Kruger Matz A80-PRO Tube Amplifier Instruction Manual

: June 16, 2024
: Kruger Matz

Table of Contents

Kruger Matz A80-PRO Tube Amplifier
Product Information
Product Usage
SAFETY INFORMATION
PRODUCT DESCRIPTION
REMOTE CONTROL BATTERY INSTALLATION
CONNECTING SPEAKERS
OPERATION
BLUETOOTH MODE
CONNECTING TO THE PC
TROUBLESHOOTING
SPECIFICATION
Documents / Resources
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)

Kruger Matz A80-PRO Tube Amplifier

Kruger-Matz-A80-PRO-Tube-Amplifier-PRODUCT

Product Information

Specifications

Model: KM0571
Power Supply: DC 18-32V
Inputs: Audio In, Bluetooth (BT), RCA, Coaxial, Optical, PC USB
Output: AUX, Speaker
Display: Yes

Product Description

The tube amplifier KM0571 is a high-quality audio amplifier designed for use with speakers.
It features various input options including audio in, Bluetooth, RCA, coaxial, optical, and PC-USB.
The amplifier also has an AUX output and a speaker output.

Front panel

Display: Shows the current settings and status of the amplifier.
ON/OFF/Source Selection Button: Turns the amplifier on or off and allows you to switch between different input sources.
IR Sensor: Receives signals from the remote control.

Back panel

Multifunctional Knob: Allows you to adjust the volume, mute the sound, and adjust the bass and treble levels.
VU Meter: Displays the audio signal level.
Bluetooth Antenna Socket: Connects the Bluetooth antenna for wireless audio streaming.
RCA Input: Accepts analog audio signals from devices with RCA outputs.
Coaxial Input: Accepts digital audio signals through a coaxial connection.
Optical Input: Accepts digital audio signals through an optical connection.
USB-B Port: Allows connection with a PC for audio playback.
AUX Output: Provides an output for connecting external devices with a 3.5mm jack.
Speaker Output: Connects to speakers for audio output.
Power Socket : Connects the power supply.

Product Usage

Connecting the Speakers

Locate the speaker output terminals on the back panel of the amplifier.
Connect the positive (+) terminal of each speaker to the corresponding positive (+) terminal on the amplifier.
Connect the negative (-) terminal of each speaker to the corresponding negative (-) terminal on the amplifier.

Operating the Amplifier

Ensure that the amplifier is connected to a power source and the speakers are properly connected.
Turn on the amplifier using the ON/OFF button on the front panel or the remote control.
Select the desired input source using the source selection button on the front panel or the remote control.
Adjust the volume using the multifunctional knob or the volume buttons on the remote control.
You can also adjust the bass and treble levels using the multifunctional knob or the bass and treble buttons on the remote control.

Bluetooth Mode

Ensure that Bluetooth is enabled on your device.
Press the Bluetooth button on the front panel or the remote control to enter Bluetooth mode.
On your device, search for available Bluetooth devices and select “KM0571” to pair with the amplifier.
Once the pairing is successful, the BT symbol on the display will light up.

Connecting to a PC

Connect one end of a USB-B cable to the USB-B port on the back panel of the amplifier.
Connect the other end of the USB-B cable to a USB port on your PC.
On your PC, look for the speaker icon in the bottom right corner of the taskbar.
Select the speaker icon and choose “KM0571” as the default audio output device.

Frequently Asked Questions (FAQ)

Q: The sound is distorted. What should I do?

A: If the sound is distorted, try the following:

Check the volume level and reduce it if necessary.
Make sure that the input source is not distorted or of poor quality.
Check the speaker connections and ensure that they are secure.

SAFETY INFORMATION

The producer does not claim liability for inappropriate use and handling.

