Cyrus DAC XP+ User Instruction

ENGINEERED

TO ENTERTAIN

DAC X+

a b c d e f

ghi1)

MC-BUS

BALANCED OUT

L L

PRE

OUT 1

R R

DAC XP+

BALANCED OUT

L L

PRE

OUT 1

R R

1%

Fig 1

MC-BUS

230V
50/60Hz
25W

OUT

OUT 1

IN

USE PSX-R ONLY

IN 2IN 1

PRE

OUT 2

L

R

FIXED

IN 8

IN 7

MADE IN ENGLAND

a b c d e f ghi

MC-BUS

230V
50/60Hz
25W

OUT

OUT 1

IN

USE PSX-R ONLY

IN 2IN 1

PRE

OUT 2

L

R

FIXED

IN 8

IN 7

MADE IN ENGLAND

1$

Cyrus CD player

MC-BUS out

IN 3

IN 5

IN 6

IN 4

Cyrus DAC X+/XP+

MC-BUS out

MC-BUS in

1!1@

1)

IN 3

IN 5

IN 6

IN 4

Cyrus Tuner

MC-BUS out

MC-BUS in

Cyrus Amplifier or
Power Amplifier

MC-BUS out

MC-BUS in

1!1@1#

Fig 3

DAC X+

DAC XP+

a

b

a b

d

CD

Sample rate 44.1kHz

INPUT

c d e

-27

CD

Sample rate 44.1kHz

INPUT

MUTE BAL SETUP

e

SETUP

DAC X

fi

DAC XP

Fig 4a

Fig 4b

Digital Filter Response

Fig 4c

Small Input Names

Fig 4d

< >

Fig 4e

Phase

Normal

Fast Roll-off

Display mode

Input name

Input 1

DVD

Offset

Input 7

+4dB

Fig 2

fghi

Fig 4

Cyrus DAC X+, Cyrus DAC XP+ User Instructions

f

p

IMPORTANT! Read before operating this equipment!

CAUTION: The exclamation mark is to draw your attention

to important instructions and safety procedures in this
manual.

ATTENTION: The lightning flash warns you of the risk o
electrical shock presented by components inside this

roduct. Unauthorised personnel must not open this unit.

WARNING: To reduce the risk of electrical shock do not remove any unit covers
or panels. There are no user serviceable parts in this product.

WARNING: To reduce the risk of electric shock, do not expose this equipment to
rain or moisture.

HEED WARNINGS: All warnings on the product and in the operating
instructions should be adhered to.

READ ALL THE INSTRUCTIONS: All the safety and operating instructions
should be read before the product is operated.

RETAIN INSTRUCTIONS: The safety and operating instructions should be
retained for future reference.

FOLLOW INSTRUCTIONS: All operating and use instructions should be
followed.

CLEANING: Unplug this product from the mains before cleaning. Do not use
liquid or aerosol cleaners. Use a damp cloth for cleaning.

WATER AND MOISTURE: Do not use this product near water - for
example, near a bath tub, wash bowl, kitchen sink, or laundry tub, in a
wet basement; or near a swimming pool and the like. The product must
not be exposed to dripping or splashing and no objects filled with liquids,
such as vases, shall be placed on the product.

HEAT: The product should be situated away from heat sources such as
radiators, stoves, or any other products (including amplifiers) that produce heat.

VENTILATION: Slots and openings in the cabinet are provided for ventilation, to
ensure reliable operation of the product and to protect it from overheating and
these openings must not be blocked or covered. The openings should never be
blocked by placing the product on a bed, sofa, rug or similar surface. This
product should not be placed in a built-in installation such as a bookcase or rack
unless proper ventilation is provided or the manufacturer's instructions have been
adhered to.

OBJECT OR LIQUID ENTRY: Never push objects of any kind into this product
through openings as they may touch dangerous voltage points or short-out parts
that could result in a fire or electric shock.

ACCESSORIES: Do not place this product on an unstable cart, stand, tripod,
bracket, or table. The product may fall, causing serious injury to a child or adult,
and serious damage to the product. Use only with a cart, stand, tripod, bracket or
table recommended by the manufacturer, or sold with the product. Any mounting
of the product should follow the manufacturer's instructions, and should use a
mounting accessory recommended by the manufacturer.

ATTACHMENTS: Do not use attachments not recommended by the product
manufacturer as they may cause hazards

MOVING THE PRODUCT: A product and cart

combination should be moved with care. Sudden stops,
excessive force, and uneven surfaces may cause the
product and cart to overturn.

POWER SOURCES: This product should be operated only from the type of
power source indicated on the marking label. If you are not sure of the type of
power supply to your home, consult your product dealer or local power company.
For products intended to operate from battery power, or other sources, refer to
the operating instructions.

OVERLOADING: Never overload wall outlets, extension cords, or integral
convenience receptacles. This can result in an increased risk of fire or electric
shock.

.

POWER CORD PROTECTION: Power supply cords should be routed so that
they are not likely to be walked on or pinched by items placed upon or against
them, paying particular attention to cords at plugs, convenience receptacles, and
the point where they exit from the product.
NAKED FLAMES: No naked flame sources, such as candles, must be
placed on this product.

be exposed to excessive heat such as sunshine, fire or the like.

LIGHTNING: For added protection for this product during a lightning storm, or
when it is left unattended or unused for long periods of time, unplug it from the
wall outlet and disconnect the antenna or cable system. This will prevent
damage to the product due to lightning and power-line surges.

BATTERIES: Warning : Batteries shall not be exposed to excessive heat
such as sunshine, fire or the like.

