Auralic TAURUS Manuale utente
TAURUSHeadphoneAmplifier/PreAmplifier
USER’S GUIDE
Revision 1.0
AURALIC LIMITED
RM 19C, LOCKHART CENTRE, 301-307 LOCKHART ROAD, HK
Phone: +852 6852 3312. Fax: +852 8199 9198
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Copyright © 2008-2012 AURALIC LIMITED (AURALiC) and licensors.
All rights reserved. No part of this publication including but not limited to, graphics, text,
code or interactive features, may be reproduced without the express written permission
from AURALiC or its licensors. The content of this manual is provided for information use
only, is subject to change without notice, and should not be construed as a commitment by
AURALiC. AURALiC assumes no responsibility or liability for any errors or inaccuracies
that may appear in this manual. AURALiC, inspire the music, ActiveUSB, AFN402, Alire,
Purer-Power and their graphic logos are trademarks or registered trademarks of AURALiC
in the Hong Kong and/or other countries. AURALiC's trademarks may not be used in
connection with any product or service that is not AURALiC's, in any manner that is likely
to cause confusion among customers or in any manner that disparages or discredits
AURALiC. All other trademarks not owned by AURALiC that appear on this site are the
property of their respective owners, who may or may not be affiliated with, connected to,
or sponsored by AURALiC.
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Welcome
Begins from the pursuit of an extraordinary amplifier that can well match with modern top
quality headphones, inspired by the soul of Rupert Neve's legendary design philosophy,
bearing with modern simplism style appearance, TAURUS is born with a perfect coales-
cence of classic and pop elements. Joint using with ARK MX+ and a great headphone, it
lets you sailing through the ocean of music, experiencing the wonders of artistic enjoy-
ment.
zAURALiC ORFEO Class-A Output Module
Inspired by Neve 8078 analog console’s circuit design, AURALiC developed ORFEO
Class-A output module. The principle of this module is to use a mass of small signal
components with best linear characteristic. By packing them though a thermal bal-
ance procedure and bias the transistors into Class-A, ORFEO achieves impressive
performance with open loop distortion less than 0.001%. With such sophisticated
module, TAURUS shares the same warm and natural sound with Neve 8078.
zLow Noise Input Buffer
The input buffer of TAURUS is specifically designed by AURALiC to meet the re-
quirement of headphone amplifier usage. This buffer own an exclamatory low noise
of less than 2uV while maintains high input impedance (100K of RCA and 200K of
XLR). The low noise input buffer endues TAURUS with a dynamic range over 130dB
and possible to fit into any kind of source, even with high output impedance devices
such as valve buffered CD, it can still easily capture every details and ensure the re-
ality of music impression.
zReal-time Switchable Working Mode
With a unique 4-way individual output structure, you can configure TAURUS into
standard or balanced working mode by simply pressing the button on the front panel
without power off the unit or unplug the headphone. In the standard mode, TAURUS
can output 4500mW continuous and undistorted power into 32ohm, satisfy the
toughest headphone’s driving requirement; when facing high impedance loads,
TAURUS can also deliver 1000mW continuous and undistorted power into 600ohm in
balanced mode. Such flexible design allows TAURUS to match most modern top
quality headphones in a perfect way.
Smoothed music expression, sophisticated circuit design and brilliant appearance;
TAURUS is another exemplary works designed by AURALiC.
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Table of Contents
Warranty .........................................................................................................6
Unpacking ......................................................................................................6
Placement and Cabling .................................................................................7
Placement..................................................................................................7
Check Your AC Mains Voltage...................................................................7
Cabling ......................................................................................................8
Operation........................................................................................................9
Power On/Off.............................................................................................9
Volume Control........................................................................................10
Input/Output Control ................................................................................10
Headphone Connection...........................................................................11
Burn-in period and Warm-up....................................................................11
Maintenance & Service................................................................................12
Maintenance............................................................................................12
Service.....................................................................................................12
Contact....................................................................................................12
Troubleshooting...........................................................................................13
No Power.................................................................................................13
No Sound or Low Output.........................................................................13
Distorted or Partial Sound........................................................................13
Noise/Hum...............................................................................................13
Specifications...............................................................................................14
EC Declaration of Conformity.....................................................................15
AURALiC Product Registration Form ........................................................17
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IMPORTANT SAFETY INSTRUCTIONS
zAll safety and operating instructions should be read before the product is operated,
and retained for future reference.