Protect the product from water and humidity.
This product, in combination with speakers, may be capable of producing sound levels that could cause permanent hearing loss. Do not operate for a long period at a high volume level or at an uncomfortable level. If you experience any hearing loss or ringing in the ears, seek medical advice.
Make sure the product is positioned in a place with proper ventilation. The product should be located away from heat sources such as radiators, heat vents, or other devices that produce heat.
The product should be connected to a power supply only of the type described in the operating instructions or as marked on the product.
This appliance may be used by children who are above 8 years old and by persons with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge if they are supervised and guided by a person who is responsible for their safety in a cautious manner, and all the safety precautions are understood and followed. Children should not play with this device. Children should not perform cleaning and servicing of the device unsupervised.
Never use this device if the power supply cord is damaged.
When you disconnect the power cord of the device, grasp and pull the plug, not the cord/cable.
Keep the device and its cord/cable away from heat, water, moisture, sharp edges, and any other factor that may damage the appliance or its cord.
Disconnect the device from the power supply if it is not going to be used for a long time.
Keep the remote control battery away from children. Dispose of the used battery promptly, replace only with a battery of the correct type.
ALWAYS disconnect this device from the power supply mains before cleaning. Clean it with a soft, slightly damp cloth only. Do not use any chemical agents to clean the product.
Make sure to place this product on ﬂat, dry, and stable surface.
The power supply cables 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 cables at plugs and the point where they exit from the product.
Do not use unauthorized accessories as they may damage the unit.
Unplug this product from the wall outlet and refer servicing to qualiﬁed service personnel under the following conditions:
- If the unit exhibits sudden unusual operation
- If the product has been exposed to rain or water.
- If the product has been dropped or damaged in any way.
Do not attempt to service this product yourself as removing the cover may expose you to dangerous voltages or other hazards. Refer all servicing to ualiﬁed service personnel.
Do not disassemble the device, as it may cause a risk of electric shock. The product has no user-serviceable parts inside.
For added protection for this product during a thunderstorm, or when it is left unattended and unused for a long period, unplug it from the wall outlet.
NOTES ON USE:
- Avoid high temperatures.
- Allow for sufficient heat dispersion when installed on a rack.
- Handle the power cord carefully.
- Hold the plug when unplugging the cord.
- Keep the set free from moisture, water, and dust.
- Unplug the power cord when not using the set for long periods.
- Do not obstruct the ventilation holes.
- Never disassemble or modify the set in any way.

PRODUCT DESCRIPTION

Front panel

Display
ON/OFF/ source selection button
IR sensor
Multifunctional knob (volume adjustment, mute, bass, and treble adjustment)
VU meter
Bluetooth antenna socket
RCA input
Coaxial input
Optical input
USB-B port (connection with the PC)
AUX output (3,5 mm jack)
Speaker output
Power socket

Display

Sampling rate
Volume
Source
Bass/treble adjustment mode

Remote control

ON/OFF
Select source
Mute
Bass up
Treble down
Treble up
No function
Bass down
No function
Decrease volume
Increase volume
Display backlight (50%, 100%, OFF)

REMOTE CONTROL BATTERY INSTALLATION

Open the battery cover.
Insert 2x AAA battery with correct polarization (+/-).
Close the battery cover.

Notes:

Please remove the batteries if the remote control is not going to be used for a long time.
Use only specified batteries.
Do not mix different types of batteries.
Always replace all batteries at the same time.
Always point the IR sensor of the remote control towards the IR sensor on the front of the main unit.
Make sure there are no obstacles between the IR sensor of the remote control and the main unit.

CONNECTING SPEAKERS

Plug the banana plugs into the corresponding colors on the speaker and at the back of the main unit.

OR

Slightly unscrew the nuts on the sockets at the back of the main unit.
Insert the stripped part of the wire completely. The right speaker cables should be connected to the “R” socket, and the left speaker cables to the “L” socket, making sure that the cables connected to the central unit are connected to the speakers in the same way (red socket on the central unit to the red socket on the loudspeaker, black in the same way as red).
Tighten the socket nuts firmly so that the inserted wires do not fall out.

OPERATION

Install the electronic tubes delivered with the product into the appropriate sockets on the top of the amplifier (the tubes are not divided into left and right). Before installing the tubes, check whether the pins are deformed.
Make sure the multifunctional knob is set to the minimum.
Connect the speakers as described in the “Connecting speakers” section above.
Use the appropriate cables and connect the audio source device to the corresponding interface at the back of the amplifier.
Connect the plug of the AC/DC adapter to the power socket at the back of the main unit and then connect the amplifier to the wall outlet.
Press the ON/OFF button on the amplifier or remote control to turn on the amplifier.
Keep pressing the source selection button on the amplifier or remote control to select the desired source.
- The corresponding indicator will light up on the display.
Use the multifunctional knob to set the desired volume.
Press the multifunctional knob twice to enter bass settings (the BASS icon appears on the display), then use the same knob to adjust.
- Press twice again to enter treble settings (the TRE icon appears on the display), then use the same knob to adjust.
- Press the knob again twice to exit settings. You can also use the remote control to adjust bass and treble.
Press the multifunctional knob once to mute the sound.
To turn off the amplifier, press and hold the ON/OFF button.

