Audial A User manual

Stereo Amplifier
User Manual
Rev.0, January 2014
Audial d.o.o Belgrade, Serbia
www.audialonline.com, [email protected]

The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of
uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk
of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating
and maintenance (servicing) instructions in the literature accompanying the product.
To prevent the risk of electric shock, do not remove the cover!
This device contains no user serviceable parts inside.
Refer servicing to qualified servicing personnel only.
IMPORTANT PRECAUTIONS
1. Do not expose this device to rain or moisture, excessive heat or mechanical force.
2. Use this device exclusively with specified mains voltages.
3. Unplug the device from the wall outlet during a lighting storm.
!
RISK OF ELECTRIC SHOCK!
DO NOT OPEN!
CAUTION
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Thanks for choosing Audial Model A amplifier. We hope you will find its sound quality a
reference for years to come.
This manual comprises introducing information on use and performance of Model A. For
further information please refer to the Audial web site, www.audialonline.com/model-a/ ,
www.audialonline.com/online-topics-model-a/ , or send your questions to
[email protected].
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Getting started
Model A is relatively simple to use and,
provided it is used within its limits, it
requires no special care in everyday
operation.
It is normally operational, and achieves
claimed specifications right from the start,
though it still needs 10 - 15 days of burning
in to perform its best in subjective sonic
terms. Afterwards, it is generally enough to
leave it powered on for half an hour before
critical listening.
It is not harmful if Model A is left constantly
p o w e r e d o n , h o w e v e r g e n e r a l
recommendation to turn such devices off
whenever out of home applies regardless.
Also, it is important not to block opening
holes at the back plate, as they provide air
circulation into and from unit interior, thus
providing proper cooling.
Other than amplifier itself, a packing box
comprises mains cable. This cable is
industry standard one, and its purpose is to
make a unit instantly operable. However to
utilize the most of Model A sonic potential,
use of a higher quality mains cable is highly
recommended.
Connections
No special knowledge is required to
connect Model A into the system.
Mains connector is standard IEC C14 (cable
is supplied, as stated above), and is located
at the back panel.
Input connectors are RCA. Audial offers
several options regarding Model A input. It
can be one or two inputs amplifier, with or
without volume control, and volume
control can be low impedance or standard
one. When using low impedance volume
control, Model A input impedance gets as
low as 750 Ohm, and you should make sure
that your source is able to perform well
with such a load.
Output loudspeaker connectors are binding
posts, and they accept majority of cables,
spades or banana plugs.
Model A does not invert polarity (absolute
phase). Hence with source that also does
not invert polarity the speakers should be
wired in phase, so black to black (ground),
and red to red (live / hot).
Support
Basic use of Audial Model A is simple. It has
two switches (power on/off and input
selector) located at back, and power LED
indicator and volume control knob located
at front plate.
However, due to variety of systems it can be
used in, it is impossible to provide all the
required information on system integration
by user manual. Customers are hence
advised to contact Audial directly in this
regard, whenever it is necessary, by email
[e-mail], or by Audial
w e b s i t e c o n t a c t f o r m ,
www.audialonline.com/contact/ .
Warranty
Audial claims proper working of this
product for two years. Audial is obliged to
correct any malfunction within this period,
at no charge, either by competent repair
service, or by swapping the sold unit with
the new one.
For the units sold directly by Audial, invoice
is also guarantee certificate. Audial
however maintains own data base of
directly sold units, so original buyers
normally will not actually need it. Warranty
is also fully transferrable from original to
subsequent owner(s), however in this case
we will probably ask for the invoice.
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1 - Power indicator
2 - Volume control knob
1 - Input selector
2 - Input connectors (RCA)
3 - Output connectors
4 - Ventilation holes
5 - Mains connector (IEC C14) with fuse
6 - Mains switch
Front Panel
Rear Panel
1
5
6
2
1
234
!
AUDIAL Model A
# A00-0000
Made in Serbia
220-240VAC
50-60Hz
FUSE T3.15A
POWER
RIGHT
SPEAKER
1
SELECT
2
L
R
LEFT
SPEAKER
INPUT 2 INPUT 1
HOT
GND
0
I
A
STEREO AMPLIFIER
VOLUME
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Specifications
INPUT:
RCA, one or two pairs, with or without volume control
INPUT SENSITIVITY:
1 V RMS is required for full power, typical
INPUT IMPEDANCE:
Several options are offered, with input impedances between 750 Ohm and 47 kOhm
POWER:
25 W / 8 Ohm, 40 W / 4 Ohm
50 W / 8 Ohm version is also available
GAIN:
29 dB, typical
FREQUENCY RESPONSE:
20 Hz - 100 kHz, +/- 0.5 dB, typical
The input is directly coupled, but amplifier is blocked for DC gain, for loudspeakers safety
ABSOLUTE PHASE:
Correct
HARMONIC DISTORTION (@ full power):
0.01% @ 1 kHz
0.04% across the audio band, worst case
INTERMODULATION DISTORTION (@ full power):
0.01%
MAINS VOLTAGE:
220-240VAC/50-60Hz
110-120VAC/50-60Hz is also available
DIMENSIONS (W x D x H):
352 x 255 x 75 mm
WEIGHT:
Approx. 6 kg
Specifications are subject to change without notice.
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© 2014 Audial d.o.o. Belgrade •Printed in Serbia 2014
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