HTA-25B
HYBRID INTEGRATED AMPLIFIER
VU M ET E R
Instruction Manual
Introduction
Thank you for purchasing this TAGA Harmony amplier.
TAGA Harmony hybrid amplier is a combination of two dierent techniques to create
an amplier in one device: the World of tubes and the World of transistors.
TAGA Harmony HTA-25B is a 25W / 4ohm high-delity but still aordable hybrid
integrated amplier utilizing two 6P1 and two 6N1 tubes in the preamp section and
transistors at the output. This solution ensures a very warm, linear and lifelike sound
with high dynamic presentation at the same time.
The high class, gold-plated speaker terminals oer almost lossless audio signal
transmission to the speakers.
The HTA-25B oers a variety of dierent connections both wired and wireless:
• 2 analog inputs with gold-plated sockets.
• USB input to quickly and easily play music from USB ash drivers (supports MP3 /
WMA / WAV and APE les).
• Bluetooth® - to wirelessly stream music from smartphones, tablets or computers.
• REC output for external recording device or powered speakers or subwoofer.
• Headphones output for those who prefer discrete listening.
The removable IEC power cable gives an option to upgrade your system with a
premium audiophile power cable in any time.
The HTA-25B combines the analog sound of tubes with the power of transistors to give
the best sound at the price!
Cleaning
Do not use strong or abrasive cleaners. Use a dry, soft cloth for cleaning.
Specications
Full technical specications are available on the www.taga-audio.com website.
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Contents
Safety Instructions 4
Important Safety Instructions 5
Front and Rear Panel 6
Hooking up speaker cables 7
Hooking up the amplier 7
Operation 9
Additional Information 11
Specications 13
3
Safety Instructions
IMPORTANT
READ THIS SECTION CAREFULLY BEFORE PROCEEDING!
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS PRODUCT TO
RAIN OR MOISTURE. DO NOT REMOVE CHASSIS (OR BACK). NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
The triangle containing a lightning symbol is intended to alert the user to the presence
of uninsulated dangerous voltages within the product’s enclosure that may be of
sucient magnitude to constitute a risk of electric shock to persons.
An exclamation mark in a triangle is intended to alert the user to the presence
of important operating and maintenance (servicing) instructions in the literature
accompanying the appliance.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
EXPOSE THIS APPARATUS TO RAIN OR MOISTURE, AND OBJECTS FILLED WITH
LIQUIDS, SUCH AS VASES, SHOULD NOT BE PLACED ON THIS APPARATUS.
CAUTION: TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO
WIDE SLOT, FULLY INSERT.
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE
THE FUSE ONLY WITH THE SAME AMPERAGE AND VOLTAGE TYPE. REFER
REPLACEMENT TO QUALIFIED SERVICE PERSONNEL.
WARNING: UNIT MAY BECOME HOT. ALWAYS PROVIDE ADEQUATE
VENTILATION TO ALLOW FOR COOLING. DO NOT PLACE NEAR A HEAT
SOURCE, OR IN SPACES THAT CAN RESTRICT VENTILATION.
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Important Safety Instructions
1. Read Instructions – All the safety and operating instructions should be read before the product is operated.
2. Retain Instructions – The safety and operating instructions should be retained for future reference.
3. Heed Warnings – All warnings on the product and in
the operating instructions should be adhered to.
4. Follow Instructions – All operating and use instructions
should be followed.
5. Cleaning - Unplug this product from the wall outlet
before cleaning. Do not use liquid cleaners or aerosol
cleaners. Use a damp, soft cloth for cleaning.
6. Water and Moisture - Do not use this product near
water - for example, near a bath tub, wash bowl,
kitchen sing or laundry tub; in a wet basement; or near
a swimming pool; and the like.
7. Accessories - Do not place this product on an unstable
cart, stand, tripod, bracket or table. The product may
fall, causing serious injury to a child or adult, and
serious damage to the product. Use only with a cart,
stand, tripod, bracket or table recommended by the
manufacture, or sold with the product. Any mounting
of the product should follow manufacture’s instructions
and should use a mounting accessory recommended
by the manufacture.
