, and 32 bit)
MQA, MQA Studio (24 bit / 384k)
Roon Tested
Coax/Optical
Format Notes
SPDIF LPCM 44.1k, 48k, 88.2k, 96k, 176.4k, 192k
16 bit, 24 bit

17
Specications
Maximum Power Output 200 watts/channel, 4 ohms
Continuous Power Output 120 watts/channel, 8ohms
Total Harmonic Distortion < 0.018%
Intermodulation Distortion < 0.03%
(60 Hz : 7k Hz, 4:1)
Frequency Response:
Phono Input 20 Hz - 20k Hz, 0 ± 0.5 dB
Line Level Inputs 10 Hz - 100k Hz, 0 ± 0.5 dB
Damping Factor (20 Hz ‑ 20k Hz, 8 ohms) 300
Input Sensitivity / Impedance
Phono Input (MM) 2.1 mV / 47k ohms
Line Level Inputs (RCA) 270 mV / 100k ohms
Line Level Inputs (XLR) 440 mV / 100k ohms
Input Overload
Phono Input (MM) 32 mV
Line Level Inputs (RCA) 4 V
Line Level Inputs (XLR) 5.5 V
Preamplifier Output Level / Impedance 1.5 V / 470 ohms
Signal to Noise Ratio (A weighted)
Phono Input (MM) 80 dB
Line Level Inputs 100 dB
Digital Section
Frequency Response 10 Hz - 90k Hz (0 ± 2 dB, Max)
Signal to Noise Ratio (IHF ”A” weighted) 100 dB
Input Sensitivity/Impedance 0 dBfs / 75 ohms
Preamplifier Output Level 1.42 V (at -20 dB)
Coaxial/Optical Digital Signals SPDIF LPCM
(up to 192k Hz 24 bit)
PC-USB USB Audio Class 1.0
(up to 96kHz 24bit)
USB Audio Class 2.0
(up to 384kHz 32bit)*
*Driver installation required
MQA and MQA Studio
(up to 384kHz 24bit)
Roon Tested
Power Requirements:
USA: 120 volts, 60 Hz
EC: 230 volts, 50 Hz
Power Consumption 400 watts
Standby Power Consumption
Normal < 0.5 watts
Network wakeup < 2 watts
BTU (4 ohms, 1/8th power) 810 BTU/h
Dimensions (W x H x D) 431 x 144 x 358 mm
(17 x 5 5/8x 14 1/8ins.)
Front Panel Height 3U (132.6 mm, 5 1/4ins)
Weight (net) 13.6 kg, 29.98 lbs.
All specifications are accurate at the time of printing.
Rotel reserves the right to make improvements without notice.
Rotel and the Rotel Hi-Fi logo are registered trademarks of The Rotel Co, Ltd., Tokyo,
Japan.
“Made for iPod,” and “Made for iPhone,” means that an electronic accessory
has been designed to connect specically to iPod or iPhone, respectively, and
has been certied by the developer to meet Apple performance standards.
Apple is not responsible for the operation of this device or its compliance with
safety and regulatory standards. Please note that the use of this accessory
with iPod, or iPhone may affect wireless performance.
iPhone, iPod, iPod classic, iPod nano, and iPod touch are trademarks of
Apple Inc., registered in the U.S. and other countries.

RA-1572MKII Owner’s Manual Ver C 052421 English
The Rotel Co. Ltd.
Tachikawa Bldg. 1F.,
2-11-4, Nakane, Meguro-ku,
Tokyo, 152-0031
Japan
Rotel USA
Sumiko
6655 Wedgwood RD N, Suite 115
Maple Grove, MN 55311
USA
Phone: [phone] (option 2)
E-mail: ser[email protected]
Rotel Canada
Kevro International
902 McKay Rd. Suite 4
Pickering, ON L1W 3X8
Canada
Tel: [phone]
Rotel Europe
Dale Road
Worthing, West Sussex BN11 2BH
England
Phone: + 44 (0)1903 221 710
Fax: [phone]
www.rotel.com