Musical Fidelity Primo Owners manual
PRIMO
ZERO FEEDBACK FULLY BALANCED VALVE PRE-AMPLIFIER
INSTRUCTION MANUAL
Thank you for purchasing the Musical Fidelity Primo Valve Preamplifier.
This preamplifier uses our top quality, finely tuned balanced valve preamplifier circuits to deliver the absolute best in audio quality with no
listener fatigue, or transistor harshness. In addition there is no global feedback which reduces feedback related artefacts in the music.
The unit features five fully balanced signal inputs, which allow direct connection to balanced sources and outputs for the ultimate in dynamic
range and low-noise performance. The power supply and associated mains transformer are screened off in a mu-metal enclosure to isolate
the sensitive preamplifier circuits from mains noise and interference
This results in an astounding improvement in musicality and tonal neutrality and visually pleasing setup
Ease of use is augmented by the unit producing a trigger output to switch on any amplifier which accepts 5-12V trigger input, as well as
trigger input which will automatically allow the preamp itself to be controlled from a trigger source.
The Primo Valve Preamplifier is designed to be partnered with all current and future AMS and TITAN products, connecting directly
balanced inputs The Primo Valve Preamplifier is a perfect preamplifier for the 550K or 750K superchargers, and was designed with this in
mind. It can be connected to the line level inputs of the Superchargers (or, recommended, the XLR input on the 750K) as a normal
preamplifier. 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.
Primo preamplifier
CONTENTS
PAGE Section
3
Safety information
- - Mains plug (U.K. only)
Modification warning
4 General advice
- - Installation precautions
User information
5 Disposal information
EU disposal information
-
6 Installation
7
Facilities and connections
8 Remote control
Introduction
-
Cleaning
-
Installation
-
Audio connection
- Main unit front & rear panels
- Operation and illustration
-
9
Operation
Starting, Volume, Mute, Phono, CD,
TUNER, AUX/HT, TAPE, Recording
10 Problems?
- Basic amplifier fault finding
Issue 1
11 Specifications
12 Manual history
Page 2 of 12
Primo preamplifier
SAFETY INFORMATION
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:
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.
Green and yellow..............Earth
Blue................................Neutral
Brown.................................Live
Issue 1
Page 3 of 12
Primo preamplifier
GENERAL ADVICE
INSTALLATION PRECAUTIONS & USER INFORMATION
This new Primo Valve Preamplifier 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 Primo Valve Preamplifier 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 Primo, 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
the dealer, who should then check the unit before further use. Entry of liquid into the Primo Valve
Preamplifier 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.
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 Primo Valve Preamplifier please quote the serial number
located on the rear panel of the unit.
DANGER!
HIGH VOLTAGE
Do not remove any covers or try to gain access to the inside. The voltages contained within can
cause death or serious injury. There are no internal user adjustments or fuses to replace. All
service work MUST be referred to an authorised Musical Fidelity agent.
Issue 1
Note: Unauthorised opening of the equipment will invalidate any warranty claim.
Page 4 of 12
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