8. Ventilation - Slots and openings in the cabinet are
provided for ventilation and to ensure reliable operation
of the product and to protect it from overheating, and
these openings must not be blocked or covered. The
openings should never be blocked by placing the product on a bed, sofa, rug, or other smimilar surface. This
product should not be placed in a built-in installation
such as a bookcase or rack unless proper ventilation is
provided or the manufacture’s instructions have been
adhered to.
9. Power Sources - This product should be operated only
from the type of power source indicated on the marking
label. If you are not sure of the type of power supply
to your home, consult your product dealer or local
power company. For products intended to operate from
battery power, or other sources, refer to the operating
instructions.
10. Grounding and Polarization - This product may be
equipped with a polarized alternating-current line plug
(a plug having one blade wider than the other). This
plug will t into the power outlet only one way. This is
safety feature. If you are unable to insert the plug fully
into the outlet, try reversing the plug. If the plug should
still fail to t, contact your electrician to replace your
obsolete outlet. Do not defeat the safety purpose of the
polarized plug.
11. Power-Cord Protection - Power supply cords should
be routed so that they are not likely to be walked on or
pinched by items placed upon or against them, paying
particular attention to cords at plugs, convenience
receptacles, and the point where they exit from the
product.
12. Lightning - For added protection for this product
during a lightning storm, or when it is left unattended
and unused for long periods of time, unplug it from
the wall outlet and disconnect the antenna or cable
systems. This will prevent damage to the product due
to lightning and power-line surges.
13. Overloading - Do not overload wall outlets, extensions
cords, or integral convenience receptacles as this cas
result in a risk of re or electric shock.
14. Object and Liquid Entry - Never push objects of any
kind into this product through openings as they may
touch dangerous voltage points or short-out parts that
could result in a re or electric shock. Do not expose
this apparatus to dripping or splashing, and ensure that
no objects lled with water, such as vases, are placed
on the apparatus.
15. Servicing - Do not attempt to service this product
yourself as opening or removing covers may expose
you to dangerous voltage or other hazards. Refer all
servicing to qualied service personnel.
16. Damage Requiring Service - Unplug this product from
wall outlet and refer servicing to qualied personnel
under the following conditions:
• When power supply cord or plug is damaged;
• If liquid has been spilled, or objects have fallen into
product;
• If the product does not operate normally by following
the operating instructions. Adjust only those controls
that are covered by the operating instructions as an
improper adjustment of other controls may result in
damage and will require extensive work by a quali-
ed technician to restore the product to its normal
operation;
• If the product has been dropped or damaged in any
way;
• If the product exhibits a distinct change in
performance - this indicates a need for service.
17. Replacement Parts - When replacement parts are
required, be sure the technician has used replacement
parts specied by the manufacturer or have the same
characteristics as the original part. Unauthorized
subsitutions may result in re, electric shock, or other
hazards.
18. Safety Check - Upon completion of any service or
repairs to this product, ask the service technician to
perform safety checks to determine that the product is
in proper operating condition.
19. Wall or Ceiling Mounting - The product should be
mounted to a wall or ceiling only as recommended by
the manufacturer.
20. Heat - The product should be situated away from heat
sources such as radiators, heat registers, stoves, or
other products (including ampliers) that produce heat.
21. [Refers to products equipped with vacuum tubes]
Tube Cage - For your safety and to protect the vacuum
tubes this product may be equipped with the factory
installed vacuum tube cage.
It is not recommended to remove the cage unless it is
required to change the vacuum tubes.
When the cage is removed - do not touch the vacuum
tubes - they may be hot and burn the skin!
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Front and Rear Panel
Front Panel:
1. Power Switch (ON and OFF) and Power Status Indicator (around the Power
Switch)
2. USB Stick Input
3. Headphone ¼” Jack Output
4. USB and Bluetooth Knob (Play/Pause, Next/Previous)
5. Input Selector (USB, CD, Bluetooth, AUX)
6. USB/Bluetooth Input Status Led Indicator
7. VU Meter
8. Treble Regulator
9. Bass Regular
10. Volume Regulator
Rear Panel:
11. CD Stereo RCA Input
12. AUX Stereo RCA Input
13. REC Output
14. Speaker Right Channel Output (Speaker Connectors)
15. Speaker Left Channel Output (Speaker Connectors)
16. Power Cable Input and Fuse Box
Note! A blown fuse should be only exchanged for exactly the same type as
indicated on the rear amplier panel. The Power Cable should be disconnected!
