Musical Fidelity Stereo Amplifier A1 User Manual

A1 Integrated  
A1 SERIES CLASS A INTEGRATED AMPLIFIER WITH USB INPUT  
INSTRUCTIONS FOR USE  
Thank you for purchasing the Musical Fidelity A1 Integrated amplifier.  
This new incarnation of the A1 Integrated uses a class A biased output stage to deliver the absolute best in  
audio quality with no listener fatigue from crossover distortion artefacts. This results in an astounding  
improvement in musicality and tonal neutrality.  
The A1 is designed to be partnered with future A1 products, as well as our supercharger range. This offers a  
financially lossless upgrade path. As a pure amplifier the A1 is almost perfect. The only limitation, due to  
class A operation, is overall power. When you want to upgrade, the A1 is a perfect driver for the 550K or  
750K superchargers, and was designed with this in mind. This combination yields one of the best  
amplification systems available at any price.  
Used properly and carefully, it should give many years of outstanding musical reproduction.  
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 your audio system,  
Please consult your dealer who is there to help and advise.  
 
SAFETY INFORMATION  
A1 Integrated  
IMPORTANT! (U.K. only)  
This unit is supplied in the U.K. with mains lead fitted with a moulded 13 amp plug. If, for any reason, it is necessary  
to remove the plug, please remove the fuse holder and dispose of the plug safely, out of reach of children.  
It must not be plugged into a mains outlet.  
The wires in the mains lead supplied with this appliance are coloured in accordance with the following code:  
Green and yellow..............Earth  
Blue................................Neutral  
Brown.................................Live  
WARNING - This appliance MUST be earthed  
As the colours of the wires of the mains lead of this appliance may not correspond with the  
coloured markings identifying the terminals in the plug, proceed as follows:  
The wire which is coloured green-and-yellow must be connected to the terminal in the plug which is marked with the  
letter E or coloured green or green-and-yellow, or by the earth symbol :  
The wire which is coloured brown must be connected to the terminal which is marked with the letter L or coloured red.  
The wire which is coloured blue must be connected to the terminal which is marked with the letter N or coloured black.  
If connecting to a BS1363 plug, a 13 amp fuse must be used.  
WARNING:  
ANY MODIFICATIONS TO THIS PRODUCT NOT EXPRESSLY APPROVED  
BY MUSICAL FIDELITY WHO IS THE PARTY RESPONSIBLE FOR  
STANDARDS COMPLIANCE COULD VOID THE USER'S AUTHORITY TO  
OPERATE THIS EQUIPMENT.  
Issue 2: 05th March 2008  
Page 3 of 13  
 
GENERAL ADVICE  
A1 Integrated  
INSTALLATION PRECAUTIONS & USER INFORMATION  
This new A1 is designed and built to provide trouble-free performance, but as with all electronic devices it is necessary  
to observe a few precautions:  
Heed all warnings shown on the back of the product.  
Only connect the A1 to a mains outlet having the same voltage as marked at the back of the unit.  
Always ensure that when disconnecting and reconnecting your audio equipment the mains supply is switched  
off.  
Position the mains lead and signal interconnects where they are not likely to be walked on or trapped by items  
placed on them.  
Do not use near water, or place water-filled containers on the A1, for example, a flower vase or potted plants.  
If water does spill inside, immediately pull out the mains plug from the wall socket and inform your  
dealer, who should then check the unit before further use. Entry of liquid into the A1 is dangerous, and  
may cause electric shock or fire hazard.  
Do not place the unit near direct heat sources such as radiators, direct sunlight or other equipment.  
Do not remove any covers or try to gain access to the inside. There are no internal adjustments or fuses you  
can replace yourself. Refer all service work to an authorised Musical Fidelity agent.  
Note: Unauthorised opening of the equipment will invalidate any warranty claim.  
Dust regularly with a soft cloth or soft brush but be careful when using cleaning or polishing agents - they may  
harm the surface finish.  
The electronics in modern hi-fi equipment is complex and may, therefore, be adversely affected or damaged by  
lightning. For protection of the audio system during electrical storms, remove the mains plugs and disconnect any  
aerial lead.  
If after-sales service is required, to help the dealer identify the A1 please quote the serial number located on the rear  
panel of the unit.  
Issue 2: 05th March 2008  
Page 4 of 13  
 
