Extraudio X250 User manual

X250
Integrated Amplifier Pure Class AD
Extraudio products are unique, handmade and exclusive.
extraudio® Copyright © 2017 Extraudio, BV. All Rights Reserved Owner’sManual-X250V24

extraudio® Copyright © 2017 Extraudio, BV. All Rights Reserved Owner’sManual-X250V24
Introduction -------------------------------------------------------------- 1
1.1 Welcome
1.2 Warning
1.3 Explanation
1.4 The contents
Installation ----------------------------------------------------------------2
2.1 Unpackaging
2.2 Placement
2.3 Power ON/OFF sequence
Front panel -------------------------------------------------------------- 3
Rear panel --------------------------------------------------------------- 4
Remote Control ------------------------------------------------------- 5
Some advice and tips/ Recommendations: ------------------- 6
6.1 Cleaning and maintenance
6.2 Product run-in and operating temperature
6.3 Fuse and Phase
6.4 Use electric power conditioner
6.5 Ground connection
Support ------------------------------------------------------------------ 7
7.1 Please take a moment
Technical data --------------------------------------------------------- 8
Warranty ---------------------------------------------------------------- 9
Directives --------------------------------------------------------------- 10
10.1 Energy efficiency
10.2 European Directives
10.3 Copyright
Table of contents:

1.2 Warning:
To avoid risk of fire or electric shock, do not expose this appliance to rain or moisture.
Verify line voltage before use.
Do not remove cover.
No user serviceable parts inside. Refer servicing to qualified service personal.
The warranty is void if the product is tampered with by non-authorised personnel.
Use only an authorized Extraudio service center.
1.4 The contents:
• Power Cable
• Mini-USB remote control charging cable
• Extraudio Remote control
• Owner’s Manual
• Technical report page
If you do not find any of these items, please con-
tact your vendor. We recommend that you keep
the packaging so that you can transport the prod-
uct with total safety if required.
1.3 Explanation:
Your X250 integrated amplifier aspires to be a work
of art that also evokes feelings and sensations. It
seems to disappear from your listening room and
to give way to the musicians who are, after all, the
object of our passion. At Extraudio, we strive for the
faithful reproduction of the real and authentic live
sound of a concert. The X250 does not aspire to be
just a piece of technology. Extraudio wagers on a real-
ly flat sound, not just neutral but completely flat.
Enjoy the music.
1.1 Welcome:
Thank you and congratulations on the purchase of your new Extraudio Pure Class A X250 integrated ampli-
fier.
This Integrated Amplifier is the result of a process of research, development and innovation (R + D + I) car-
ried out over 7 years in the Netherlands by specialized engineers.
Extraudio was conceived with the conviction that things can be changed in the high fidelity sector and
particularly in High End audio.
We have used a very concrete concept as if it were a mantra “less is more” that Mies Van der Rohe popular-
ized and to which Dieter Rams added a new meaning “less is more, but with better execution”.
Our aims in the production process are:
• To create not just a perfect piece of kit but to create a perfect music box that conveys a totally trans-
parent, silent and authentic live sound that is energy efficient without losing the magic or the weight and
measure of the music.
• To create a beautiful, and straightforward, honest and long-lasting product without pre-setting cost limits.
• To put the end user at the forefront of the creative process.
We have achieved all of this with the X250 integrated amplifier and wish you to enjoy your product for
many years.
Please read this entire manual carefully.
extraudio® 1 Copyright © 2017 Extraudio, BV. All Rights Reserved Owner’sManual-X250V24
INTRODUCTION