Batteries (battery pack or batteries installed) shall not

CAUTION! POLARISED CONNECTOR (CANADA and USA):

To prevent electrical shock, match wide blade of plug to wide slot, fully insert.
Do not alter or remove this plug if it does not fit your mains power socket. Have a
suitable socket installed by a competent electrician.

POWER SUPPLY:

The moulded IEC connector of the AC cord supplied plugs into the power
inlet 1@ on the rear of the unit.

The mains supply requirement for your Cyrus unit is marked on a label on
the rear panel. Before connecting, check that this voltage is the same as
your mains supply.

230V Products: Voltage Range 220V-240V
115V Products: Voltage Range 110V-120V

If you move to an area with a different mains voltage, contact your local
Cyrus distributor to have your product converted.

There are no user replaceable fuses in this unit.

SERVICING:

Do not attempt to service this product yourself as opening or removing covers
may expose you to dangerous voltage or other hazards. Refer all servicing to
qualified service personnel.
CONDITIONS REQUIRING SERVICE: Unplug this product from the wall outlet
and refer servicing to qualified service personnel when:

• When the power supply cord or plug is damaged.

• If liquid has been spilled, or objects have fallen into the product.

• If the product has been exposed to rain or water.

• If the product has been dropped or damaged in any way.

• If the product does not operate normally by following the operating

instructions. (Adjust only those controls that are covered by the
operating instructions. Improper adjustment of other controls may result
in damage requiring extensive work by a qualified technician to restore
the product to its normal operation).

• When the product exhibits a distinct change in performance.

REPLACEMENT PARTS: When replacement parts are required, be sure the
service technician has used replacements specified by the manufacturer or have
the same characteristics as the original part. Unauthorised substitutions may
result in fire, electric shock, or other hazards.
SAFETY CHECK: Upon completion of any service or repairs to this product, ask
the service technician to perform safety checks to determine that the product is in
proper operating condition.

PRODUCT SERVICE CENTRES

For product service or technical advice, contact only authorised Cyrus
service centres. Contact details for Cyrus distributors may be found on
the Cyrus website at www.cyrusaudio.com.

1

Cyrus DAC X+, Cyrus DAC XP+ User Instructions

Welcome to the world of Cyrus!

Congratulations on your choice of Cyrus Audio-Visual products. Our state-of-the­art design technology and outstanding quality of manufacture has won
countless awards around the world. We are confident that you will derive
great pleasure from owning a product from one of the most recognised and
respected manufacturers of hi-fi equipment.

Now is a good time to register your new Cyrus product. Registration takes
only a few minutes, brings the added benefit of a full two year factory warranty
and adds you to our mailing list for future product updates and upgrades. To
register, visit www.cyrusaudio.com and click the ‘Login/Register’ link.

Please read these instructions carefully before commencing installation. They
provide full guidance to help you install your Cyrus DAC safely and correctly.

Preparations for Installation

Before installing your DAC check that the following items are included in the
accessory box.

• Power Cable

• 2 MC-BUS phono cables

• Remote Control Handset (DAC XP+ only)

• 2 AAA Batteries (DAC XP+ only)

After removing these items, please retain the packaging.
Install the DAC in a well ventilated location away from sources of high

temperature, dust or humidity. Never stand the DAC under another unit or on
any surface likely to hamper its cooling or ventilation.

IMPORTANT NOTE:- To avoid damage to your system, always ensure that
mains power is disconnected from all system components until installation is
complete.

Index

Important safety instructions ............ DAC X+ & DAC XP+ .............................. 1

Introduction ....................................... DAC X+ & DAC XP+ .............................. 2

Installation ........................................ DAC X+................................................... 3

Setting up ......................................... DAC X+................................................... 4

Operation .......................................... DAC X+................................................... 5

Installation ........................................ DAC XP+ ................................................ 6

Setting up ......................................... DAC XP+ ................................................ 8

Operation .......................................... DAC XP+ ................................................ 9

Remote control ................................. DAC XP+ .............................................. 10

Troubleshooting ................................ DAC X+ & DAC XP+ ............................ 12

Warranty ........................................... DAC X+ & DAC XP+ ............................ 12

Specifications ................................... DAC X+ & DAC XP+ ............................ 13

Model Differences and Upgrades

There are two model versions in the DAC X+ series –

• The DAC X+ upsampling audio D/A converter. The DAC X+ features dual
mono DACs and a balanced audio design throughout the analogue
domain. The DAC X+ is a high-end upgrade for a CD transport or other
digital audio sources, connecting between the digital outputs of the
sources and a preamplifier.

• The DAC XP+ shares digital technology with the DAC X+, adding a fully
balanced preamplifier stage with additional analogue audio inputs. The
DAC XP+ can drive a power amplifier directly and replaces a
conventional analogue pre-amplifier in a high-end audio system.

This handbook includes instructions for the connection and operation of both
the DAC X+ and DAC XP+. Refer to the index to find instructions for the
model you own.

In sections that are common to both models, model differences are shown in
the text where necessary.

A factory upgrade is available for the DAC X+ to full DAC XP+ specification,
adding the balanced preamplifier stage.

2

Cyrus DAC X+ User Instruction

INSTALLATION (DAC X+)

Key to the rear panel drawing (Fig.1)

1. Dual balanced outputs 9. Input 5 Digital

2. Fixed level DAC outputs 10. Input 6 Digital

3. MC-BUS connections 11. PSX-R connection

4. Optical digital output 12. AC mains inlet

5. Input 1 Optical

6. Input 2 Optical

7. Input 3 Digital

8. Input 4 Digital

NOTE: When connecting inputs to the DAC X+, ensure that only digital audio
sources are connected to ‘Digital’ inputs.