ITEM DISPOSAL INFORMATION  
A1 Integrated  
DISPOSAL  
AFVAL  
The crossed out wheeled bin label that appears on the  
Het label op de achterzijde van dit apparaat, een  
afvalbak op wielen met een kruis doorgehaald, geeft aan dat dit  
apparaat niet samen met gewoon huishoudafval mag worden  
weggegooid. Om mogelijke schade aan onze leefomgeving te  
voorkomen dient dit apparaat, gescheiden van gewoon  
huishoudelijk afval, te worden afgevoerd zodat het op een  
milieuvriendelijke manier kan worden gerecycled. Neem voor  
beschikbare inzamelplaatsen contact op met uw gemeentelijke  
reinigingsdienst of met uw elektronica leverancier.  
back panel of the product indicates that the product must not be  
disposed of as normal household waste. To prevent possible harm  
to the environment please separate the product from other waste to  
ensure that it can be recycled in an environmentally safe manner.  
Please contact local government office or retailer for available  
collection facilities.  
DISPOSITION  
La poubelle sur roulettes barrées X, qui apparaît en logo  
sur le panneau arrière du produit, indique que celui-ci ne doit pas  
être traité comme un déchet domestique commun. Afin de protéger  
l'environnement, ce produit électronique devra être géré  
séparément et donc recyclé selon les nouvelles normes  
Européennes Rohs concernant les déchets d'appareils électroniques.  
Prière de contacter les services concernés gouvernementaux ou  
votre point de vente pour l'élimination et l'enlèvement de déchets  
électroniques équipés de composants électroniques.  
HÄVITTÄMINEN  
Yliruksattua jäteastiaa kuvaava tarra tuotteen  
takalevyssä kertoo, että tuotetta ei saa käsitellä normaalina  
talousjätteenä. Ympäristön suojelemiseksi on tuote pidettävä  
erillään muusta jätteestä ja se on kierrätettävä ekologisesti  
kestävällä tavalla. Ota yhteyttä laitteen myyjään tai Pirkanmaan  
Ympäristökeskukseen lähimmän kierrätyskeskuksen löytämiseksi.  
AFSKAFNING  
DISPOSAL  
Logoet med en skraldespand med kryds over på bagsiden  
af apparatet indikerer at dette produkt ikke må kasseres som normal  
husholdningsaffald. For at forebygge mulig skade på miljøet, bedes  
De separere dette produkt fra andet affald, og sikre at det bliver  
genbrugt på en miljørigtig måde. Kontakt venligst de lokale  
myndigheder eller din forhandler for oplysning om nærmeste  
tilgængelige opsamlingssted for elektronikaffald.  
La etiqueta cruzada hacia fuera del compartimiento que  
aparece en el panel trasero del producto indica que el producto no  
se debe reciclarse como basura normal de la casa. Para prevenir  
daños posible al ambiente separe por favor el producto de otras  
basura para asegurarse de que puede ser reciclada de una manera  
ambientalmente segura. Entre en contacto por favor a su oficina  
gubernamental local o a su minorista para las instalaciones  
disponibles de la colección.  
∆ΙΑ∆ΙΚΑΣΙΑ ΑΠΟΡΡΙΨΗΣ  
ΤΟ  
ΣΗΜΑ  
ΜΕ  
ΤΟΝ  
∆ΙΑΓΕΓΡΑΜΜΕΝΟ  
RIFIUTI  
ΤΡΟΧΗΛΑΤΟ ΚΑ∆Ο ΑΠΟΡΡΙΜΑΤΩΝ ΣΤΗΝ ΠΙΣΩ ΟΨΗ  
ΤΟΥ ΜΗΧΑΝΗΜΑΤΟΣ  
L'etichetta del cassonetto barrato riportato sul retro  
dell'apparecchio indica che il prodotto non deve essere smaltito  
tramite la procedura normale di smaltimento dei rifiuti domestici.  
Per evitare eventuali danni all'ambiente, separare questo prodotto  
da altri rifiuti domestici in modo che possa venire riciclato in base  
alle procedure di rispetto ambientale. Per maggiori dettagli  
sulle aree di raccolta disponibili, contattate l'ufficio govenativo  
locale od il rivenditore del prodotto.  
∆ΗΛΩΝΕΙ ΟΤΙ ΤΟ ΠΡΟΙΟΝ ΑΥΤΟ ∆ΕΝ ΠΡΕΠΕΙ ΝΑ  
∆ΙΑΧΕΙΡΙΣΘΕΙ ΣΑΝ ΣΥΝΗΘΙΣΜΕΝΟ ΟΙΚΙΑΚΟ ΑΠΟΒΛΗΤΟ.  
ΠΡΟΣ ΑΠΟΦΥΓΗ ΕΝ∆ΕΧΟΜΕΝΗΣ ΕΠΙΒΑΡΥΝΣΗΣ ΤΟΥ  
ΠΕΡΙΒΑΛΛΟΝΤΟΣ, ΞΕΧΩΡΙΣΤΕ ΤΟ ΠΡΟΙΟΝ ΑΠΟ ΤΑ  
ΑΛΛΑ  
ΑΠΟΡΡΙΜΑΤΑ ΩΣΤΕ ΝΑ ΕΞΑΣΦΑΛΙΣΘΕΙ Η ΑΝΑΚΥΚΛΩΣΗ  
ΤΟΥ ΜΕ ΤΟΝ ΠΡΕΠΟΝΤΑ ΤΡΟΠΟ.  
ΠΑΡΑΚΑΛΟΥΜΕ ΝΑ ΕΠΙΚΟΙΝΩΝΗΣΕΤΕ ΜΕ ΤΗΝ ΤΟΠΙΚΗ  
FACHGERECHTE ENTSORGUNG:  
ΥΠΗΡΕΣΙΑ ΑΝΑΚΥΚΛΩΣΗΣ  
Η
ΜΕ ΤΟ ΚΑΤΑΣΤΗΜΑ  
Das auf der Geräterückseite angebrachte Label deutet  
darauf hin, dass das Produkt nicht mit konventionellem  
Hauskehricht entsorgt werden darf. Um Schäden und  
Verschmutzungen an Umwelt und Mensch zu vermeiden, muss das  
Produkt fachgerecht entsorgt und von anderem Abfall getrennt  
werden. Wenden Sie sich bei Fragen hierzu an Ihren Fachhändler  
oder an eine öffentliche Informationsstelle.  
ΑΓΟΡΑΣ ΓΙΑ ΠΕΡΙΣΣΟΤΕΡΕΣ ΛΕΠΤΟΜΕΡΕΙΕΣ.  
Issue 2: 05th March 2008  
Page 5 of 13  
 