INTRODUCTION
2.3 Power ON/OFF:
Connect the power cable to the rear socket. Make sure the voltage is correct for the X250 Integrated Am-
plifier, which operates correctly at 220-240VAC, 50 / 60Hz. Once plugged into the wall socket, it is ready
to function. The button with the brand logo will light up in orange. The X250 is now in the standby
position. Then you must press this logo button or the remote control button , and the logo-button will
change colour from orange to white and begin to blink; it will do so for 60 seconds. Start-up has started; a
microprocessor will be reviewing all the functions. Please do not disconnect the appliance from the electri-
cal network during this process. After this pre-heating period of 60 seconds, the logo button will remain lit
in white.
NOTE:
Those of our products that are equipped with thermionic valves have a soft start system in order to pro-
long the life of the valves.
If you wish to switch off the product, press on the logo button or the button on the remote control. The
shutdown process will begin: the logo button will change colour from white to orange and start blinking for
20 seconds. Do not disconnect the product from the power supply until the logo button stops blinking.
Although the X250 does not have many external indicators it performs many functions that we wish to con-
ceal and automate by software (in keeping with our mantra, “less is more”) to improvise of use. The entire
product is controlled by a microcontroller and loaded with our proprietary and exclusive software and thus
ensures any future upgrading only requires changing the software version.
extraudio® 2 Copyright © 2017 Extraudio, BV. All Rights Reserved Owner’sManual-X250V24
2.1 Unpacking
Please remember to keep the original packaging.
Your product has been thoroughly checked and has passed all the quality controls before being packaged
and shipped.
Make sure that the packaging is in perfect condition on receiving your product. If you notice any damage,
let the carrier know and inform your official distributor.
If it is necessary to return the product to the factory, it must be sent in its original packaging.
Your official warranty will be voided if it is not returned in the original packaging.
2.2 Placement
Remember to plan the placement of your amplifier before setting it up. If you intend to place the X250 on
an item of furniture, you must leave a space of at least 5cm or 2 inches on either side of it in order to pro-
vide sufficient space for ventilation.
Excessive heating can shorten the service life of the internal components and even cause equipment fail-
ure.
It is also necessary to leave enough space at the back of the amplifier in order to facilitate connections with
other components and speakers.
INSTALLATION

extraudio® 3 Copyright © 2017 Extraudio, BV. All Rights Reserved Owner’sManual-X250V24
Front panel
Phono RCA inputs are installed on the rear panel, you can connect an external phono preamplifier.
Extraudio has an optional high quality internal MM preamp available. It is of minimalist design with a
single power stage that reduces noise to a minimum and increases the quality of reproduction of your vinyl
records. This preamp is built with discrete components in class A and is an essential complement to enjoy-
ing your LP’s.
NOTE: The extraudio Phono MM preamplifier option is not installed in the standard version; if you want
this option installed please contact your official distributor or us.
Logo button:
Power on / off and LED status indicator:
ORANGE: X250 is off - Standby mode.
WHITE: The X250 is on.
NOTE: When the LED blinks white, it is in
the heating phase of the thermionic valves.
When the LED blinks orange, it is shutting
down.
LED indicator
“AUDIO LEVEL”, when you
press the remote control
“volume + or -, mute or pow-
er on / off” this LED lights
red.
The “SELECTOR”
knob allows the selec-
tion of different input
sources for listening.
Input source selected with the Knob selector.
The first time the X250 is turned on position 1:
“PHONO source input” is selected. Subsequently, the
product memorizes and stores the previous selection
and, whenever you turn it on again, it will start up with
the last source input that was selected.
If one of these LED selection indicators is lit in white, it
means that the product is fully operational and that an
input source is selected.