Connecting Digital Audio Sources

The digital audio inputs of the DAC X+ are compatible with a number of
different digital audio sources. These include-

• Digital Audio output from a CD player

• DVD players (for replay of 2 channel PCM programs only)

• Digital tape/disc recorders

• Digital Radio

• Digital Satellite receivers (for replay of 2 channel PCM programs only)

Using a suitable Toslink optical or Digital phono interconnect, connect each
digital audio source to one of the inputs 1~6. Make a note of the input number
used for each source as the inputs of the DAC X+ can be re-named at the set­up stage.

Connecting the DAC X+ to an amplifier

The DAC X+ requires an external amplifier or preamplifier to provide input
selection and volume control functions for the system, and to drive the
speakers. Two output options are available from the DAC X+ via either
standard RCA phono outputs, or via balanced audio connections.

CAUTION:- Do not connect power amplifiers to the Fixed output.
Connecting to amplifiers with phono inputs
With suitable phono interconnects, connect from the Fixed Out terminals b to

a suitable amplifier line input. All line level inputs, such as CD, TU, AU, AV
are suitable. We recommend selection of an input that corresponds to the
primary source connected to the DAC X+. If the primary source is a CD
player, the CD input is recommended, if the primary source is a DVD player,
the AV input is recommended etc. For Cyrus amplifiers with optional MC-BUS
connection, see also the section ‘MC-BUS connections’.

Connecting to amplifiers with balanced inputs

If the amplifier is equipped with balanced inputs, the balanced outputs of the
DAC X+ may be used. With suitable balanced interconnects fitted with XLR
connectors, connect from the Balanced Output terminals a of the DAC X+ to
the input of the amplifier. Dual balanced outputs are provided for connection
to a second amplifier or recording device with balanced input.

MC-BUS Connections

MC-BUS operation

Connecting the MC-BUS sockets c of the DAC X+ to those of other Cyrus
products is an option that provides unified system power control. With MC­BUS connections established the power function of all connected Cyrus
components may be controlled from the system amplifier or its remote control.

All connected components will also set to Standby when the amplifier is set to
Standby.

MC-BUS connection
An MC-BUS loop is established by connecting single phono cables from the

MC-BUS output of one unit to the MC-BUS input of another. Complete the
loop by returning the MC-BUS output of the final component to the MC-BUS
input of the first. The drawing in Fig 3 shows an example of MC-BUS wiring
for a Cyrus DAC X+ with a CD player, tuner and amplifier.

MC-BUS configuration
Within a Cyrus system, the DAC X+ may be connected to either the CD, TU,

AU or AV input, as selected by the user to best match their system
components. To ensure that the DAC X+ will power on when the correct input
is selected, the MC-BUS response may be configured accordingly.

The factory response enables the DAC X+ to switch on when the CD input is
selected from the amplifier. To change the response, refer to the paragraph
‘DAC X+ Connected to’ in the section ‘Setting up the DAC X+’.

Connecting to the Digital Output

An optical Digital Output d is provided for the connection of another digital
device to the DAC X+. This may include such devices as a multi-channel
surround decoder or a digital tape/disc recorder. The currently selected digital
input signal will be routed to this output.

External Regulated Power Supply - PSX-R

The PSX-R is a unique DC power supply that will upgrade the sonic
performance of your DAC X+ and other Cyrus products. When a DAC X+ /
PSX-R combination is installed, the analogue section of the DAC stage is
powered from this clean, stable power source while other requirements are
supplied internally. This ensures complete isolation of the sensitive analogue
sections reducing AC mains-borne noise and power supply ripple.

To connect the PSX-R to the DAC X+, plug the connector on the umbilical
cord of the PSX-R into the Multi-Pole socket on the rear of the DAC X+ 1!.
You will need a mains supply for both units.

NOTE: Connection of a PSX-R is detected automatically, so no internal
adjustments are required.

3

Cyrus DAC X+ User Instruction

SETTING UP THE DAC X+

There are many configuration options available in the setup menu to
customise the DAC X+ to best match each individual system.

The setup sequence is activated by pressing the front panel setup button f.
Each press of the setup button will step through each available setup option
until ‘Storing settings’ is shown on the display. When each setup screen is
displayed, changes may be made to the settings by moving the rotary knob.

Settings will be stored automatically after 5 seconds of inactivity. The setup
menu options are shown here –

Setup

Phase adjust
Digital filter
Display options
Connected to:
Name Input 1
Name Input 2
Name Input 3
Name Input 4
Name Input 5
Name Input 6
Storing settings Save settings and exit setup

Some examples of the setup display screens are shown in Fig 4.
Phase adjust (Fig 4a)
This menu option sets the audio phase for the DAC. The factory setting is

normal. Some listeners may prefer the inverted setting with their systems or
for when playing particular recordings.

Digital Filter Response (Fig 4b)

This menu option gives two settings for the digital filtering of the DAC stage.
Choose your preference of Fast or Slow roll-off by auditioning some of your
favourite tracks with each setting.

DACX Connected to: (Fig 4c)
This option may be used to change the remote control and MC-BUS response

of the DAC X+. From the factory, the DAC X+ will power on in response to a
CD select command from a Cyrus remote control or from a CD select signal
sent via MC-BUS, so if the DAC X+ is connected to the CD input of the
amplifier, no change will be required to this setting. If, however, the DAC X+ is
connected to the TU, AU or AV inputs of the amplifier, the appropriate remote
and MC-BUS responses may be selected through this menu option to ensure
power-on compatibility with the amplifier.

Input display (Fig 4d)
There are two modes of display operation. The small setting will show a two-

line display with the selected input in the display centre and the current
sample rate/lock status at the bottom. The large setting will show a single line
display with a larger input legend.

