Audion Quattro User Manual

Quattro

Pre-Amplifiers

User Manual

Models Covered

Quattro Pre-Amplifier 2 Box
Quattro Pre-Amplifier 4 Box

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Introduction

Congratulations on your purchase of the World acclaimed
“Quattro” pre-amplifier from Audion.

Your Audion Amplifier is the result of nearly 20 years exhaustive
research and development culminating in our current world class
product. The chassis is made of anodised aluminium designed to
minimise magnetic interference and reduce internal noise to an
absolute minimum. All our amplifiers are hand built using only the
finest components available offering the highest quality.

The Premier Quattro is a precision made pre -amplifier. due to the
extensive use of Silver wire and high accuracy components a
burn-in period of approx. 100 hours plus is required before the
benefits of this world class award winning product reaches its full
potential. The components are meticulousy selected for sound
performance and the entire product is built to military specification.

Warranty

All of our products carry a 2 (two) year worldwide parts and labour
warranty (less delivery charges). All valves/tubes are guaranteed
for a period of 6 (six) months. This does not affect your statutory
rights.

Getting Started

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Upon opening your box you will find:

1. Audion Pre-Amplifier

2. Power cord

3. This User Manual

4. Product Registration and Warranty form

5. Valves/tubes
Please keep all packaging and store in a dry and safe place.
Carefully remove the Audion Amplifier from its packaging and store

both the box and the foam in a safe place, should, in the unlikely
event that you ever need to return your Audion to us for
maintenance, upgrading or servicing. The packaging has been
specifically designed to protect your amplifier.

Before attempting to connect your Audion please read carefully
and understand thoroughly the contents of this manual. Keep this
manual near you when installing your Audion so it is handy for
reference.

This manual is designed to assist both novice and experienced
persons in achiev ing satisfaction from your Audion. It describes the
features and operation

Please Note.
As with any electrical product extreme caution should be

exercised. Do not place your Audion in direct sunlight. There are
no user serviceable parts inside. The valves/tubes run HOT in
normal operation, under no circumstance during operation should
they be touched. If it becomes necessary to replace a valve/tube
please allow at least 20 minutes from switching off for the unit to
cool.

Valves/Tubes

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You will now need to place the valves/tubes into your Audion. The
Quattro uses 4 x 6922 or 4 x E88CC in the left and Right hand side
front and rear (2 box) and also the (4 box) and none in the
separate power supply. The Quattro ships with all its tubes in
place. It is imperative that the tubes are kept in their original
position as they have been carefully selected for optimum
performance and minimum noise. If it is necessary to change or
replace a tube it is very important that all tubes are matched.

If you have never handled a valve/tube before be careful – they
are similar in properties to a light bulb and just as easily breakable.
In use they can run as hot as a light bulb – SO BE CAREFUL.

The 6922 valve/tubes will only fit one way around into its
respective socket. Before inserting check that the pins are straight
and that there is no physical damage to the glass envelope. A
small downward push is all that is needed to insert the valve/tube
make sure that the pins align and that the orientation is correct. Do
not use excessive force. Your Quattro’s tubes have been carefully
selected and matched to your pre -amplifier. Each tube is marked
with a number 1 to 4 they go into your pre-amplifier as follows: -

1

4

2

3

All Audion valve/tubes are dynamically selected and where
applicable are supplied as matched pairs or quads. All are
supplied with a six (6) month return to base warranty.

Please Note

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Inserting the valve/tubes the wrong way around will at the very
least damage the valve bas e pins and may result in a loose valve
causing crackling.

WARNING – Do not attempt to remove or replace valves/tubes
whilst your Audion is in operation, as by so doing you could
destroy the amplifiers circuitry – risk electrical shock to yourself
and invalidate your Audion’s warranty.

Installation

Positioning Your Audion
You will probably have in mind the location to place your Audion

but remember, valves/tubes get warm and need a good circulation
of air.

Connecting
Your Audion is supplied with a power cord for your country of

operation. However we recommend connecting your input and
loudspeaker cables prior to connecting the power cord.

OFF ON

12345Tape12

Outputs

Inputs

Ground

Lift

OFF

ON

GND

Audion Quattro (2 box) Pre-Amplifier Rear Panel Layout

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All lettering in brilliant white

12345Tape12

Outputs

Inputs

Ground

Lift

OFF

ON

GND

Audion Quattro (4 box) Pre-Amplifier Rear Panel Layout

POWER

Power out connector

0

1

H.T.