Front panel
extraudio® 4 Copyright © 2017 Extraudio, BV. All Rights Reserved Owner’sManual-X250V24
Rear panel
Designed in the Netherlands
Assembled by hand in Europe
SN:
This triangle means,
“dangerous voltage
not insulated inside
the equipment and of
sufficient magnitude
to constitute a dan-
ger of electric shock
to people”.
The exclamation
mark within this
triangle signifies
and warns the user
that this product
contains important
maintenance, techni-
cal service and oper-
ational instructions
in the literature that
accompanies it.
Speaker connection. Output terminals L + R. Connect the speakers correctly, the
right one to the terminal marked R and the left one to the terminal marked L. Al-
ways check the polarity of the speaker wires; the + sign indicates the red or positive
connector and the - sign indicates the black or white connector.
You can use banana plugs or bare wire; the recommended gauge of the speaker
wire is from 2mm to 4mm. You can also connect our Active Speaker Cable to get
the most out of your X250 integrated amplifier as well as your speakers.
NOTA: Please do not cross or reverse the polarity of the speakers and do not pow-
er up the amplifier without connecting the speakers as this can cause very serious
damage to the system and void the official product warranty. The recommended
speaker load is 2 Ohm to 8 Ohm.
Power supply socket. Keep in
mind that for a better sound
you must connect the phase
of all your audio products
correctly. (See. Page 6.3 of this
manual)
IN processor input con-
nections or audio bypass
inputs for home cinema.
These two inputs are
designed to enable con-
necting an AV preamplifier
to the X250 Integrated
Amplifier, which then acts
as a power stage and turns
off all other systems and
the inbuilt preamplifier.
This stereo RCA and XLR
input is marked on the front
panel with the acronym
PROC and is activated by
setting position 6 with the
front panel selector knob.
NOTE: Take great care
when using the X250 as a
power amp as it operates at
full power and could cause
damage to your speakers.
Balanced XLR
input of high
quality and
very low noise
with galvanic
insulation.
Stereo RCA inputs.
The Phono input is
the only special one in
the X250. We have an
optional Extraudio Phono
Preamp MM PH1. Please
consult your Extraudio
dealer or ourselves about
this option and its instal-
lation or, if you prefer, we
can configure this input
as a bypass so that it can
be used with an external
Phono preamp.

extraudio® 5 Copyright © 2017 Extraudio, BV. All Rights Reserved Owner’sManual-X250V24
Extraudio remote control
Our remote control has been conceived from a different approach – seeking the convenience of the user.
Extraudio wished to offer battery life and operating distance as its main features and these objectives have
been achieved:
The remote control does not have removable batteries but has a rechargeable internal battery that only
needs recharging after 100 days in conditions of normal use.
It includes an integrated USB battery charger with a charge indicator that can be used with any USB port
such as a PC. When you connect the USB cable to the remote control, the battery charge LED lights up and
when the battery is fully charged the LED will turn off indicating that the battery is 100% charged.
The transmission range is from 20 to 80 meters.
The design is minimalist according to Mies Van Der Rohe’s philosophy of “less is more”. There are only four
buttons: On, Off, Volume up and down and Mute. The concept behind this remote control is unusual but in
the end it is a more efficient and ergonomic creation.
Mini USB battery charge connector.
LED battery charge indicator.
Power ON/OFF
Volume +
Volume -
Mute
Led indicator and antenna protection.

extraudio® 6 Copyright © 2017 Extraudio, BV. All Rights Reserved Owner’sManual-X250V24
Some advice and tips/ Recommendations
6.1 Cleaning and maintenance
Unplug the X250 Extra Pure Class AD Integrated Amplifier unit from the wall socket outlet before cleaning
it. The chassis can be cleaned with a soft, damp cloth. It is essential that the cloth does not loose lint. The
X250 Integrated Amplifier has a layer of anti-fingerprint varnish on the outside and must not be cleaned
with solvents or any chemical product. A special liquid for painted surfaces or a non-abrasive polish can be
used if you wish
6.2 Product run-in and operating temperature/ Running in and warming up
Extraudio is fully aware of the empirical concept of running in audio products equipped with thermionic
valves and we can affirm that our valve products have a running in period of between 100 to 400 hours of
operation. Once run in, the sound is rounder and gains in soundstage and spatiality. The running in process
should be carried out with music regardless of the output volume.
Another process is warming up; for a valve audio product to sound properly, it must be turned on for about
45 minutes. This is the time it takes for the product to reach its optimum temperature and point of electri-
cal functioning. It will sound better from 45 minutes onwards.
6.3 Fuse and *phase
Do not tamper with the top plate of the appliance or the warranty could be voided. If the equipment has
any problems please contact your official distributor or us.
The fuses are inside the device and should only be replaced by qualified personnel.
For 200-240 volts AC, proper rating is 8 Amp.
Fuses must be of T (temporized) type.
Do NOT use fuses with wound coil filaments.
In case of doubt, always install Fast Blow types.
*The phase of a power supply can influence the sound of your audio products, please check that all the
devices are connected in the same way and that the phase is correctly connected. Check that the positive
phase or pole of the electrical current input is connected to the terminal on the left of its power connector.
6.4 Use electric power line
conditioner
We have found that the use of some power condi-
tioners can perform the function of “cleaning” the
power supply and eliminating electrical interference
and so improving the sound.
6.5 Grounding
The X250 Integrated Amplifier is designed to be
connected to a ground connection. For optimum
performance, it is very important that the ground-
ing is correct and is enabled in your listening room.