Input names (Fig 4e)
When the DAC X+ leaves the factory, the input names are set to correspond

to the rear panel connections, for example Input 1 will display as Input 1.
The name of any input may be changed to a choice from the following list-

• No source (off)

• LaserDisc, DVD, DVD 2, DVD-A, CD, CD 2

• Linkserver, Linkport

• Jukebox, Phono

• Tuner, DAB, TV, AV, Cyrus AV, Satellite, Satellite 2, Cable

• Video, VCR, VCR 2, Tape, MiniDisc, DAT

• PC, Games, Keyboard, Aux, AV Direct, Stream X

To change the names of the inputs, we recommend making a list of each
input number with your preferred name from the choices above before setting
the names.

Select normal or inverted
Select fast or slow roll off
Select large or small
Select CD, TU, AU or AV
Choose a name for input 1 from the name list
Choose a name for input 2 from the name list
Choose a name for input 3 from the name list
Choose a name for input 4 from the name list
Choose a name for input 5 from the name list
Choose a name for input 6 from the name list

No source is a special function name, used to name inputs that have no
source connected to them. These input numbers will not then appear in the
input selector sequence.

4

Cyrus DAC X+ User Instruction

RESTORING FACTORY SETTINGS

You can also restore all configuration options to the initial default settings that
were applied at the factory.

NOTE: This operation is not reversible.
To restore factory settings, disconnect mains power from the unit. Now re-

connect mains power while holding down the Standby key.

OPERATION (DAC X+)

Key to the front panel drawing (Fig.2a):

1. Standby key 9. Input select

2. Standby light

4. Display window

5. Setup adjust

6. Setup select

Switching On

The mains power to the DAC X+ should normally be left on unless left
unattended for a long period when the mains power at the wall socket should
be switched off or the product disconnected from the AC supply.

When power is applied, the STANDBY key a is used for power control. The
Standby light b shows red when the DAC X+ is in Standby and green when
operational.

Selecting an input

Inputs may be selected from the front panel INPUT SELECT buttons i. As a
new input is selected the input name/number are displayed briefly. The main
display indication for input can be selected from the two options available
from the setup menu.

The factory default ‘small input’ display option will also identify the sample
rate of the selected source and indicate ‘Invalid Audio Format’ for program
material which the DAC X+ will not decode (such as multi-channel digital
sound from DVD players or satellite receivers).

Remote control operation

Cyrus system remote controls

For convenience of operation, the DAC X+ will respond to CD system select
commands from a Cyrus amplifier or system remote control, switching on
each time the CD system is selected and switching off with power off
commands. If the DAC X+ is connected to a different input (TU, AUX or AV)
the remote response may be changed through the set-up menu to match the
connected input. Refer to the paragraph ‘DAC X+ connected to:’ in the
‘Setting up the DAC X+’ section to change the response.

5

Cyrus DAC XP+ User Instructions

INSTALLATION (DAC XP+)

Key to the rear panel drawing (Fig.1)

1. Dual balanced preamp outputs 9. Input 5 Digital

2. Fixed level DAC outputs 10. Input 6 Digital

3. MC-BUS connections 11. PSX-R connection

4. Optical digital output 12. AC mains inlet

5. Input 1 Optical 13. Input 7 Analogue

6. Input 2 Optical 14. Input 8 Analogue

7. Input 3 Digital 15. Dual preamp outputs

8. Input 4 Digital

NOTE: When connecting inputs to the DAC XP+, ensure that only digital
audio sources are connected to ‘Digital’ inputs.

Connecting Digital Audio Sources

The digital audio inputs of the DAC XP+ are compatible with a number of
different digital audio sources. These include-

• Digital Audio output from a CD player

• DVD players (for replay of 2 channel PCM programs only)

• Digital tape/disc recorders

• Digital Radio

• Digital Satellite receivers (for replay of 2 channel PCM programs only)

Using a suitable Toslink optical or Digital phono interconnect, connect each
digital audio source to one of the inputs 1~6. Make a note of the input number
used for each source as the inputs of the DAC XP+ can be re-named at the
set-up stage.

Connecting Analogue Audio Sources

Analogue Inputs 7-8 are available for the connection of stereo analogue audio
sources to the DAC XP+. Inputs 7-8 are intended for use with analogue
program sources which include-

• Analogue output from CD/DVD Players

• Televisions

• Analogue Satellite Receivers

• FM Radio tuners

• Analogue VCRs/Tape recorders

• Surround decoders

Connecting a Cyrus Surround Sound decoder

In a Cyrus multi-channel surround sound system the surround decoder may
be connected through the DAC XP+ to share the same front channel power
amplifiers.

In this case, connect a stereo phono interconnect from the front channel
outputs of the surround decoder to the Input 7 sockets 1# of the DAC XP+.
For this system to function correctly both the DAC XP+ and the Cyrus
surround decoder must be included in an MC-BUS connection loop and the
‘Cyrus AV’ input name must be set for Input 7 (see ‘MC-BUS’ section and
‘Input names’ in the ‘Setup menu’ section).

When set up in this way, the DAC XP+ will automatically check for the
presence of the decoder when the ‘Cyrus AV’ input is selected, then lock the
DAC XP+ volume setting to an appropriate level.

Connecting a Surround Sound decoder (other brand)

If your system includes a multi-channel surround sound decoder (but not a
Cyrus model), it may be connected through your DAC to drive the front
channel speakers.

In this case, connect a stereo phono interconnect from the front channel
outputs of the surround decoder to one of the Analogue Inputs of the DAC.
For this system to function correctly, the ‘AV Direct’ input name must be set
for the input used (see ‘Input names’ in the ‘Setup menu’ section).

When set up in this way, the DAC will automatically lock its volume setting to
a fixed level to match the output of the surround decoder.