Audion Quattro (4 box) Power Supply Rear Panel

First connect audio input leads to the input RCA connectors. The
left mono- block black sockets are for the Left input(s), the right
mono- block red sockets are for the Right channel(s).

Next, connect the output cables from your Audion Pre -Amplifier to
your Audion Power Amplifier. For all models the left and right
channels are marked by red/black colouring and also their names
ie left, right etc. Your connection cables should be of a suitable
quality and connect to the corresponding red/black RCA
connectors of your source equipment. We recommend the use of
Audion Electron Interconnect cables. The output cables should
connect between your Premier and the corresponding red/black
RCA connectors of your power amplifier. For best results we
recommend the use of an Audion Power Amplifier.

The ground lift switch is used to effectively reduce a ground
feedback loop and hence noise from some installations. Finally
connect the power cord to a mains electricity supply. Before

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proceeding – Are all the connections fitted correctly and securely
tightened?

Before switching your Audion on for the first time, make sure ALL
volume controls are turned completely down on both the Quattro
and your power amplifier. Once the units have been switched on
and allowed to warm up for a few minutes, gradually bring the
volume control on the power amplifier to maximum. Once at
maximum the volume on the Quattro can be increased to your
personal listening taste. When using the stepped attenuators it is
normal to feel the click of the volume control. Stepped attenuators
provide a much greater control and more precise balancing on the
mono- block pairs.

Using your Audion

Congratulations you are now ready to switch your Audion on. On
the rear panel locate the on/off button. Push the button upwards to
position 1, on the 2 box version. On the 4 box locate the on/off
button on the rear of the power supply unit. This has now turned
your Audion on. You will notice if everything has been installed
correctly that your valves/tubes are starting to glow, your Audion is
now “Warming up”. We recommend that an initial few minutes is
allowed for the warm up process to take place. A valve/tube will
change its audio characteristics slightly once it has reached its
nominal operating temperature.

Select your sound source, CD, record, etc. and play. Once your
source has started playing adjust the volume control to your
required level.

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On the Standard models, the four switches correspond to the five
inputs on the rear and can be switched in and out accordingly.

Audion Quattro pre- Amplifier Front Panel

Switch 1 Down, 2, 3 & 4 Up = Input 1. Moving Coil Cartridge
Phono

Switch 2 Down, 1,3 &4 Up = Input 2.. Line Level Input

Switch 3 Down, 1,2 & 4 Up = Input 3.. Line Level Input

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Switch 4 Down, 1,2 & 3 Up = Input 4.. Line Level Input

Switch 1,2, 3 & 4 Up = Input 5.. Line Level Input

OFF ON

12345Tape12

Outputs

Inputs

Ground

Lift

OFF

ON

GND

Outputs 1 and 2 are the same for anything that has been selected.
The tape output is an un-attenuated output corresponding to
whatever is selected.

In general use your Audion should give many years of trouble free
use. The anodised aluminium chassis should be wiped regularly
with a clean lint free cloth to remove dust. Under no circumstances
should solvent or solvent based products be used on or near your
Audion.

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Please remember to fill in and return your warranty registration
form to us at the address at the end of this manual.

Enjoy your Audion.

Technical Specifications

Quattro (2 box)

Sensitivity Ref – 0dbV 0.4mV MC Phono Phase - Correct
Distortion @ 1V <0.015% No Feedback Noise (CCIR) <80 db
Frequency Response: 20 – 205KHz ±1 db RIAA Signal to Noise: >70 db
Inputs: 1 MC Phono, 4 Line Outputs: 2 Main Out , 1 x tape
Consumption: 12 Watts Tubes: 4 x 6922 or 4 x E88CC
Impedance: 47K / 254 Ohms

Quattro (4 box) (2 x Pre-amp + 2 x Power supply)

Sensitivity Ref – 0dbV 0.4mV MC Phono Phase - Correct
Distortion @ 1V <0.010% No Feedback Noise (CCIR) <80 db
Frequency Response: 20 – 205KHz ±1 db RIAA Signal to Noise: >70 db
Inputs: 1 MC Phono, 4 Line Outputs: 2 Main Out, 1 x tape
Consumption: 12 Watts Tubes: 4 x 6922 or 4 x E88CC
Impedance: 47K / 254 Ohms

We recommend for this high end product,
Audion Electron Interconnect cables

Audion Electron Power Cords

Audion International
Chez Reynaud, Le Haut Mont
17360, La Genetouze, France
www.audion.co.uk

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