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Hooking Up Speaker Cables
The Speaker Connectors can accommodate up to 10AWG speaker cables as well
as most of popular plugs (banana etc.). A 10AWG cable is recommended for longer
connections (longer than 20 meters / 66 feet). For shorter lengths you can use 12/14
or 18 AWG cables. It is recommended to leave about 150 cm (5 feet) of extra cable
at the amplier end to facilitate positioning and installation of the amplier. Do not use
staples, nails or other metal objects to secure the cables. You will get the best sound
quality and least amount of hum by keeping the cables away from other electrical wires
and cables.
Pay attention to connecting the polarity of the amplier correctly with the speakers
in each speaker group (speakers should be connected RED + with RED + amplier
connector, BLACK – with BLACK – amplier connector).
Before connecting make sure that your amplier is turned o.
Please refer to your speaker instruction manual for more information.
Hooking up the Amplier
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Hooking up the Amplier
1. Make sure the amplier is turned o (the Power Switch is in the top position
and the Power Cable is removed).
2. Turn the Volume Regulator to MIN (max counter clockwise).
3. Using speaker cables (not supplied with this product) connect your speakers to
SPEAKERS OUT connectors located on the rear of the amplier(check “Hooking
Up Speaker Cables” for more details).
4. If you want to play an analog audio source device (CD player, satellite or FM tuner,
video console etc.) : using RCA interconnect cables (not supplied with this product)
connect it to the analog CD or AUX inputs on the rear of the amplier.
5. If you want to play a digital audio les connect a USB stick (no supplied with this
product) to the USB Stick Input on the front of the amplier. Make sure that this
amplier supports the les you want to play.
6. If you want to connect a recording device (Tape or CD recorder etc.) or powered
speakers or subwoofer: using RCA interconnect cables (not supplied with this
product) connect it to the analog REC output on the rear of the amplier.
7. If you want to wirelessly stream music via Bluetooth® make sure to prepare a
compatible source device (smartphone, tablet, computer etc.).
8. Your amplier is ready for operation.
Note! Avoid to short-circuit of cables – it can damage this amplier or speakers.
This may void your warranty.
Note! Only speakers within range of impedance 4 - 8ohm can be connected.
Connecting speakers outside this range can damage this amplier and/or
speakers. This may void your warranty.
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Operation
1. Plug the Power Cable to the amplier and into the electrical outlet.
2. Turn on the amplier – press the Power Switch (the Power Switch should be in the
down position ).
The status LED around the Power Switch should turn orange in a few seconds.
If it does not, it means that the amplier is working under an abnormal condition (a
protection mode) – turn o the power, unplug the Power Cable and check whether
some of the cables are not short circuited.
After xing the cables turn the amplier on.
3. Using the Input Selector knob select which audio source you want to play
(corresponding to the selected input).
4. Turn on your audio source and start playback.
5. Regulate volume on the amplier to adjust the level of sound.
Note! Check “Additional Information” for other useful operating instructions.
Note! High volume levels can damage this amplier and/or speakers. This may
void your warranty.
Play from USB Stick:
This amplier can play music from most USB sticks and supports most MP3 / WMA /
WAV / APE audio les.
1. Using the Input Selector knob select the USB input. If the USB stick is not inserted
then the USB/Bluetooth Input Status Led Indicator will start ashing.
2. Insert the USB stick into the USB Input socket located on the front of the amplier.
3. When compatible music les are detected then the playback will start
automatically.
In the Play mode the USB/Bluetooth Input Status Led Indicator will lit continuously.
4. Press the USB Knob 12 once to pause the playback.
Press it again to resume the playback.
In the Pause mode the USB/Bluetooth Input Status Led Indicator will start ashing.
5. Rotate the USB Knob 8 clockwise to play the next song. If the last song is
detected the playback will start from the rst one on the USB stick (check “Order of
le playback”).
6. Rotate the USB Knob 7 counterclockwise to play the previous song. If the rst
song is detected the playback will start from the last one on the USB stick (check
order of le playback).
Order of le playback:
The music les are always played in accordance with their alphabetical order on the
USB stick and its folders. Usually the playback starts from the les stored directly on
the USB stick (which are not placed in the folders) and then the playback is continued
for the les stored in the folders according to a folder order on the USB stick.