zThis product should be operated only from the type of power source indicated on the
back of the unit. If you are not sure of the type of your mains power supply, consult
your dealer or local power company.
zTo completely disconnect this product from the AC mains, disconnect the power
supply cord plug from the AC receptacle.
zDo not use the product near water, i.e. near a bathtub, kitchen sink, laundry tub, in a
wet basement, near a swimming pool etc.
zDo not install the product near heat sources such as radiators, heat registers, stoves,
or other apparatus that produce heat. See “Placement and Cabling” on page 7.
zDo not let objects or liquids fall into the product. Do not expose the product to dripping
or splashing. Do not place a vessel containing liquid on top of the product.
zClean only with a soft, dry cloth.
zDo not attempt to service this product yourself. Opening or removing covers may
expose you to dangerous voltage. Refer all servicing to authorized service personnel.
See “Service” on page 12.
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Warranty
AURALiC offers a 90-day factory warranty from the date of purchase that can be extended
to a 3-Year limited warranty. This non-transferable warranty is available to the original
owner by completing the product registration form including the original sales information
from your authorized AURALiC dealer within 30 days of purchase. You could either use
the online registration form on our website (www.auralic.com) or fill ‘AURALiC Product
Registration Form’ on page 17 and send it back to your dealer to finish the registration.
Warranty coverage includes all parts and labors. Warranty is void if damage is due to
abuse, neglect or unauthorized modification. Cost associated with the return of this
product is the sole responsibility of the owner. All repair work must be done by AURALiC
or by an authorized AURALiC repair agency. Work done by unauthorized persons will void
any and all warranty coverage.
AURALiC products are uniquely identified with a serial number (S/N) on the back of the
unit. This number is required to validate your warranty. Please reference your serial
number if service is required.
Before the product can be returned for service, an RMA (Return Material Authorization)
number must be issued by AURALiC. Contact your dealer or AURALiC for further infor-
mation. Units without an RMA number will not be accepted for service.
Unpacking
Please confirm that the following items are in the box:
zTAURUS
zAC Power Cord
zUser’s Guide
Carefully unpack each piece, if there is any damage, or if anything is missing, please
contact your dealer or AURALiC.
ONLY SHIP THIS PRODUCT IN ITS ORIGINAL PACKING!
Please be sure to retain the original shipping carton and all packing materials as they are
specially designed to protect the unit during transportation or shipping.
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Placement and Cabling
Placement
TAURUS should be placed on a solid and stable surface with good ventilation. Do not
install this product near any heat sources such as radiators or other product (such as
amplifiers) that produce heat. Site the product so that its location or position does not in-
terfere with its proper ventilation. For example, it should not be situated on a bed, sofa,
rug, or similar surface that may block the ventilation openings, or placed in a built in in-
stallation such as a bookcase or cabinet that may impede the flow of air through the ven-
tilation openings.
Ventilation Requirement
TAURUS dissipates up to 50 Watts of power during normal operation. It
should be installed in a space with at least five inches of clearance above;
one inch behind and on both sides of its enclosure to provide adequate
ventilation. Avoid placing it directly above other equipment that produces
heat.
Check Your AC Mains Voltage
TAURUS is shipped with its mains voltage preset for operation in the destination country.
The mains voltage setting is written on the back of the unit, left besides power cord socket.
Mains voltage setting is not intended to be changed by the user. If it needs to be changed,
contact your dealer or AURALiC.
The power cord has a three-wire grounding type plug (a plug having a third pin for groun-
ding). It will only fit into a grounding type power outlet. If you are unable to insert the plug
fully into the outlet, contact your dealer or AURALiC. Do not defeat the safety purpose of
the grounded type plug.
