FEZZ AUDIO Mira Ceti 2a3 Black ice, Mira Ceti 2a3 Burning red, Mira Ceti 2a3 Bleach, Mira Ceti 2a3 Big calm NEWmanualMiraCeti2a3ENG.pdf

Mira Ceti 2a3

USER’S MANUAL

SAFETY TIPS______________________________________________

In order to obtain the highest possible sound reproduction quality and
for the sake of your own safety, please kindly refer to the following
safety guidelines and please adhere to them.

• Never place the Fezz Audio Mira Ceti 2a3 amplifier near heat sources, such as

radiators, heaters or direct sunlight. Ensure adequate ventilation and airflow

• We also warn against exposure of the amplifier to conditions such as very low

temperatures and/or high humidity.

• During normal operation, the vacuum tubes radiate significant amounts of heat -

there is a risk of burns.

• The amplifier should be plugged directly into a wall socket. If you must use an

extension cord, please make sure that it has load parameters sufficient to ensure
proper handling of current delivery to the device.

• When cleaning, always disconnect the Mira Ceti 2a3 from the power source. Use a

dry, soft cloth. Do not use water or cleaning agents.

• If your amplifier starts to misbehave or to work incorrectly, if it’s temperature gets

too high or you start feeling smoke - immediately disconnect the device from the
mains.

• Due to the risk of exposure to high voltages – please do not open the lid of the

amplifier. ATTENTION: This warning remains in force also in a situation where the
device is already disconnected from the wall outlet.

• Always replace fuses in accordance with the original, intended specification.

• Do not make repairs on your own, or adjustments beyond those as described in this

manual. Execution of any unauthorized repairs or modifications of the device result
in a loss of warranty.

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TABLE OF CONTENTS_______________________________________

SAFETY TIPS 2

INTRODUCTION 4

Vacuum tube amplfier 4

INSTALLATION OF THE DEVICE 5

Unpacking 5

Contents of the package 5

Discription of elements of the amplifier 6

Installation of the vacuum tubes 7

Where to place Your amplifier 7

INTERCONNECTIONS 8

Hook-up of the speakers 9

Hook-up of the signal sources 9

Hook-up of the supply cord 9

FIRST POWER-UP AND GETTING STARTED 9

„Burning-in” the amplifier 10

Replacement of the vacuum tubes 10

OPTIONAL EQUIPMENT 11

HT (pre-in) input 11

Remote control 11

Bluetooth module 11

TROUBLE-SHOOTING GUIDE 12

TECHNICAL DATA 12

DECLARATION OF CE CONFORMITY 13

WYGRZEWANIE WZMACNIACZA ___15___

WARUNKI GWARANCJI OGRANICZONEJ ___18___

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INTRODUCTION___________________________________________

Thank you for Your trust and for choosing the Fezz Audio Mira Ceti 2a3 amplifier.

Mira Ceti – the world’s only single-ended tube amplifier, the construction of chich is based
on toroid al speakers output transformers. Mira Ceti is characterized by an out standing, full
saturated midtone, by dynamics and a solid bass. Tonal charakter is covered with a sensu al
tube mist which provides excellent reproduction of blues, jazz and classical music.

VACUUM TUBE AMPLIFIER

Many of us, when looking upon audio amplifiers of decades ago, keep repeating a slogan,
like a mantra: "Such things are not manufactured anymore". When we finalny manage to
acquire such a amplifier, we treat it in a very unique way. We look for the best possible
location to present it, we adore the moment that we switch it on and we shall certainly not
fail to mention in passing about this new "treasure" of ours to Any of our visiting guests.
Whatever we do is all underlined by a great feeling of fondness to those times long past.
Why is this happening? The most likely reason is that it is a vacuum tube amplifier. An
amplifier with a specific warmth to its sound, with a natural ambience, timber. We also do
know that the ‘Big Names’ have created their memorable music albums using vacuum tubes.
When one explores this topic in depth, it turns out that many a prominent musician, till this
present day, plays backmusic and creates music using solely analog amplifiers, and they
justify their decision with just a few words: "The vacuum tube simply sounds better, it has a
soul and an ambience".

Once that we purchase such an amplifier, set it up, hook it up, a kind of hesitance kicks in …
"Gee, this equipment is 40 years old". Will it continue to be reliable? We are aware that
there is contemporary production of vacuum tube amplifiers out there, but these amplifiers
are very expensive. Thus, in praxis, they are exclusively destined for the audiophile circles.

And it is at this very point where the unique offering of Fezz Audio comes into play. A unique
vacuum tube sound, made available at a price point similar to a new, "transistor" based
device as sourced from a market.

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INSTALLATION OF THE DEVICE_______________________________

UNPACKING

Please kindly check if the packaging of the Mira Ceti 2a3 amplifier has not been damaged
during transit. If you find any damages, please immediately contact your dealer. Remove the
amplifier and accessories from the packaging. Make sure that the content is not damaged.

Do not connect the device to the power supply if it has visible signs of
damage on it.

Please do not dispose of the original packaging, so as to facilitate possible shipment of the
device in the future.

