A1001 CLASS A SUPER
INTEGRATED AMPLIFIER
INSTRUCTIONS FOR USE
Thank you for purchasing the Musical Fidelity
A1001 Class A Super Integrated Amplifier. Used
properly and carefully, it should give you many
years of outstanding musical reproduction.
The A1001 has been designed for the very high-
est possible sound quality allied to a natural tonal-
ity that brings life and soul to all forms of music.
We have invested much time and effort in the design
of this unit, we sincerely hope you will be delighted
with your purchase.
Dust regularly with a soft duster or soft brush
but be careful when using cleaning or polishing
agents - they may harm the surface finish.
If you have any questions about anything in
your audio system, please consult your dealer who
is there to help and advise you.
A1001
Instructions For Use. Page 1
CONNECTIONS AND FACILITIES
3
1
2
4
5
6
BACK PANEL
FRONT PANEL
7
8
9
Right speaker outputs
CD input
Tuner input
Aux 1 input
Aux 2 input
1
2
Power (on / off) button
Tape / source select (tape
monitor) button
10
11
12
13
14
15
16
17
18
19
3
4
5
6
Volume control
Volume position & mute LED
Source selector buttons
Remote receiver lens
Aux 3 input
Tape input
Tape record output
Preamp output
Left speaker outputs
Right preamp & power amp link
Left preamp & power amp link
IEC type mains inlet
7
8
9 10 11 12 13 14 15
16
17
18
19
A1001
Instructions For Use. Page 3
INSTALLATION
INSTALLATION PRECAUTIONS
Your new A1001 is designed and built to provide trouble-free performance but
as with all electronic devices it is necessary to observe a few precautions. Please
ensure that you have complied with these before you connect any AC power to your
amplifier. Retain this guide for future reference.
þ
Heed all warnings on the back of
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Do not use near water.
the unit.
Do not place the amplifier near
þ
Place your A1001 where there is
direct heat sources such as radiators
or other equipment that produces
heat.
adequate ventilation.
þ
Only connect the unit to a power
supply of the type marked on the back
of the unit.
ý
Do not remove any covers or try
to gain access to the inside. The war-
ranty will be invalid if the unit has
been tampered with. There are no
user adjustments within. Refer all
service work to an authorised Musical
Fidelity agent.
þ
Position the power supply lead
and signal interconnect leads where
they are not likely to be walked on or
trapped by items placed on them.
ý
There are fuses in the A1001. In
the unlikely event that one blows, take
your A1001 to your audio dealer. Do
NOT try to replace the fuse yourself
or you will invalidate the warranty.
BEFORE YOU SWITCH ON
You should make all connections to the A1001 before switching on.
Follow this routine before you listen for the first time, and each time you
change any connections.
1
2
3
4
Check all the inputs and outputs to the A1001.
Then check again.
Turn the volume control to nil.
Now you can switch on the power and carefully advance the volume to
the level you want and enjoy the music.
A1001
Instructions For Use. Page 4
USER INFORMATION
THE A1001
The A1001 CLASS A SUPER
doubling the power of your amplifier.
SWITCH ON
When you switch on the A1001 the
unit will initially be in a muted state for a
few seconds to allow the circuits to stabi-
lise and to prevent any switch-on thumps
etc. The volume control position indicator
LED will then light when the unit becomes
active. Note - if you mute the A1001 with
the remote control before you switch it off
you will then need to un-mute the unit with
the remote after switching on.
INTEGRATED AMPLIFIER was
conceived as a very powerful integrated
amplifier of the highest quality, inter-
nally structured as fully separate
preamp and monobloc power amp
stages. The separation of the pre and
power-amp stages allow them to be
fully optimised for their specific func-
tions. In addition this ensures total
freedom from intermodulation and other
distortions and noise that can occur
when these circuits are combined. The
preamp and each power amp stage are
built on separate PCBs with separate
power supplies and a separate magneti-
cally sheilded mains transformer each.
By packaging the unit as an inte-
grated amplifier we were then able to
provide perfect interconnection between
these stages, particularly as regards the
crucial earth return currents, and re-
move any need for potentially sound
degrading interconnects whilst also
giving a more compact amplifier solu-
tion.
CONNECTIONS
All connections should be made
with the power OFF.
The A1001 has 6 line level inputs -
CD, Tuner, Aux 1,2 and 3 and Tape. All
inputs are electrically identical and are
suitable for use with any source compo-
nent with an output voltage in the hundreds
of millivolts (mV). This includes CD play-
ers, tuners, tape machines and the audio
outputs of video recorders, televisions,
DVD and LaserDisc players etc. Enthusi-
asts who wish to use a turntable should
purchase an external phono stage such as
the Musical Fidelity X-LP. We recom-
mend that you use good quality screened
interconnects such as the Musical Fidelity
X-LINX for all connections. Do not use
un-screened interconnect cables as they
have inferior performance and in some cir-
cumstances can actually damage the unit.
All signal circuitry in the A1001 is
fully discrete, no I.C.s are used, all
circuitry has been designed 'from the
ground up' specifically for the A1001.