CAUTION: The ‘AV Direct’ input name should only be used for surround
decoders that include a volume control, as the volume control of your DAC
will be fixed at a very high level.

Connecting to the Digital Output

An optical Digital Output d is provided for the connection of another digital
device to the DAC XP+. This may include such devices as a multi-channel
surround decoder or a digital tape/disc recorder. The currently selected digital
input signal will be routed to this output.

Connecting Power amplifiers

External power amplifiers are necessary to drive the system speakers. Both
stereo and high power monoblock Cyrus power amplifiers are available to
partner the DAC XP+ and a choice of RCA phono or balanced outputs is
provided.

NOTE:- Take care to connect each of the DAC XP+ output channels to the
correct power amplifier and loudspeaker.

Connecting to power amplifiers with phono inputs
With suitable phono interconnects, connect from the Pre Out terminals 1% to

the power amplifier inputs. The system loudspeakers may then be connected
to each power amplifier. Dual outputs are provided to enable the connection
of two amplifiers for bi-amping.

Connecting to power amplifiers with balanced inputs

With suitable Balanced interconnects, connect from the Balanced Output
terminals a to the power amplifier inputs. The system loudspeakers may then
be connected to each power amplifier. Dual outputs are provided to enable
the connection of two amplifiers for bi-amping.

Fixed output

The Fixed output is connected directly to the internal DAC stage of the DAC
XP+ and bypasses the internal preamplifier and volume control. It may be

used to feed the DAC stage output to an external system preamplifier, or for
high quality tape recording from digital sources.

NOTE:- Analogue inputs 7 and 8 are not routed to the Fixed output.
CAUTION:- Do not connect power amplifiers to the Fixed output.

6

Cyrus DAC XP+ User Instructions

External Regulated Power Supply - PSX-R

The PSX-R is a unique DC power supply which will upgrade the sonic
performance of your DAC XP+ and other Cyrus products. When a DAC XP+ /
PSX-R combination is installed, the analogue section of the DAC stage is
powered from this clean, stable power source while other requirements are
supplied internally. This ensures complete isolation of the sensitive analogue
sections reducing AC mains-borne noise and power supply ripple.

To connect the PSX-R to the DAC XP+, plug the connector on the umbilical
cord of the PSX-R into the Multi-Pole socket on the rear of the DAC XP+ 1!.
You will need a mains supply for both units.

NOTE: Connection of a PSX-R is detected automatically, so no internal
adjustments are required.

MC-BUS Connections

MC-BUS operation

Connecting the MC-BUS sockets c of the DAC XP+ in an MC-BUS system
provides unified system power control. With MC-BUS connections established
the power function of all connected Cyrus components may be controlled from
the DAC XP+ front panel or remote control. Refer to the following table for
Cyrus components that will be activated by the DAC XP+ when the inputs
have been named as listed -

Input name Power on response

CD CD players, power amplifiers
TUNER Tuners, power amplifiers
AV DVD players, power amplifiers
CYRUS AV DVD players, surround decoders, power amplifiers
DVD DVD players, power amplifiers

Follow the instructions in section ‘Setting up the DAC XP+’ to set the listed
input names.

All connected components will also set to Standby when the DAC XP+ is set
to Standby.

MC-BUS connection
An MC-BUS loop is established by connecting single phono cables from the
MC-BUS output of one unit to the MC-BUS input of another. Complete the
loop by returning the MC-BUS output of the final component to the MC-BUS
input of the first. The drawing in Fig 3 shows an example of MC-BUS wiring
for a Cyrus DAC XP+ with a CD player, tuner and power amplifier.

7

Cyrus DAC XP+ User Instructions

SETTING UP THE DAC XP+

There are many configuration options available in the setup menu to
customise the DAC XP+ to best match each individual system.

The setup sequence is activated by pressing the front panel set up button f.
Repeated pressing of the setup button will step through each available setup
option until ‘Storing settings’ is shown on the display. When each setup
screen is displayed, changes may be made to the settings by rotating the
front panel volume knob.

The setup sequence will cancel after 5 seconds of inactivity.
The setup menu options are shown here –

Setup

Phase adjust
Digital Filter
Display Mode
Name Input 1
Name Input 2
Name Input 3
Name Input 4
Name Input 5
Name Input 6
Name Input 7
Name Input 8
Trim Input 7
Trim input 8
Storing settings Save settings and exit setup

Some examples of the setup display screens are shown in Fig 4.
Phase adjust (Fig 4a)
This menu option sets the audio phase for the DAC. The factory setting is

normal. Some listeners may prefer the inverted setting with their systems or
for when playing particular recordings.

Filter adjust (Fig 4b)
This menu option gives two settings for the digital filtering of the DAC stage.

Choose your preference of Fast or Slow roll-off by auditioning some of your
favourite tracks with each setting.

Display mode (Fig 4c)
There are three modes of display operation.
The ‘small input’ setting will show a three line

display with the volume reading at the top of
the display, the selected input in the display
centre and the current sample rate/lock
status at the bottom.

The ‘large input’ setting will show a two
line display with the volume reading at the
top and a larger input legend below.

The ‘large volume’ setting will display large
volume characters at the bottom of the
screen with the bargraph above.

Select normal or inverted
Select fast or slow roll off
Select large input, small input or large volume
Choose a name for input 1 from the name list
Choose a name for input 2 from the name list
Choose a name for input 3 from the name list
Choose a name for input 4 from the name list
Choose a name for input 5 from the name list
Choose a name for input 6 from the name list
Choose a name for input 7 from the name list
Choose a name for input 8 from the name list
Set the sensitivity for input 7
Set the sensitivity for input 8

-27

CD

Sample rate 44.1kHz

-27

CD

-27

-27dB

Input names (Fig 4d)

When the DAC XP+ leaves the factory, the input names are set to correspond
to the rear panel connections, for example Input 1 will display as Input 1.