INSTALLATION  
A1 Integrated  
INTRODUCTION  
POWER CONNECTIONS  
Congratulations on the purchase of the new A1 Class A  
Integrated amplifier. Great attention has been paid to internal  
layout, isolating each circuit section to prevent possible  
interaction.  
The unit features a top quality USB input DAC to allow direct  
connection to a PC or MAC for listening to MP3/WAV or  
other digital music storage formats.  
The preamplifier sections are our finely tuned and tweaked  
preamplifier, for smooth sound coupled with low noise and  
virtually no distortion. The preamp section includes a top  
quality low noise phono stage which caters for MM cartridge  
users.  
The A1 is supplied with a standard IEC mains cable which  
plugs into the IEC socket at the back of the unit (see P.7)  
AUDIO CONNECTIONS  
Analogue Inputs: Connect all analogue sources to relevant  
analogue inputs (see p.7 For more information). Use good  
quality fully connected (signal and ground) coaxial phono  
cables for all signal connections.  
USB Input: Connect a USB A to B (not supplied) cable  
between computer and USB input if required.  
The power amplifier consists of two class-A amplifier  
modules with separate supplies for the absolute best in  
separation and imaging. Generously rated, they are enough to  
drive even the most demanding loudspeakers with ease. Low  
distortion and very quiet they will deliver all music types  
exactly as the artist originally intended.  
Please note: The USB input is a USB Digital to Analogue  
Converter (DAC), not a “host controller”. It therefore does  
NOT support direct streaming from USB players, media,  
drives etc. It only functions with a personal computer/PDA  
or equivalent attached.  
The resultant performance achieved by this unit is among the  
best in the world. It has excellent signal to noise ratio, low  
distortion, wide bandwidth and dynamic range, with  
extraordinary resolution and fine detail.  
Outputs: Connect loudspeakers to the terminals on the back  
panel marked as LEFT and RIGHT SPEAKER outputs  
The TAPE output allows loop through of analogue signals  
for example, to pass on to recorder or monitor. It is also the  
ideal output to connect our headphone amps into.  
CLEANING  
Before cleaning the unit, switch off power at the mains switch  
and remove the mains plug from the wall socket.  
Clean the cabinet and remote control unit using a moist cloth.  
Using solvents, white spirit or thinners is not advised, as they  
could damage the surface finish.  
The PRE-OUT output allows analogue signals controlled by  
the volume, to pass on to a second amplifier. This is useful  
for bi-amping.  
INSTALLATION  
Position the A1 on a stable, horizontal surface where there is  
no risk of it being knocked, or subjected to vibration such as  
from loudspeakers.  
Important note:  
As a “CLASS A” amplifier, the unit dissipates a quantity of  
power at all times, and it is important that it is adequately  
ventilated. The sides are perforated to allow the smooth flow  
of heat through the unit. It is therefore not recommended that  
the unit is enclosed in a cabinet or placed where the ventilation  
holes on the sides are impeded as this could result in the unit  
cutting out due to excessive heat build-up.  
The A1 must be protected from humidity - if the unit is  
moved from a cold place to a warm room, leave the unit for an  
hour or so to allow sufficient time for the moisture to  
evaporate.  
Issue 2: 05th March 2008  
Page 6 of 13  
 