Note! Depending on a USB stick type, format and number or arrangements of folders
and les some music les will be played dierently or will not be recognized by the
amplier.
Note! We recommend to change input to other one before removing the USB stick.
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Operation
Bluetooth® Connection:
1. After the amplier is switched on - the built-in Bluetooth® receiver is waiting to be
paired with a Bluetooth® source.
2. Select BT input by rotating the Input selector knob – the USB/Bluetooth Input
Status Led Indicator will start ashing.
3. Select Bluetooth® on your audio source (smartphone, laptop etc.) and start
scanning for available Bluetooth® devices.
After a short time “HTA-25B” will appear on the screen of your audio source.
4. Select “Pair” on your audio source to connect with the amplier.
5. HTA-25B will now be ready to play your music wirelessly within a range of
approximately 7 meters.
6. Start playback on your audio source.
In the Play mode the USB/Bluetooth Input Status Led Indicator will lit continuously.
7. You can play / pause music or change songs directly in your audio source or via
the USB and Bluetooth Knob on the front panel of the amplier:
- Press the USB and Bluetooth Knob 12 once to pause the playback.
In the Pause mode the USB/Bluetooth Input Status Led Indicator will start
ashing
Press it again to resume the playback.
- Rotate the USB and Bluetooth Knob 8 clockwise to play the next song.
- Rotate the USB and Bluetooth Knob 7 counterclockwise to play the previous
song.
Note: Please refer to your audio source user instruction for details on operating the
Bluetooth®.
Operation and names of specic functions can vary on dierent devices.
Make sure to avoid obstacles between the audio source and the amplier – it can
worsen or interrupt the sound transmission.
Important Notes - Bluetooth® Connection
• As long as the amplier is not switched o for longer than 10 seconds – the current
Bluetooth® connection is active (even if you change the input). After that time the
connection is lost and you will have to repeat the pairing procedure.
• When you move away from the working range of the HTA-25B Bluetooth® receiver
for longer than 60 seconds, the current Bluetooth® connection will be lost and you
will have to repeat pairing procedure. Within 60 seconds the connection can be
automatically reconnected.
• When you want to use another Bluetooth® audio source than currently active,
you have to disconnect the active connection and start the Bluetooth® connection
procedure.
Volume Regulator:
You can adjust the sound volume from minimum (the knob – max counterclockwise)
to maximum (the knob – max clockwise). Distortion and sound quality worsening
may occur when the knob is in the maximum position. It may damage the amplier or
speakers. This may void your warranty.
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Operation
Bass Regulator:
You can adjust bass output of the amplier. The default: the knob is in the
center position : the marker on the knob in the vertical position. Turn the knob
counterclockwise (-) to decrease the amount of low frequencies. Turn the knob
clockwise (+) to increase the amount of low frequencies (+).
Treble Regulator:
You can adjust treble output of the amplier. The default: the knob is in the
center position : the marker on the knob in the vertical position. Turn the knob
counterclockwise (-) to decrease the amount of high frequencies. Turn the knob
clockwise to increase the amount of high frequencies (+).
Input Selector:
You can select one of four available audio inputs (USB, CD, Bluetooth, AUX).
Headphones Connection:
When headphones (not supplied with this product) are plugged to the headphone input
(Headphones) the transmission of sound to the speakers is switched o. The REC
output is still active.
The volume of the headphones is regulated by the Volume Regulator.
All sound regulations (Bass / Treble) will aect the sound transmitted to the
headphones.
Note! Listening at high volume can cause hearing damage.
REC Output:
This output is used to record audio from the amplier on an external device.
The output audio signal level is xed (is not regulated by the Volume Regulator).
VU Meter:
The VU Meter is displaying a representation of the current signal level (it is aected by
Volume / Bass and Treble regulations).
Additional Information
Break-In
Your TAGA Harmony amplier sounds great immediately after it is taken out of the
carton but as all hybrid ampliers, this amplier requires a “break-in” period to reach its
full sonic capabilities.
During the “break-in” period it is recommended to operate the amplier at moderate
volume levels.
The rst level of the “break-in” is reached after approximately 10 hours of play.
The optimal level of the “break-in” is reached after approximately 40 to 60 hours of play.
It is recommended to avoid one-time short periods of operation unless the amplier
reaches the rst “break-in” level. When the amplier is turned on, it should operate for
around 4-6 hours.
