Taga Harmony HTA-25B User manual

HTA-25B
HYBRID INTEGRATED AMPLIFIER
Instruction Manual
VU ME TER
Edition 05-2019

2
Introduction
Thank you for purchasing this TAGA Harmony amplier.
TAGA Harmony hybrid amplier is a combination of two di󰀨erent techniques to create
an amplier in one device: the World of tubes and the World of transistors.
TAGA Harmony HTA-25B is a 25W / 4ohm high-delity but still a󰀨ordable hybrid
integrated amplier 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 o󰀨er almost lossless audio signal
transmission to the speakers.
The HTA-25B o󰀨ers a variety of di󰀨erent 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.
Specications
Full technical specications are available on the www.tagaharmony.com website.

3
Contents
Safety Instructions 4
Important Safety Instructions 5
Front and Rear Panel 6
Hooking up speaker cables 7
Hooking up the amplier 7
Operation 9
Additional Information 11
Specications 13

44
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.
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.
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.
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
su󰀩cient magnitude to constitute a risk of electric shock to persons.

5
Important Safety Instructions
5

6
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

7
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 amplier end to facilitate positioning and installation of the amplier. 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 amplier correctly with the speakers
in each speaker group (speakers should be connected RED + with RED + amplier
connector, BLACK – with BLACK – amplier connector).
Before connecting make sure that your amplier is turned o󰀨.
Please refer to your speaker instruction manual for more information.
Hooking up the Amplier
Smartphone, tablet, etc.
USB stick

8
Hooking up the Amplier
1. Make sure the amplier 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 amplier(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 amplier.
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 amplier. Make sure that this
amplier 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 amplier.
7. If you want to wirelessly stream music via Bluetooth® make sure to prepare a
compatible source device (smartphone, tablet, computer etc.).
8. Your amplier is ready for operation.
Note! Avoid to short-circuit of cables – it can damage this amplier 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 amplier and/or
speakers. This may void your warranty.
Right speaker Left speaker
CD Player, etc. FM/AM tuner, etc. TAPE,
CD Recorder, etc.
Interconnect RCA Speaker cables

9
Operation
1. Plug the Power Cable to the amplier and into the electrical outlet.
2. Turn on the amplier – 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 amplier 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 amplier 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 amplier to adjust the level of sound.
Note! Check “Additional Information” for other useful operating instructions.
Note! High volume levels can damage this amplier and/or speakers. This may
void your warranty.
Play from USB Stick:
This amplier 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 amplier.
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 be illuminated
continuously.
4. Press the USB Knob ►I
I
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 ►►
I
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
I
◄◄ 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 di󰀨erently or will not be recognized by the
amplier.
Note! We recommend to change input to other one before removing the USB stick.

10
Operation
Bluetooth® Connection:
1. After the amplier 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 amplier. After connection
is successful the USB/Bluetooth Input Status Led Indicator will be illuminated
continuously and it will remain illuminated as long as the current connection is
active.
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.
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 amplier:
- Press the USB and Bluetooth Knob ►
II
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 ►►
I
clockwise to play the next song.
- Rotate the USB and Bluetooth Knob
I
◄ ◄ 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 specic functions can vary on di󰀨erent devices.
Make sure to avoid obstacles between the audio source and the amplier – it can
worsen or interrupt the sound transmission.
Important Notes - Bluetooth® Connection
• As long as the amplier 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 amplier or

11
speakers. This may void your warranty.
Bass Regulator:
You can adjust bass output of the amplier. 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 amplier. 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 a󰀨ect 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 amplier 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 a󰀨ected by
Volume / Bass and Treble regulations).
Operation
Additional Information
Break-In
Your TAGA Harmony amplier sounds great immediately after it is taken out of the
carton but as all hybrid ampliers, this amplier requires a “break-in” period to reach its
full sonic capabilities.
During the “break-in” period it is recommended to operate the amplier 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 amplier
reaches the rst “break-in” level. When the amplier is turned on, it should operate for
around 4-6 hours.

12
Additional Information
Turn o󰀨 procedure
Make sure to turn o󰀨 the amplier rst when powering down your system.
Note! If the amplier 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 amplier 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 amplier 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 amplier.
2. Unplug the Power Cable from the electrical outlet.
3. Wait for approximately 30 minutes to cool down vacuum tubes.
4. 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.

13
Power Output: 2 x 18W RMS / 8ohm
2 x 25W RMS / 4ohm
Class A/B
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
Digital: USB (MP3 / WMA / WAV / APE audio les)
Outputs: RCA stereo REC
Connectivity Wireless: Bluetooth® v4.0
Headphones: 20mW(32ohm) ; THD 0.5% ;
Frequency response : 100Hz – 15kHz (+/-3dB)
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.
Specications

14
Notes

15
Notes

www.TagaHarmony.com
We strongly advise to contact a professional installer or dealer in order to install
TAGA Harmony products.
We recommend using high quality TAGA Harmony cables and other installation
accessories.
TAGA EUROPE
POLPAK POLAND Sp. z o.o.
AL.JEROZOLIMSKIE 333A
05-816 REGUŁY k/WARSZAWY, POLAND
Email: [e-mail]
IMPORTANT!
Your product is marked with the symbol as showed on the left.
For EU (European Union) member users:
According to the WEEE (Waste electrical and electronic equipment)
Directive, do not dispose of this product as household waste or commercial waste.
Waste electrical and electronic equipement should be appropriately collected and
recycled as required by practices established for your country.
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.
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
requirements of the European Community
2014/30/EU (EMC) & 2014/53/EU (R&TTE) & 2014/35/EU (LVD) directives.
Kit Content:
Amplier 1EA
Power Cable 1EA
Cotton Gloves 1PAIR
Instruction Manual 1EA