FACILITIES AND CONNECTION  
A1 Integrated  
FRONT PANEL  
1
2
3
4
5
6
1. ON/OFF Button  
2. ANALOGUE, USB INPUT source selector buttons  
3. DISPLAY  
4. TAPE MONITOR button  
5. VOLUME up/down  
6. IR RECIEVER lens  
REAR PANEL  
7
8
9
10  
11  
12  
13  
14  
7. USB Input (type ‘B’ socket)  
11. CD, TUNER, AUX/HT, TAPE INPUT RCA  
Sockets  
8. PHONO INPUT RCA Sockets  
9. PHONO GROUNDING 4mm post  
10. AUX/HT input configuration switch  
12. PRE, TAPE OUTPUT RCA sockets  
13. LOUDSPEAKER OUTPUTS Left and right  
14. IEC MAINS INPUT  
Issue 2: 05th March 2008  
Page 7 of 13  
 
REMOTE CONTROL  
A1 Integrated  
Remote control Handset  
The universal remote control shown below enables functions from this and related units to be operated from a convenient distance.  
Equivalent buttons on the remote control have the same functions as those on the front panel of the unit. Other functions are only  
available by remote control.  
As the handset uses an invisible infra-red light beam, the front edge must be pointed directly towards the receiver window at the  
front of the player, without visual obstruction between them.  
If the range of the remote control greatly decreases, replace the batteries with new ones. Do not mix old and new batteries - two  
are required, size AAA, LR03 or SUM-4.  
Please dispose of used batteries in accordance to local regulations.  
Tuner Buttons:  
INFO – To access broadcast information  
MENU – to choose options  
BAND – Selects DAB or FM  
STORE – Stores station as preset  
SELECT – To choose preset/DAB station  
AUTO TUNE – finds previous/next broadcast  
MONO/STEREO – Option for weaker FM  
stations  
Amplifier Buttons:  
PRESET ↑ ↓ selects preset  
PHONO – Selects Phono input  
CD – Selects CD input  
TUNE ↑ ↓ steps up/down band  
USB – Selects USB input  
TUNER – Selects TUNER input  
AUX/HT – Selects AUX/HT input  
TAPE – Select TAPE input  
VOLUME UP/DOWN – sets volume level  
MUTE – Mutes speaker outputs until  
pressed again  
CD Buttons:  
TIME – Displays Track Time/Time remaining  
0-9 Buttons – Used to select track numbers  
CHECK – Check pre programmed tracks  
PROGRAM – Programs selection and order of  
tracks  
INTRO – Player plays first 10 seconds of each  
track  
CLEAR – Clears selected pre programmed  
track  
REPEAT – Repeats whole disk or selected tracks  
SEARCH – Fast forward/backward through track  
STOP – Stop playing/Eject CD  
A/B Sets repeat start/end to repeat section  
of track  
SHUFFLE – Plays back tracks in random  
order  
TRACK – Next/previous track  
PAUSE/PLAY – Stop/start CD playback  
Issue 2: 05th March 2008  
Page 8 of 13  
 