BLUETOOTH MODE

Screw the Bluetooth antenna to the antenna socket at the back of the main unit.
Press the source selection button on the main unit or remote control and switch to Bluetooth pairing mode. BT icon flashes on the display.
Turn on the Bluetooth function on your device.
Select and connect with the device (BT HIFI AUDIO).
After successful pairing, the BT icon turns solid.

Notes:

Every time the amplifier is turned on, it will connect to the last connected device automatically. Please note, that your device must be on with the Bluetooth function turned on.
The operational range between this unit and a Bluetooth device is approximately 10 m (when the Bluetooth antenna is connected). Any obstacle between this unit and a Bluetooth device can reduce the operational range.
If the distance between the devices exceeds the communication range, the devices will disconnect. To reconnect the devices, place them within range.
Compatibility with all Bluetooth devices is not guaranteed.
Keep this unit away from any other electronic device that may cause interference.

CONNECTING TO THE PC

Connect the amplifier to the PC with the included USB cable.
Press the source selection button to switch to the PC USB mode (the PC-USB icon appears on the display).
For Windows 7/ 8/ Linux it is necessary to install drives from the included pendrive. Please select the “setup.exe” file and follow the instructions to finish the installation process.
For Windows 10 and Mac drivers install automatically after connecting the amplifier to the PC (Plug&Play).
Find the icon with the speaker symbol in the bottom right corner of the taskbar.
Click on that icon, select the device (USB HIFI AUDIO), and set it as default.

TROUBLESHOOTING

Problem	Possible Solution
All cables are connected, but there is no solution sound	1. Check if the

device is on.

2. Check if the volume knob is set to the minimum; if so, then rotate it clockwise to increase the volume

3. Check if the playback on the audio source device is paused, muted, or at the

minimum volume level.

Sound is distorted| 1. If the power of the speakers differs significantly from the power of the amplifier, sound distortions may occur

2. If the volume on the amplifier and the audio source device is set to the maximum, sound distortions may occur. Please decrease the volume on

one of the devices.

The volume level varies depending on the connected equipment| The amplitude of the electrical signal varies from device to device.

Differences in sound levels are normal.

SPECIFICATION

Tube type used: JAN5725
Replaceable tubes: 6*1n, 6K4, EF95
Max. output power: 2x 100 W (@4 Ohm)
Speaker impedance: 4 – 8 Ohm
Frequency response: 20 Hz ~ 20 kHz (± 1,5 dB)
S/N ratio: ≥ 102 dB
THD: 0,03% (@1 W)
Input sensitivity: 1,4 V
Coaxial/optical sampling rate: 192 kHz/24 bit
USB sampling rate: 192 kHz/24-bit
Treble and bass adjustment range: ± 9 dB
Bluetooth: 5.1
Bluetooth range: up to 15 m
Max. Bluetooth transmission power: 10 dBm
Bluetooth frequency: 2402 – 2480 MHz

Audio inputs:

RCA input
Coaxial input
Optical input
USB-B port
Speaker output
AUX output (3,5 mm jack)
Bluetooth antenna socket
DCpower socket(DCplug: 5,5 x 2,5 mm)
Supported OS: Windows 7/ 8/ 10/ MAC/ Linux
Remote control power supply: 2x AAA battery (not included)
Max. power consumption: 200 W
Power supply: 18 – 32 V
AC adapter:
Input: 100 – 240 V; 50/60 Hz
Output: 32 V / 5 A
Weight: 632 g
Dimensions: 128 x 115 x 85 mm
In set: 2x tube, remote control, Bluetooth antenna, USB cable, AC/DC adapter
Lechpol Electronics Leszek Sp.k. hereby declares that the Tube amplifier KM0571 is consistent with directive 2014/53/UE.
The full text of the EU Declaration of Conformity is available at the following Internet address: www.lechpol.pl.

Correct Disposal of This Product (Waste Electrical & Electronic Equipment)

(Applicable in the European Union and other European countries with separate collection systems) This marking shown on the product or its literature indicates that it should not be disposed of with other household wastes at the end of its working life. To prevent possible harm to the environment or human health from uncontrolled waste disposal, please separate this from other types of waste and recycle it responsibly to promote the sustainable reuse of material resources.
Household users should contact either the retailer where they purchased this product, or their local government office, for details of where and how they can take this item for environmentally safe recycling.
Business users should contact their supplier and check the terms and conditions of the purchase contract.
This product should not be mixed with other commercial wastes for disposal.
Made in China for Lechpol Electronics Leszek Sp.k., ul. Garwolińska 1, 08-400 Miętne.
www.krugermatz.com