CONTENTS OF THE PACKAGE

The package should contain:

• Fezz Audio Mira Ceti 2a3 vacuum tube amplifier

• vacuum tube of type 2a3 by Sovtec -2 pcs.

• vacuum tube of type 6sn7 by Electro Harmonix -2 pcs.

• vacuum tube protective cage (optional)

• power cord

• user’s manual

• cotton gloves

• remote control (optional)

If any of the above items are missing in your package, contact your dealer immediately.

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DISCRIPTION OF ELEMENTS OF THE AMPLIFIER

1,4) 2a3 vacuum tubes sockets

2,3) 6sn7 vacuum tube sockets

5) volume level potentiometer

6) input source selector

7) housings for the output transformers

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Excesive force may damage the socket and/or the pins of the vacuum tubes.

that produce large amounts of heat.

INSTALLATION OF THE VACUUM TUBES

Place the Mira Ceti 2a3 amplifier on a stable surface. Carefully remove the vacuum tubes
from their packaging and install them in the appropriate sockets, according to the stickers on
tube boxes starts from a left side.

The pins in the base of each of the vacuum tubes are “coded”, and this has the result that
the insertion of the vacuum tube into the socket is possible only in one correct and
appropriate orientation. If, whilst inserting the vacuum tube you sense resistance, and you
can not push the tube into the socket, please check the orientation of its pins, rotate the
tube to the correct position and try again.

WHERE TO PLACE YOUR AMPLIFIER

Due to the presence of high temperatures during normal operation of the vacuum tubes, the
location that you pick to place your amplifier should ensure ample ventilation, a free flow of
air. Please maintain at least 10 cm clearance between the housing of the amplifier, together
with the vacuum tubes, and other devices or elements of the interior. The sound quality may
be degraded as a result of vibrations. Therefore we recommended to place the amplifier on
a flat and stable surface.

Never place the Fezz Audio Mira Ceti 2a3 amplifier in the vicinity of sources

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INTERCONNECTIONS_______________________________________

1) source signal inputs

2) speakers outputs for the right channel

3) speakers outputs for the left channel

4) socket for the main fuse

5) IEC power supply cord socket

6) mains switch

The figure above shows the rear panel view of the Fezz Audio Mira Ceti 2a3 amplifier,
together with a description of the inputs and outputs allowing for connection of the other
elements of your audio system.

To avoid electrostatic shock to the components of the amplifier, please
touch a grounded conductive surface before making any connections .

Any and all connections must be made whilst the device is disconnected
from the mains power supply. Before making any such connections, make
sure that the amplifier is switched off.

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Follow the instructions below to connect Your sound system correctly.

STEP 1 / HOOK-UP OF THE SPEAKERS

Check the impedance of the speaker set that you posses. Connect the speaker cable to the
appropriate terminals on the rear panel of the amplifier. Depending on the impedance of the
speakers that you posses, connect it to the terminal marked either 4 Ω or 8 Ω. If your
speaker impedance is 6 Ω - connect the speaker wire to the terminal 8 Ω.

STEP 2 / HOOK-UP OF THE SIGNAL SOURCES

Connect the signal source to the amplifier inputs IN1, IN2 or IN3. Select the source of input
signal by rotating the input selector located on the front panel of the amplifier. In order to
achieve the highest sound quality, use only high-quality RCA cables. Pay attention to the
proper connection and distinction of the right (R) and the left (L) channels. For the best
sound quality, we suggest using the Fezz FAC 01 interconnect cable dedicated for Fezz Audio
vacuum tube amplifiers.

To connect a turntable, You will need to use an external phono MC/MM
preamplifier or turnatble with a built-in preamplifier.

STEP 3 / HOOK-UP OF THE POWER SUPPLY CORD

Make sure that the amplifier is switched off. Connect the power cord to the IEC socket on
the rear panel of the amplifier.
The amplifier is designed to operate at a rated voltage of 220-230V / 50-60Hz. Connecting
the device to a mains network with incorrect parameters can lead to damage that is not
covered by manufacturers warranty.

FIRST POWER-UP AND GETTING STARTED______________________

Make sure that all of your wiring is connected in accordance with the information as
provided above on page 9 of this manual.
Select the source of signal using the rotary selector switch located on the front panel. Set the
volume control to minimum. Turn on the mains power of the Mira Ceti 2a3 amplifier – the
vacuum tubes shall begin to glow. Make sure that the sound source is turned on, playing,
and then gradually increase the volume level by turning the potentiometer.

The operation of the amplifier narrows down to adjusting the volume via VOLUME
potentiometer and selecting an audio signal source via rotation of the SOURCE switch.

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”BURNING-IN” THE AMPLIFIER

Any tube amplifier requires an initial pre-heating (or "burn-in") period, in order so that it
achieves its full sonic potential. This is due to the presence of residua polarization of
dielectric elements and due to a necessary stabilization of working parameters of the
vacuum tubes. The stabilization of the electrical parameters of the system occurs in a natural
process whilst playing music through your audio system.