AMPLIFIER OPERATION  
A1 Integrated  
STARTING  
PHONO  
Once all connections are made, switch on the unit, using  
the POWER button front of the unit. The backlit  
display will light. The display will indicate the product  
name will show but speaker outputs are muted, for about  
fifteen seconds, so no sound will be heard from the  
speakers.  
To use the phono (MM) input, connect turntable  
cartridge outputs to the phono input RCA sockets (see  
p.7). Select PHONO input using the source up/down  
buttons until PHONO is shown in the display.  
PHONO  
™™™™  
33  
A1  
V0.0  
MUTE  
Selecting the PHONO input can also be achieved using  
the corresponding button on the remote handset, (see p.  
8).  
Once the 15 seconds is up the volume and selected  
source input will indicate unit is settled, and ready for  
use.  
CD  
To use the CD input, connect CD player outputs to the  
CD input RCA sockets (see p.7). Select CD input using  
the source up/down buttons until CD is shown in the  
display.  
CD  
™™™™  
33  
VOLUME  
The volume should be adjusted for normal listening  
levels. This is done by pressing the volume up/down  
buttons on the front panel. The volume level is readily  
identifiable on the display bargraph and numeric  
indicator, in the above example it is set to 33% of the  
full range.  
Adjusting the volume can also be achieved using the  
remote handset, using the volume up/down buttons (see  
p. 9).  
CD  
™™™™  
33  
Selecting the CD input can also be achieved using the  
corresponding button on the remote handset, (see p. 8).  
TUNER  
To use the tuner input, connect tuner outputs to the tuner  
input RCA sockets (see p.7). Select TUNER input using  
the source up/down buttons until TUNER is shown in  
the display.  
MUTE (remote only)  
The sound from the speakers may be muted by use of  
the MUTE button on the remote. Press once, and  
MUTE will show in the display indicating muted state.  
No sound will be heard from the speakers.  
TUNER  
™™™™  
33  
Selecting the TUNER input can also be achieved using  
the corresponding button on the remote handset, (see p.  
8).  
CD  
MUTE  
33  
AUX/HT  
To return to listening; simply press the MUTE button  
To use the AUX, as standard input, check the AUX/HT  
switch (back panel) is set to AUX position. The display  
will then refer to this input as AUX.  
again so MUTE is no longer displayed.  
USB  
To use the USB input, connect computer USB output to  
the USB socket (see p.7). Select USB input using the  
source up/down buttons until USB is shown in the  
display.  
AUX  
™™™™  
33  
Connect line outs from source to the AUX input (see  
p.7). Select AUX input using the source up/down buttons  
until AUX is shown in the display.  
USB  
™™™™  
33  
To use the AUX, as Home Theatre direct input, move  
the AUX/HT switch to the HT position.  
Selecting the USB input can also be achieved using the  
corresponding button on the remote handset, (see p. 8).  
HT  
™™™™  
33  
The display will then refer to the input as HT. Connect  
Issue 2: 05th March 2008  
Page 9 of 13  
 
AMPLIFIER OPERATION  
A1 Integrated  
line level outputs from home theatre processor to the  
AUX/HT input (see p.7). Volume control is now only  
possible (for this input) on the external processor.  
Please note connecting standard line signals to these  
inputs in HT mode will cause very loud and damaging  
signals at speakers that cannot be controlled through  
the volume control. Please ensure correct AUX/HT  
switch position before using this input.  
Computer setup for input USB input  
A good quality USB A to B cable is required to connect  
the unit to the computer.  
Plug the B (square) end into the socket in the back of the  
A1.  
Plug the A (rectangle) end into a free USB socket on the  
computer.  
Selecting the AUX/HT input can also be achieved using  
the remote handset, using the corresponding button (see  
p. 8), but AUX/HT switching is not available on the  
remote.  
The computer should detect the new hardware and  
install a generic driver automatically (No setup or driver  
disk required).  
CD, MP3, WAV files played on any software should  
now play through the A1. This device has been designed  
to work with PC Windows 98, ME, 2000, XP as well as  
Apple Macintosh OS X.  
TAPE  
To use the TAPE input, connect external source to the  
TAPE input (see p.7). Select TAPE input using the  
source up/down buttons until TAPE is shown in the  
display.  
Please note:  
This device is a high speed serial data processor, and by  
its nature, requires a very high volume of USB  
bandwidth. It will benefit greatly from being the only  
device connected on its USB ‘bus’. Sharing the same bus  
with other devices may cause unwanted artefacts such as  
dropouts or temporary loss of signal. This especially  
includes the use of the A1 on a USB hub/splitter  
alongside other USB components.  
TAPE  
™™™™  
33  
Selecting the TAPE input can also be achieved using  
the corresponding button on the remote handset, (see p.  
8).  
PC users  
RECORDING AND TAPE MONITOR  
Check the computer has picked up the device and is  
currently using it by clicking: (most Windows versions)  
To record to tape, (or alternatively CD recorder, DAT,  
minidisk or computer soundcard analogue input)  
connect the tape out to the tape recorder line in. Press  
the input selector button on the front panel or remote  
control. This source will now be routed to the A1  
TAPE OUT for recording by tape deck.  
The recording can be directly monitored through the  
loudspeakers by pressing the TAPE MONITOR  
button. Press again to return back to the input being  
recorded.  
-
-
-
-
-
Start  
Settings  
Control panel  
Sounds and Multimedia  
Audio  
Check that “USB audio device” appears under  
PREFERRED AUDIO DEVICE tab  
On some 3 head tape decks there is an additional  
tape/source switch which should be in the tape position  
for this to work. If in doubt, please consult tape deck  
operating manual.  
A second mixer will now be available which will be the  
default mixer whenever the A1 is plugged in. Use this  
mixer to select the source or adjust levels if required.  
Note - adjustment of the volume control has no effect  
on the recording level.  
Mac users  
Check the computer has picked up the device and is  
currently using it by clicking: (MAC OS X)  
-
-
-
System preferences  
Hardware  
Sound  
Check that “USB audio DAC” is selected under the  
OUTPUT tab.  
If the computer’s warning sounds/chimes are to played  
through the A1, make sure it is selected under the  
SOUND EFFECTS tab too.  
Note: USB may also be selected as an output in some  
individual programs  
Issue 2: 05th March 2008  
Page 10 of 13  
 