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Additional Information
Turn o procedure
Make sure to turn o the amplier rst when powering down your system.
Note! If the amplier was turned o even for a short period of time, you should wait
at least 2 minutes before turning it back on. Do not turn it ON then OFF and then ON
again in quick succession.
Follow this procedure each time you turn your amplier OFF / ON.This precaution will
minimize the stress (high voltages) on internal components.
Tube Cage
For your safety and to protect the vacuum tubes this amplier is equipped with the
vacuum tube cage which is factory installed.
It is not recommended to remove the cage unless it is required to change the vacuum
tubes.
When the cage is removed - do not touch the vacuum tubes - they may be hot and
burn the skin!
To remove the cage:
1. Turn o the amplier.
2. Unplug the Power Cable from the electrical outlet.
3. Wait for approximately 30 minutes to cool down vacuum tubes.
4. Unscrew and remove 2 screws which are located on the rear bottom frame of the
tube cage.
5. Remove the cage by pulling it in upward.
Make sure to reinstall the cage for the regular operation.
Vacuum Tube Replacement
The lifetime of vacuum tubes may vary and depends on their operation time and
ambient temperature, playback volume levels and the number of on and o cycles.
Note! The warranty time for vacuum tubes is shorter than for other components of this
device - for more details check your warranty terms or contact a local dealer.
Replacement vacuum tubes are not supplied with this product.
To replace the vacuum tube:
1. Remove the tube cage – check “Tube Cage” for more details.
2. Make sure that the vacuum tubes are cool.
3. To protect the vacuum tubes during this operation, please put on the cotton gloves
which are supplied with this product.
4. The vacuum tubes are installed in sockets. Remove the vacuum tube you want to
replace by gently pulling it in upward.
5. Make sure to replace the vacuum tube with the same type or with another type
which is a direct equivalent of the factory installed one.
Gently but rmly place the new vacuum tube in the socket.
6. Make sure to reinstall the cage for the regular operation.
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Specications
Power Output: 2 x 18W RMS / 8ohm
Vacuum Tubes: 2 x 6P1, 2 x 6N1
THD: Less or equal 0.5% (1kHz 1W)
Signal/Noise ratio: ≥80dB
Frequency Response: 20Hz – 20kHz
Inputs: Analog: RCA stereo CD, AUX
Outputs: RCA stereo REC
Connectivity Wireless: Bluetooth® v4.0
Headphones: 20mW(32ohm) ; THD 0.5% ;
AC Power, Power Consumption: 220V-240V 50/60Hz, 120 W
Dimensions (H x W x D): 13.8 x 26.4 x 29.8 cm
Weight (net): 4.2 kg / pc.
Bluetooth® is a registered trademark of Bluetooth SIG., Inc
We reserve the right to change the technical data and the design of the product without notice as a result of further development.
2 x 25W RMS / 4ohm
Class A/B
Digital: USB (MP3 / WMA / WAV / APE audio les)
Frequency response : 100Hz – 15kHz (+/-3dB)
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Notes
14
Notes
15
We strongly advise to contact a professional installer or dealer in order to install
TAGA Harmony products.
We recommend using high quality TAGA Harmony speaker cables and other
installation accessories.
Kit Content:
Amplier 1EA
Power Cable 1EA
Cotton Gloves 1PAIR
Instruction Manual 1EA
Your product is marked with the symbol as showed on the left.
For EU (European Union) member users:
This product has been tested and found in compliance with
2014/30/EU (EMC) & 2014/53/EU (R&TTE) & 2014/35/EU (LVD) directives.
Directive, do not dispose of this product as household waste or commercial waste.
Waste electrical and electronic equipement should be appropriately collected and
For information on recycling of this product, please contact your local authorities, your
household waste disposal service or the shop where you purchased the product.
05-816 REGUŁY k/WARSZAWY, POLAND
requirements of the European Community
Your product is marked with the symbol as showed on the left.
According to the WEEE (Waste electrical and electronic equipment)
recycled as required by practices established for your country.
POLPAK POLAND Sp. z o.o.
AL.JEROZOLIMSKIE 333A
Email: sales@taga-audio.com
IMPORTANT!
For EU (European Union) member users:
TAGA EUROPE
www.taga-audio.com
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