The name of any input may be changed to a choice from the following list-

• No source (off)*

• LaserDisc, DVD, DVD 2, DVD-A, CD, CD 2

• Linkserver, Linkport

• Jukebox, Phono

• Tuner, DAB, TV, AV, Cyrus AV*, Satellite, Satellite 2, Cable

• Video, VCR, VCR 2, Tape, MiniDisc, DAT

• PC, Games, Keyboard, Aux, AV Direct*, Stream X.

To change the names of the inputs, we recommend making a list of each
input number with your preferred name from the choices above before setting
the names.

There are three special function input names marked *.
‘No source’ is used to name inputs which have no source connected to them.

These input numbers will not then appear in the input selector sequence.
‘Cyrus AV’ is reserved for the connection of Cyrus surround sound decoders.

When a Cyrus surround decoder is connected to an analogue input named
‘Cyrus AV’ the DAC XP+ will check the system for the presence of a Cyrus
surround decoder and, if found, lock out its volume control at a precise
setting. Normal volume operation will be restored when any other input is
selected.

‘AV Direct’ is reserved for the connection of non-Cyrus surround decoders to
an analogue input. This input name must only be used for this purpose as the
volume level will lock to a very high setting (-6dB) when AV Direct is selected.

Input trims (Fig 4e)

It is possible to adjust the sensitivity of
analogue inputs 7 and 8 by selecting the
appropriate trim option from the menu. This
enables the volume level when playing low or
high output source components such as tape
decks or tuners to be equalised with the
digital system sources.

Offset

Input 7

RESTORING FACTORY SETTINGS

You can also restore all configuration options to the initial default settings that
were applied at the factory.

NOTE: This operation is not reversible.
To restore factory settings, disconnect mains power from the unit. Now re-

connect mains power while holding down the Standby key.

+4dB

8

Cyrus DAC XP+ User Instructions

OPERATION (DAC XP+)

Key to the front panel drawing (Fig.2):

1. Standby key 6. Setup select

2. Standby light 7. Channel balance select

3. Remote eye 8. Mute

4. Display window 9. Input select

5. Level control and setup adjust

Switching On

The mains power to the DAC XP+ should normally be left on unless left
unattended for a long period when the mains power at the wall socket should
be switched off or the product disconnected from the AC supply.

When power is applied, the STANDBY key a is used for power control. The
Standby light b shows red when the DAC XP+ is in Standby and green when
operational.

Selecting an input

Inputs may be selected from the front panel INPUT SELECT buttons i or
with the remote control INPUT SELECT keys. As a new input is selected the
input name/number are displayed briefly. The main display indication for
input/volume can be selected from the three options in the setup menu.

The factory default ‘small input’ display option will also identify the sample
rate of the selected source and indicate ‘Invalid Audio Format’ for program
material which the DAC XP+ will not decode (such as multi-channel digital
sound from DVD players or satellite receivers).

Volume and Balance

The level control e of the DAC XP+ performs the dual functions of volume
and balance.

Volume: In normal mode the level control sets the volume in 1dB steps. A
bargraph and a numeric scale at the top of the display window show the
current volume setting. The last used volume setting is stored when the unit is
set to standby.

If the volume is left at an abnormally high volume level before entering
standby, the level will be reduced automatically to a safe level of –15dB for
next use.

Press the balance control key g to change the mode of the front

Balance:

panel rotary control e to set Left/Right Balance. The volume display will also
change to show a graphic and numeric display of the balance setting.

Mute

Pressing the MUTE Key h will mute the volume to minimum level without
disturbing the existing volume setting. When muted the display will show that
volume is muted. Move the volume knob up or press the Mute key to fade
back up to the original volume setting.

Programmable Input Sensitivity

You may find an audible difference in level when switching from digital inputs
to one of the two analogue inputs due to the differing outputs of your source
components. The unique calibration memory of the DAC XP+ can be
programmed to match the sensitivity of these inputs with reference to the
digital inputs. Input sensitivity settings are made through the setup menu.
Refer to the section ‘Setting up the DAC XP+’ for more details.

9

Cyrus DAC XP+ User Instructions

A

A

A

OPERATION WITH THE AVRS7.2 REMOTE CONTROL
(DAC XP+)

The DAC XP+ is supplied with the Cyrus AVRS7.2 remote control which will
control Cyrus CD players, DVD players, tuners and surround sound decoders
in addition to the DAC XP+.

System select keys

Commands may be sent to different Cyrus system components by selecting
the appropriate system select key on the handset. These keys are marked
CD, TU/DAB, AV, AV-S and AV SETUP. The CD, TU/DAB, AV, AV-S keys
will flash when any command is transmitted to show which type of product is
under control. Commands to a Surround Decoder from the AV SETUP system
will flash the AV-S indicator.

To identify which type of product is under control, the CD, TU/DAB, AV, AV-S
keys flash when any command is transmitted. Commands to a surround
decoder from the AV SETUP system will flash the AV-S indicator.
The remote control will send commands to most products within the Cyrus
range and is compatible for use within two types of Cyrus system -

• Stereo audio systems including a DAC XP+ as preamplifier.

• Multi-channel AV systems including both a DAC XP+ digital

preamplifier and a Cyrus surround decoder.

Refer to the following section as appropriate to the configuration of your
system.

Controlling a stereo system

A stereo system may include the DAC XP+, a CD player, tuner or DVD player.
The following commands may be sent -

• Pressing CD will send commands to a Cyrus CD player. This key will

also switch on the DAC XP+ and select an input named CD.

• Pressing TU/DAB will send commands to DAB radios or FM Tuners.