AMPLIFIER PROBLEMS?  
A1 Integrated  
Basic problem-solving with an amplifier is similar to troubleshooting other electrical or electronic equipment. Always check the most obvious possible causes first,  
such as the following examples:  
Problem  
Probable Cause  
Remedy  
No power when POWER button is pressed  
Mains power plug is not fully inserted into rear  
socket  
Plug in securely.  
Unit overheated  
Check unit’s ventilation holes are not obstructed and  
allow unit to cool down. Check speaker/wiring for  
short circuits before switching on again.  
No sound  
Mute function is still active  
Press the MUTE button on the remote control to  
cancel.  
Check audio input lead connections  
Check speaker cables  
Wrong connections between input sources and the  
unit  
Speakers not connected, or incorrectly wired  
Sound cut out and/or “Output Overload” displayed  
Loose connection  
Check speaker and input connections  
Output overload or short circuit  
Switch unit off. Check speaker connections for  
shorting strands or wires. When all has been double-  
checked reduce volume and switch unit back on.  
N.B. Take great care when bi-wiring or bi-amping  
that speaker bass and treble linking straps are  
removed; see speaker manual for more information  
Sound is not precise, lacking in bass and stereo  
image  
Speakers are connected out of phase, i.e.,  
connections to one speaker (+ and -) are reversed  
Ensure speakers are connected with same polarity at  
amplifier and speaker ends.  
Hum  
Audio connector plug not fully pushed in  
Cable Fault  
Insert plug securely  
Check cable is connected at both ends.  
Unsuitable Cable  
N.B. Some esoteric cables have internal wiring  
intentionally disconnected/modified. For best results  
on all inputs analogue AND digital, please use good  
quality screened coax; signal and screens both  
separately connected at both ends.  
(e.g. cable grounds not connected)  
No audio output, or too low level output  
No audio output from USB input  
Incorrect or missing connections  
Check connections and make sure they are secure.  
USB Driver not selected (PC or MAC)  
See P.9 PC users or MAC users section  
USB Cable not connected  
Check connections and make sure they are secure.  
USB Driver not selected (PC or MAC)  
See P.9 PC users or Mac users section  
Not detected when connected to USB  
USB Cable faulty  
Check and replace cable  
USB not working/enabled on computer  
Correct USB drivers not installed  
Check USB port functions with another device.  
Please check with the computer manufacturer.  
Enquire about USB driver or update.  
(can happen particularly with factory- preinstalled  
Windows operating systems)  
Dropouts in sound (USB input)  
Shared USB port with another device  
Computer busy with another application  
Computer low on resources  
Avoid sharing the USB port with other devices, if  
possible.  
At times an application (program) may intervene,  
sometimes invisibly e.g. a virus scanner. When this  
happens, computer resources are temporarily used  
up, and playback may falter. This is not a fault. Try  
running fewer applications if possible.  
Remote control does not work  
Amplifier’s POWER switch is set to off  
Unit overheated  
Set switch to on  
Check for excessive heat build-up.  
Insert batteries correctly  
Change batteries for a new set  
One or more batteries fitted the wrong way round  
Batteries are flat  
Remote control is not pointed directly towards the  
front panel of the amplifier  
Ensure there is no obstruction between the remote  
control and amplifier front.  
Interference from another source  
Lighting such as fluorescent, incandescent, or even  
sunlight contains large amounts of infra red  
radiation. Ensure such sources are not shining  
directly on the infra red window as this could  
swamp the signal from the remote control.  
Also check the system and any other nearby remotes  
for stuck buttons  
Remote control range has greatly reduced  
Batteries are running out  
Change batteries for a new set.  
If none of these actions affect a cure, please contact the dealer, or an authorised Musical Fidelity service agent. Remember; never open the case of the A1, as this  
will invalidate the guarantee.  
Issue 2: 05th March 2008  
Page 11 of 13  
 