A preliminary degree of pre-heating of the amplifier is reached after about 10 hours of quiet
music playback.

The full sonic capabilities shall stabilize and unfold within a time-span ranging from
40 to 60 hours of music reproduction at a moderate volume levels.

In the initial period of operation of the amplifier it is advisable to avoid short-term
operation periods of the amplifier. Once activated, it should remain operational for a
period of about 4-6 hours.

REPLACEMENT OF THE VACUUM TUBES

Your amplifier is equpped with automatic bias module. It’s necessary to use vacuum tubes
that have previously been pre-selected and paired.

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OPTIONAL EQUIPMENT_________________________________

HT (pre-in) input

The additional HT (Pre-in) signal input makes it possible to use this amplifier as a stereo
power amplifier. In order to make this possible, it is necessary that you have a separate
preamplifier with its own volume control, or a receiver with ‘Pre-out’ output.

REMOTE CONTROL

The remote control anables remote adjustment of the volume level.

Never directly connect sources such as a CD player, DVD player, BluRay
players, DAC or similar devices to the HT (pre-in) input. The HT input is
specifically and exclusively designed for use with preamplifiers with
adjustable output volume and with recivers which are equipped with a „pre­out”

BLUETOOTH MODULE

1. Select the source of input signal to “3”

2. Turn the Bluetooth mode ON (on your device) and scan for Bluetooth devices. You

will see “CSRA64215” on the device list. Select, connect and pair both devices.

3. To pair the amplifier with another Bluetooth signal source, please follow the

instructions below:

- Turn the Bluetooth mode OFF on the previously used device

- Turn the Mira Ceti 2a3 amplifier OFF for approx. one minute

- Turn the Mira Ceti 2a3 amplifier ON

- Turn the Bluetooth mode ON (on your device) and scan for Bluetooth devices.

You will see “CSRA64215” on the device list. Select, connect and pair both
devices.

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TROUBLE-SHOOTING GUIDE_________________________________

After turning the power switch to the ON

A blown fuse

Please exchange to faulty fuse to a new

one

An improper connection of the mains cable

Please check if the plugs of the mains cable

The sound produced by the amplifier is

An improper placement of the vacuum

Switch off the

amplifier. Wait until the

One of the driver tubes (6sn7) has lost its

Switch off the amplifier. Wai

t until the

One of the

p

ower tubes (

2a3

) has lost its

Switch off the amplifier. Wait until the

If your amplifier does not work as it is supposed to, it is fairly easy to diagnose and remedy
some of the common malfunctions, by following procedures as outlined in this following.

THE PROBLEM PROBABLE REASON THE SOLUTION

position, the amplifier does not switch on.

distorted. A hum or pops have appeared

and are coming from one of the channels.

tubes in the sockets

nominal working parameters

nominal working parameters

(3,15A T), within the fuse holder as

depicted with index 4 on page 8 of this

user’s manual.

are properly inserted into the electrical

mains socket and to the socket as depicted

with index 5 on page 8 of this user’s

manual.

vacuum tubes cool down. Check for proper

placement of vacuum tubes in their

sockets. If necessary – correct their

orientation.

vacuum tubes cool down. Exchange the

positions of the driver tubes between
channels. Turn on the amplifier. If the

disturbing sounds have moved to the other

channel, inform Your local Fezz Audio

dealer about tube which need to be

replaced.

vacuum tubes cool down. Exchange the

positions of the power tubes between

channels. Turn on the amplifier. If the

disturbing sounds have moved to the other

channel, inform Your local Fezz Audio

dealer about tube which need to be

replaced..

If You have verified the aforementioned situations, and your problem still persists, please
contact Your local Fezz Audio dealer.

TECHNICAL DATA__________________________________________

Type: Stereo power amplifier
Model: Mira Ceti 2a3
Output power: 2x3W
Circuit architecture: single-ended , class A
Output impedance: 4Ω/8Ω
Inputs : 3xRCA
Harmonic distortion THD: <0,25%
Frequency response: 20Hz-56kHz (-3dB)
Power consumption: 90W
AC fuse: 3,15T
Net Weight: 14kg
Dimensions (width x depth x height): 340x360x215mm
Tubes: 2x 2a3, 2x 6sn7

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Declaration of Conformity

Toroidy.pl Transformatory L.

ul. Mazowiecka 20

001 Księżyno

Fezz Audio Vacuum tube amplifier

complies with the following European Union Council

electromagnetic compatibility

This declaration of conformity is the result of an examination carried out

60065:2002+A2:2010+A12

rticle 10 of the EMC Directive.

(owner of Fezz Audio

Directives and Standards relating to

low voltage Directive

Lech Lachowski

Manufacturer:

Address:

16-

POLAND

I declare that the product:

Brand:

Model: Mira Ceti 2a3

(2014/35/EU).

European Standards for EN
laid down in a

Lachowski Sp.k.

(EMC Directive 2014/30/EU) and the

:2011+A11:2008

brand)

in accordance with

for low voltage, as

Księżyno 01.03.2019

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