extraudio® 7 Copyright © 2017 Extraudio, BV. All Rights Reserved Owner’sManual-X250V24
Please take a moment:
Save the invoice of your purchase. Enter the following information here for insurance or for a future techni-
cal service request: serial number, date of purchase and name of the Extraudio dealer.
Serial Number: ________________________________________________
Date: _______________________________________________________________
Dealer Name: __________________________________________________
Support
If you need support or have any technical questions about Extraudio products, contact your dealer or con-
tact us by email at the following address so that we can provide fast and quality support:
[e-mail]
You can also contact us at the following postal address or by email:
Extraudio BV
Gravin Juliana van Stolberglaan 31, office A8875
2263 AB - Leidschendam
The Netherlands
[e-mail]
We also invite you to visit our website:
www.extraudio.com
Remember: Do not tamper with the top plate of the appliance or the warranty could be cancelled: If the
equipment presents any problems, please contact us or your official dealer.
Thank you for reading this manual. We wish you to enjoy many hours of listening with your Extraudio and
your favourite music. Enjoy the music!
The Extraudio “Beyond the Limits” Team.

extraudio® 8 Copyright © 2017 Extraudio, BV. All Rights Reserved Owner’sManual-X250V24
Technical data
Frequency response:
0,5Hz to > 350Khz +0 -1db
Low Frequency: -0,20db 0.5Hz
High Frequency: -0,24db 350kHz
Noise level dynamic range / dBA:
Orange version: > 112db
Chromed version: > 121db
Total armonic distortion / THD:
THD+N: 0,008% @ 1W (8 Ohm, 1Khz)
Gain:
Main output: 12dB Balanced output, 6dB RCA output.
Processor AV input: 0dB RCA and XLR output.
Analog inputs / Input impedance:
4 pairs of unbalanced RCA + 1 Pair Balanced XLR +
Processor AV (RCA and XLR connectors)
120K ohms Balanced, 60K ohms RCA Inputs (6):
**PHONO, CD, TUNER, AUX (RCA).
BALANCED (XLR). IN PROCESSOR AV
(XLR and RCA connectors).
Maximum input:
20V RMS BAL, 10V RMS RCA.
Crosstalk:
Separation of stereo channels: > -80dB.
Controls:
Volume (ALPS Motorized, controlled by microcontroller), Select
Input, optical rotary encoder (ALPS 18 steps).
Power requirements:
200-240VAC 50/60Hz, 79 watts – 0,5w standby power con-
sumption Energy Star & EU specs
Dimensions:
44,5 cm W by 12,5 cm H by 39,5 cm
D 56,5 cm W by 24 cm H by 52,5 cm D (shipping)
Weight:
39 lbs. (18 kg) Net; 52 lbs. (24 kg) Shipping.
Recommendation tube:
Orange version: Electro Harmonix 6922 Gold pin.
(balanced triode and matched pair).
Chromed versión: Special version dual triodes Balanced NOS
(balanced triode and matched pair).
Power Output:
2 X 250W @ 1% THD+N, 20Hz – 20Khz, 4 Ohm
2X 200W 8 Ohm “both channels driven”
These pre-specifications are subject be changed without notice.
EXTRAUDIO BV, The Netherlands
** The Phono preamp for cartridge MM is optional and is not installed in standard product.