AMPLIFIER SPECIFICATIONS  
A1 Integrated  
Output:  
Voltage, RMS  
Voltage, Peak-to-peak  
Power  
Current peak-to-peak  
Damping factor  
17V  
48V  
36W  
22.8A  
142  
Output devices per channel  
Pre-out impedance  
2
47 ohms  
Line input:  
THD + N, 20Hz to 20 kHz  
Signal / noise ratio  
Input sensitivity for full  
power  
<0.02%  
-94dB A-wtd.  
120mV  
Input impedance  
43K ohms  
37dB  
>52dB  
Overload margin  
Channel separation  
Frequency response  
20Hz to 20kHz +0,-0.3dB  
2 0 .0  
1 5 .0  
1 0 .0  
5 .0  
Phono input:  
Cartridge type  
Phono input response  
MM  
RIAA/IEC combined,  
see graph  
-81dB A-wtd.  
3.3mV  
47K ohms  
29dB  
P H O N O R E S P O N S E  
0 .0  
d B  
Signal/noise ratio  
Input sensitivity  
Input impedance  
Overload margin  
RIA  
P HO NO  
RIA /IEC  
A
- 5 .0  
- 1 0 .0  
- 1 5 .0  
- 2 0 .0  
A
2 0 .0  
3 1 .5  
5 0 .0  
8 0 .0  
1 2 5  
2 0 0  
3 1 5  
5 0 0  
1 0 0 0  
1 6 0 0  
2 5 0 0  
4 0 0 0  
6 3 0 0 1 0 0 0 0 1 6 0 0 0  
F re q u e n c y (H z )  
Connections:  
Line level inputs  
Line level outputs  
4 pairs line level RCA connectors  
1 pair phono (moving magnet) level RCA connectors  
1 pair RCA preamp line outputs (level controlled by volume)  
1 pair RCA tape line outputs (fixed level)  
Digital inputs:  
Speaker outputs:  
1 USB 1.1 (32, 44, 48kHz sample rates) type B connection for computer/pda  
1 pair 4mm banana plug/binding posts per channel  
Power requirement:  
Accessories:  
100 / 115 / 230Volts AC 50 / 130W maximum  
60Hz (factory pre-set),  
Mains lead  
Remote control  
Batteries  
10 Amp IEC type  
A1, universal  
Size LR03 or  
1 off  
1 off  
2 off  
AAA, manganese  
alkaline type  
Dimensions:  
Unit only  
440mm  
77mm  
290mm  
17 inches  
3 inches  
11 ½ inches  
wide  
high inc. feet  
deep inc. terminals  
Unit in shipping carton  
536mm  
200mm  
385mm  
21 inches  
7 ¾ inches  
15 ¼ inches  
wide  
high  
deep  
Weight:  
7.15 kg  
10.5 kg  
15 ¾ lbs  
23 lbs  
Unboxed  
In shipping carton,  
with all accessories  
Musical Fidelity reserves the right to make improvements which may result in specification or feature changes without notice.  
Issue 2: 05th March 2008  
Page 12 of 13  
 
MANUAL REVISION  
A1 Integrated  
RELEASE  
DATE  
16th January 2008  
05th March 2008  
CHANGES  
Issue 1  
Issue 2  
1st issue  
Corrected front panel  
buttons  
Issue 2: 05th March 2008  
Page 13 of 13  
 

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