LOUDSPEAKERS
To get the best from your A1001
for a realistic soundstage and full dy-
namic range, use it with loudspeakers of
a reasonable efficiency. An average
rating for a loudspeaker these days is
about 88dB. This should mean that for
an input of 1 watt, measured at 1 metre
distance, the sound output will be 88dB.
This is actually a reasonably loud
sound, and much daily listening will not
use much more power than this. Note
that changing to a pair of speakers with
a rating of 91dB is equivalent to
TAPE RECORDING
The A1001 has a single tape circuit
with facilities for off-tape monitoring with
3-head cassette decks. Connection of your
tape machine to the A1001 should be as
follows. The tape machine's Tape/Line out-
puts go to the A1001's 'Tape' input sock-
ets.
(continued overleaf)
A1001
Instructions For Use. Page 5
USER INFORMATION
The tape machine's Tape/Line inputs
go to the A1001's 'Tape Record' output.
To record, simply select the required
PREAMP OUTPUT
The A1001 has an additional active
source with the source selector buttons on preamp output situated on the back panel.
the front panel. The selected source will This provides extra flexibility for use in
now be sent to the 'Tape Record' outputs
for recording by the attached tape machine.
multi-room or surround-sound systems etc.
You will also be able to hear the se- REMOTE CONTROL & MUTE
lected source through the loudspeakers.
Note - you can adjust the listening level
with the volume control without affecting
the recording level.
The A1001 is supplied with a
remote control handset that can be used
to select any input and increase or de-
crease the volume by means of the
TAPE RECORDING - OFF TAPE
MONITORING
motorised volume control. Additionally
the remote handset has a 'Mute' button
which when activated cuts off all outputs
In conjunction with a 3-head cassette from the unit. In the 'mute' active state
deck, off-tape monitoring allows the user the red LED position indicator in the
to compare the recorded to original sound volume knob will turn off.
whilst a recording is made. First select the
required source in the normal way and start
recording, now the Tape/Source select but-
ton on the left-hand side of the front panel
WARNING - heat
Because the A1001 is strongly
can be used to switch between Source (the biased into Class A operation it gives off
source signal) and Tape (the recorded sig- heat through the slots in the lid.
nal) allowing direct comparison. Note that
the LED indicator lights when 'Tape' (the
Never put anything on top of
recorded signal) is selected. On some 3- your A1001.
head cassette decks there is an additional
'tape/source' switch on the cassette ma-
chine itself which will need to be in the
'tape' position for the above to work - if
you are in any doubt consult your tape
machine's manual.
Always ensure that the unit has
adequate ventilation.
PREAMP / POWER AMP LINKS
The A1001's preamp and power amp
stages are linked by means of gold plated
bars fitted between the 'Preamp Output' and
'Power amp Input' sockets on the rear
panel. By removing these links the preamp
and power amp stages may be used sepa-
rately. Alternatively a signal processor
such as a surround-sound unit can then be
connected between the preamp and power
amp stages.
A1001
Instructions For Use. Page 6
TROUBLESHOOTING
Basic troubleshooting of an amplifier is similar to troubleshooting of any other
electrical or electronic equipment. Always check the most obvious possible causes
first. To give you a few ideas of what to look for, check the following:
Problem
Probable
Cause
Remedy
No power when
Mains plug not inserted
correctly
Plug in securely
POWER is pressed
No
sound
Volume control is set to
minimum
Turn up the volume
Tape/Source selector (tape Press Tape monitor
monitor) button is
depressed
button
Preamp to power amp links Replace links or switch
removed or surround
processor (or other device
in pre-power amp loop)
switched off or muted
on / un-mute as
appropriate
Unit muted (volume control Un-mute with remote
position LED will be off)
control (position LED
should be on)
Speakers are not
Check speaker cables
connected, or are
connected incorrectly
Sound is not precise, Speakers are connected out Make sure that both
lacking in bass and
stereo image
of phase
speakers
are
correctly
connected
If none of these actions effect a cure, please contact your dealer, or an authorised
Musical Fidelity service agent. Remember, never open the case of the A1001
yourself, as this will invalidate the guarantee.
A1001
Instructions For Use. Page 7
SPECIFICATIONS
A1001 CLASS A SUPER INTEGRATED AMPLIFIER
Power output
200W RMS per channel into 8W
400W RMS per channel into 4W
10 Hz - 30kHz + 1dB
< 0.06% 20Hz - 20kHz to full rated power
< 0.003% @ 1kHz to full rated power
> -91dB unweighted
Frequency response
THD
S/N ratio
> -96dB ‘A’ weighted
Inputs
6 x Line level
Input sensitivity
Power consumption
Power requirement
300mV
1000W (maximum)
100/115/230V AC 50/60Hz
(Factory preset for country)
475 x 164 x 540mm (W x H x D)
Height includes feet, depth includes
terminals and volume knob
30 kgs
Dimensions
Weight
Standard accesories
1 x IEC type mains lead
1 x A1001 remote control handset
2 x batteries (AA, LR6, AM6)
Musical Fidelity reserves the right to make improvements which may result in feature or
specification changes without notice.
A1001
Instructions For Use. Page 8
A1001-97-1
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