TAURUS MUST BE USED WITH CORRECT
MAINS VOLTAGE AND PROPERLY EARTHED!
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Cabling
The I/O ports on the back of the unit are shown as following:
1 Right Balanced Analog Input 5 Right Balanced Analog Output
2 Right Single-Ended Analog Input 6 Right Single-Ended Analog Output
3 Left Single-Ended Analog Input 7 Left Single-Ended Analog Output
4 Left Balanced Analog Input 8 Left Balanced Analog Output
9 AC Mains Power Cord Socket
Please be sure to power off all units in your system before any cabling job, failed to follow
this instruction may result in permanent damage to the device and void any warranty.
ALWAYS POWER OFF TAURUS BEFORE CABLING!
zAnalog Inputs
The balanced and single-ended analog inputs are individually buffered, however, it is still
strongly recommended to disconnect unused ports to avoid any potential electromagnetic
interference induced by cable.
The sensitivity of both RCA and XLR inputs are same as 2Vrms with a maximum allowed
level at 6Vrms. Please be sure to use a source component with its output level within this
range.
Since the input impedance of the RCA and XLR ports are designed to be very high
(100K@RCA / 200K@ XLR) to capture music details from the source, we recommended
you to use shielded interconnect cable to avoid noise pick-up from the environment.
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zAnalog Outputs
When using as pre-amplifier, TAURUS will provide high level, low distortion audio signal to
your power amplifier though its analog outputs. In STD mode, both RCA and XLR outputs
are connected together with XLR’s pin 2 as hot; in BAL mode, only XLR outputs are active
with a maximum output level at 36Vrms. AURALiC recommended you only connecting
RCA or XLR outputs at the same time for best sonic performance.
Operation
The front panel of TAURUS is shown as following:
1 Power Switch 2 Volume Control Knob
3 Power LED 4 Input Control Switch
5 Output Control Switch 6 4PIN Balanced Headphone Jack
7 6.35mm Stereo Headphone Jack
Power On/Off
As soon as you have plugged the power cord, TAURUS will be in deep standby mode with
power dissipation at about 0.1 Watt, you can power on and off the unit by pressing the
tactile switch ‘POWER’ on the from panel.
The Power LED indicates current work status of TAURUS:
zLED off: Power off
zLED light: Ready to work
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Volume Control
The volume control allows you to increase or decrease the output level of analog outputs
and headphone jack from -80dB to +16dB.
LISTENING WITH HEADPHONE AT LARGE SOUND PRESURE
LEVEL WILL PERMANENTLY DAMAGE YOUR HEARING!
TAURUS is very powerful in driving ability; this also means it can produce sound at level
which may permanently damage your hearing. Always take care of your hearing when
enjoy the music and try to reduce the volume all the time as far as possible.
Please always reduce the volume before plug/unplug as well as put on the headphones.
This not only protects your headphones from loud click and pop noise during the
plug/unplug but also avoid reproduce a much higher sound level when a new headphone
with lower impedance is plugged.
Input/Output Control
The input control switch allows you to choose the music source between RCA and XLR
inputs. Though both inputs are individually buffered, we recommended you only connect-
ing one pair of inputs to avoid any potential electromagnetic interference induced by ca-
ble.
The output control switch set the working mode of TAURUS on the fly. In the standard
mode, TAURUS can output 4500mW continuous and undistorted power into 32ohm and
1000mW continuous and undistorted power into 600ohm in balanced mode.
All outputs and jack are active under STD mode; RCA outputs at the back panel and
6.35mm stereo headphone jack will be muted under BAL mode for proper operation. For
best sonic performance, please connect only one kind of outputs/jack at a same time.
Using TAURUS as Pre Amplifier
Since analog outputs on the back panel and headphone jack on front
panel are in parallel connection, please unplug your headphones when
using TAURUS as pre amplifier. Failed to do those will result in high power
output on the headphone jack and damage your headphone.
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