extraudio® 9 Copyright © 2017 Extraudio, BV. All Rights Reserved Owner’sManual-X250V24
Warranty
Term and conditions:
Extraudio warranty its products for a period of 2 years and covers defects in material and manufacture, labor included, the war-
ranty for the thermionic electronic valves (tubes) is 180 days.
The warranty period begins on the date of purchase from an authorized dealer and is subject to the following terms and conditions:
1. The buyer must register the product within 30 days of the original purchase in order to register and activate the warranty. The
registration can be done at the following Extraudio web page: http://www.extraudio.com/product-registration/
2. The client must be in possession of the original invoice so that it can be authenticated in the case of any claim under warranty.
3. The Extraudio product must not be modified in any way or the warranty will be null and void. Please consult about valve changes.
4. The Extraudio warranty is only valid in the country of the original purchase.
5. The product must not be kept in a wet or humid environment nor exposed to the outdoors, water or salt water.
6. Extraudio will not be held responsible under any circumstance for any product that has been damaged because of intentional
misuse, accident, negligence, loss or any other damage caused to or by other devices despite the fact they interact with an Ex-
traudio product.
7. Extraudio will repair the product within a maximum of 180 days while under warranty.
8. All repairs carried out after the expiry of the warranty will be charged to the owner of the product or the dealer. The repair will
be guaranteed for a period of ninety days on parts and labour. The client is responsible for delivering the product to the Extraudio
dealer or directly to the workshop in its original packaging and with all the accessories.
The client or dealer will assume all the transport costs, including taxes, involved in sending the product under warranty. Under no
circumstance, Extraudio will be considered responsible for any damage caused by accident or neglect on the part of the carrier.
Extraudio will return the product repaired under warranty with all transport costs, including insurance, paid. However, Extraudio
will not be responsible for any tax on the repair incurred in the country of the client.
9. Extraudio must be notified of the purchase of any of its products at the following web page http://www.extraudio.com/prod-
uct-registration/ within thirty days of the purchase. Unregistered products or products not purchased from an authorized dealer
will not be covered by the warranty.
10. The warranty is untransferable. It solely protects the original purchaser of the product.
11. In the event of any disagreement with the warranty, the decision of Extraudio is definitive and not subject to review.

extraudio® 10 Copyright © 2017 Extraudio, BV. All Rights Reserved Owner’sManual-X250V24
10.3 Copyright
Copyright © 2017 - Extraudio ®.
Extraudio is a registered trademark.
All rights reserved
EXTRAUDIO BV
Amsterdam - Leidschendam
The Netherlands
www.extraudio.com
[e-mail]
Sample of this document: X250V24
All the information contained in this manual to date is considered to be correct. Nevertheless, our policy is one of continuous
development and the information is subject to change without prior notice and does not represent a commitment on the part of
Extraudio BV.
10.1 Energy efficiency
0,5w Standby Power Energy Star & EU specs.
Extraudio X250 Pure Class AD is equipped with a high power amplification module with very low power consumption, with an
energy efficiency of 94.4%.
10.2 European Directives
The Directive 2014/35/EU, CE, RoHs
All Extraudio products will follow and will be homologated to the European directives and quality standards:
Directive 2002/95/CE for Restriction of Hazardous Substances in electrical and electronic equipment, RoHS.
Every product will include an EC declaration and the EC conformity mark, directive 93/68/EEC, besides of being designed and
manufactured inside the European Union.
This product has been designed and created following the safety standard of electrical and electronic audio and video equip-
ment, IEC 60065.

extraudio® Copyright © 2017 Extraudio, BV. All Rights Reserved Owner’sManual-X250V24
NOTES:

extraudio® Copyright © 2017 Extraudio, BV. All Rights Reserved Owner’sManual-X250V24
NOTES:

Extraudio BV
Gravin Juliana van Stolberglaan 31, office A8875
2263 AB - Leidschendam
The Netherlands
[e-mail]
www.extraudio.com