This key will also switch on a DAB radio or FM Tuner and select an
input named Tuner. To change between DAB or FM operation, hold
down the TU/DAB key for 3 seconds until the light changes colour. The
key will light green when set for DAB commands or red when set for FM
tuner commands. NOTE:- The FM band of a DAB radio is not selected
in this way, the BAND key is used for this purpose.

• Pressing AV will send commands to a DVD player. This key will also

switch on a DVD player and select an input named AV, Cyrus AV or AV
Direct on the DAC XP+.

The DAC XP+ will respond to the volume, balance, mute and input keys when
any of the above systems are selected. In the above examples, direct access
input select will only function when these inputs have been named using the
DAC XP+ setup menu.

NOTE - The AV-S and AV SETUP keys are not used to control this system.

Controlling a multi-channel AV system that includes both a DAC XP+
and a Cyrus surround decoder

This system will include both a DAC XP+ and a Cyrus surround decoder with
a CD player, tuner or DVD player. In such a system it is expected that -

• Stereo sources will be connected directly to the inputs of the DAC XP+.

• The DVD player will connect directly to the surround decoder and the

front channel outputs of the surround decoder will connect to the AV
input of the DAC XP+.

• An MC-BUS connection loop will also be set up between at least the
DAC XP+ and the surround decoder.

The following commands may be sent -

• Press CD to send commands to CD players. This key will also switch
on a CD player and select an input named CD on the DAC XP+.
Volume, balance, input and mute commands will also be sent to the
DAC XP+.

• Pressing TU/DAB will send commands to DAB radios or FM Tuners.
This key will also switch on a DAB radio or FM Tuner and select the
TU input of an amplifier. To change between DAB or FM operation,
hold down the TU/DAB key for 3 seconds until the light changes
colour. The key will light green when set for DAB commands or red
when set for FM tuner commands. NOTE:- The FM band of a DAB
radio is not selected in this way, the BAND key is used for this
purpose.

• Press AV-S to send commands to a DVD player. This key will also
switch on a DVD player and select the surround decoder via the ‘Cyrus
AV’ input of the DAC XP+. Volume, balance, input and mute
commands will be sent to the surround decoder.

• Press AV SETUP to activate the blue keys and those with additional
blue legends to send setup commands to the surround decoder, such
as speaker balance settings, mode settings and input naming.

In the above examples, input select will only function when these inputs have
been named using the DAC XP+ setup menu.
NOTE - The AV key is not used to control this system.

10

b
d

h
i
1$
1%

1^
1*

1(

2)
2@
2$

2%

CD TU/DAB AV

MPLIFIER DVD

IN

ZOOM

NGLE

OK

ADJ- ADJ+

DISP

123

5

4

789

0

SETUP MENU

V

SETUP

OFF

AV-S

NIGHT

6

T-C

TREBLEBASS

LIPSYNC NOISEMODE

a
c
e

f
g

DSP

1)
1!
1@
1#
1&

2!
2#
2^

2&

Cyrus DAC XP+ User Instructions

A

A

–

y

A

-

k

k

f

A

–

A

A

A

A

y

A

DAC XP+, CD,
DAB and FM tuner
commands

DAC XP+, DVD
and AV -Surround
commands

CD MODE DAB MODE

1 Power off all systems

2

3
4 DAC XP+ input select
5 DAC XP+ balance select
6 DAC XP+ volume control
7 DAC XP+ mute
8 - Select station on displa

9
10 Next/previous trac
11 Next track
12 Search forward
13 Previous trac
14 Search reverse
15 - OK key to select menu options
16 Display off Display mode
17 Play/pause/stop*
18 Display mode
19 Numeric keypad
20 Memory store
21 - ­22 - ­23 - Menu select
24
25 - Record to memory card
26 - DAB/FM/Memory card band select
27 - Mono/stereo when playing FM

AV (DVD & amp) MODE

1 Power off all systems

2

3

4 DAC XP+ input select +/-

5 DAC XP+ balance mode

6 DAC XP+ volume control

7 DAC XP+ mute

8 DVD Quick access zoom

9 DVD Quick access angle
10 DVD Next/previous chapter/title
11
12
13 ­14
15 OK key to select DVD menu options
16 DVD On-screen displa
17 DVD transport functions
18 ­19 DVD Chapter/title direct access
20 DVD Program store
21 DVD Title or Chapter mode
22 DVD Player setup
23 DVD Disc menu

24

25 ­26 ­27 -

udio phase invert

Cursor keys for navigating the DVD on-screen menu options

CD, DAB, TU or

DAC XP+, CD, DAB, FM tuner, DVD power on

V SURROUND COMMAND MODE SELECT

Cursor keys for navigating the on-

Play/pause for replay from memory card

V SETUP MODE SELECT

CD, DAB, TU or AV COMMAND MODE SELECT

DAC XP+, CD, DAB, FM tuner, DVD power on

DVD and Surround decoder power on

V COMMAND MODE SELECT

DAC XP+ input select

see table below

Display next/previous station

screen menu options

Timer record mode

Numeric keypad

Preset information

see table below

*early Cyrus CD players will respond to Play/Stop only

V-S (DVD & decoder) MODE

DAC XP+ input select

V-S COMMAND MODE SELECT

Surround decoder input select +/-

-

Surround decoder volume control

Surround decoder mute

V SETUP MODE SELECT

Surround decoder power on

TU MODE (FM)

-

-

Next/previous preset

Next preset

Scan up

Previous preset

Scan down

-

Display of

-

-

Preset select

Preset store

-

-

-

-

-

Stereo/mono

AV-SETUP MODE

-

-

Decoder Night & DSP functions

-

dj +

dj -

-

-

-

-

Speaker select keys

-

-

Bass control select

Treble control select

Mode select

Lipsync adjust

Decoder noise mode

11

Cyrus DAC X+, Cyrus DAC XP+ User Instructions

TROUBLESHOOTING GUIDE

If your Cyrus DAC is not operating properly, disconnect the power and
carefully check all connections and the set-up procedure using the notes in
this handbook. If problems persist, the checklists below may help.

If you are in any doubt, consult your dealer.

No sound from any speaker with any source

Amplifiers not switched on. Switch on all of the system

Outputs to amplifiers not correctly
connected.

No sound from one source

Incorrect source selected. Check source selection.
Input named incorrectly. Check that the input is correctly

Pause may have been set. Check the source.
Incompatible audio format. Check the audio format of the

Input not correctly connected. Switch off the power to the audio

Loud noises from the speakers with certain sources or discs

Incompatible audio format. Check the audio format of the

No sound from one loudspeaker

Balance control at extreme limit. Centralise Balance control.
Does your speaker have fuses? Check speaker, replace fuses.
Power amplifier faulty (DAC XP+

only).

Remote control not operating

Remote control not operating (lights
on remote are weak or not flashing
when commands are sent).

Remote control not operating (lights
on remote are flashing correctly).

If a fault condition still remains, return the DAC (together with the PSX-R if
you are using one) to your Cyrus appointed dealer or an authorised Service
Centre.

amplifiers.
Switch off the power to the audio

system and check that connections
have been correctly made from the
DAC to the system amplifiers and
speakers.

named.

disc/tape to ensure it is compatible
with the DAC.

system and check that connections
have been correctly made from the
source to the DAC.

disc/tape to ensure it is compatible
with the DAC.

The power amplifier(s) can be tested
by exchanging left and right output
channels from the DAC XP+. Switch
off the power to the audio system
before making any changes to the
connections.

Check batteries.

Ensure that the correct system has
been selected on the remote for the
system components you are
operating.

WARRANTY

The warranty should be registered on-line within 8 days of purchase. No
Dealer or Distributor may vary the terms of this warranty, which is personal to
the original Purchaser and is not transferable.

Please retain the sales receipt as proof of purchase.

Warranty claims must wherever possible be made through the retailer from
whom the equipment was purchased.

This warranty excludes:

• Damage caused through neglect, accident, misuse, wear and tear, or
through incorrect installation, adjustment or repair by unauthorised
personnel. Any unauthorised servicing will result in loss of warranty.

• Liability for damage or loss occurring in transit to or from the purchaser.

• Consequential damage, loss or injury, arising from or in conjunction with

this equipment.

Equipment for attention under warranty should be consigned return carriage
paid. If returned equipment is found to comply with the published
specification, CYRUS reserves the right to raise a charge.

The above conditions do not affect your statutory rights as a consumer.

WEEE

This logo means that this product is not to be
disposed of with your household waste. This product
should be handed over to a designated collection
point to be recycled. Your cooperation in the correct
disposal of this product will contribute to the effective
usage of natural resources. For more information on
collection points, contact your disposal service or
City Hall.

12

Cyrus DAC X+, Cyrus DAC XP+ User Instructions

Specifications (DAC X+)

Power Supply

Voltage: .......................................................................... As plate on rear of unit

Power consumption (Standby) .................................................................... 12W

Power consumption (Operational) ............................................................... 14W

EMC & Safety Compliance ............................................................................. CE

Enclosure

Dimensions (WxHxD) ............................................................ 215 x 75 x 365mm

Weight ....................................................................................................... 3.8Kg

Material ...................................................................................... Die cast chassis

Audio Performance

Inputs

Input voltage .................................................................................. 500mV pk-pk

Input Impedance ......................................................................................... 75Ω

S/N ratio, (PCM in, 0dBFS) .................................................................... 115dBA

THD+N, (PCM in, 0dBFS) .......................................................................0.002%

Outputs

Output voltage (dig. in, vol max) ...... Fixed out ........................................... 2.3V

Balanced out .................................... 4.6V

Output Impedance ............................ Fixed out ........................................... 47Ω

.......................................................... Balanced out .................................... 47Ω

Specifications (DAC XP+)

Power Supply

Voltage: .......................................................................... As plate on rear of unit

Power consumption (Standby) .................................................................... 20W

Power consumption (Operational) ............................................................... 22W

EMC & Safety Compliance ............................................................................. CE

Enclosure

Dimensions (WxHxD) ............................................................ 215 x 75 x 365mm

Weight ....................................................................................................... 6.5Kg

Material ..................................................................................... Die cast chassis

Audio Performance

Analogue Inputs

Input Sensitivity ....................................................................................... 200mV

Input Impedance ....................................................................................... 47kΩ

Input Overload level (1KHz, 0.01%THD) .................................................... 4.3V

S/N ratio, (500mV i/p, max.vol.) ............................................................. 100dBA

THD+N, (500mV i/p, max.vol.) ............................................................... 0.002%

Channel separation (1kHz) ......................................................................... 85dB

Digital Inputs

Input voltage .................................................................................. 500mV pk-pk

Input Impedance ......................................................................................... 75Ω

S/N ratio, (PCM in, 0dBFS) .................................................................... 115dBA

THD+N, (PCM in, 0dBFS) ...................................................................... 0.002%

Analogue Outputs

Output voltage (dig. in, vol max) ....... Fixed out ........................................... 2.3V

Pre out .............................................. 4.4V

Balanced out ..................................... 8.4V

Output Impedance ..................................................................................... 300Ω

13

ENGINEERED

TO ENTERTAIN

Cyrus Audio Ltd., Ermine Business Park, Huntingdon, PE29 6XY, U.K.