KARCHER RR 510 Radio CD Player FM CD User Manual

: June 5, 2024
: Karcher

Table of Contents

Safety Information
Information on Electrical and Electronic (Waste) Equipment
Further Notes on the Device
Location of Controls
Power Supply
LCD Display
Radio
Cassette Playback
CD Playback
USB Playback
Stereo Headphone Connector
Technical Specifications
Documents / Resources

RR 510 Radio CD Player FM CD
User Manual

KARCHER RR 510 Radio CD Player FM CD

Safety Information

Read Instructions – All the safety and operating instructions should be read before the appliance is operated.
Retain Instructions – The safety and operating instructions should be retained for future reference.
Heed Warnings – All warnings on the appliance and in the operating instructions should be adhered to.
Water and Moisture – Do not use the apparatus near water (e.g. bathtub, sink, swimming pool) or in wet places or tropical climates. Do not place objects filled with liquids, such as vases, on top of the apparatus. Do not expose the apparatus to dripping or splashing.
Setup – The apparatus should only be placed on a stable, flat surface. Do not let the apparatus fall down or expose it to shock.
Ventilation – The appliance should be situated so that its location or position does not interfere with its proper ventilation. For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings; or, placed in a built-in installation, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings. Ensure a minimum distance of 5 cm around the apparatus for sufficient ventilation. Ensure that the ventilation is not impeded by covering the ventilation openings with items such as newspapers, tablecloths, curtains, etc.
Heat – The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances (including amplifiers) that produce heat.
Power Sources – The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance.
Cables and Plugs – The mains plug shall remain readily operable. All 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 cords at plugs, convenience receptacles, and the point where they exit from the appliance.
Cleaning – The appliance should be cleaned only as recommended by the manufacturer. Clean by wiping with a dry and clean cloth. Do not use chemical cleaners or detergents. Always pull the mains plug before cleaning the unit.
Non-use Periods – The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time.
Object and Liquid Entry – Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.
Damage Requiring Service – The appliance should be serviced by qualified service personnel when:
a) The power-supply cord or the plug has been damaged; or
b) Objects have fallen, or liquid has been spilled into the appliance; or
c) The appliance has been exposed to rain; or
d) The appliance does not appear to operate normally or exhibits a marked change in performance; or
e) The appliance has been dropped, or the enclosure damaged.
Servicing – The user should not attempt to service the appliance beyond that described in the operating instructions. All other servicing should be referred to qualified service personnel.
Open Fire – Keep the apparatus away from open fires. Do not place naked flame sources, such as lighted candles on the apparatus.
Thunderstorms – During a thunderstorm, the mains plug should be unplugged.
Safety Check – After servicing the technician should conduct a safety check in order to ensure that the apparatus is working properly and safely.
Batteries – Always place batteries in the correct polarization into electrical components. Do not mix old and new batteries. Take attention to the environmental aspects of battery disposal. Batteries shall not be exposed to excessive heat such as sunshine, fire, or the like. Remove batteries before disposing of the product.
CAUTION: Risk of explosion if the battery is replaced by an incorrect type.
Volume Levels – To prevent possible hearing damage, do not listen to high volume levels for long periods.
Headphones – Excessive sound pressure from earphones and headphones can cause hearing loss.

WARNING: To reduce the risk of fire or electric shock, do not expose this appliance to dripping or splashing.

WARNING: To reduce the risk of electric shock, do not remove the cover (or back).
No user-serviceable parts inside. Refer servicing to qualified service personnel.

The lightning flash with an arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

CLASS 1 LASER PRODUCT
LASER KLASSE 1
APPAREIL A LASER DE CLASS 1
LUOKAN 1 CLASSMATE
KLASS 1 LASERAPPARAT

DO NOT STARE INTO THE BEAM – INVISIBLE LASER RADIATION

Information on Electrical and Electronic (Waste) Equipment

The following information is intended for private households that use electrical and/or electronic equipment. Please follow these important instructions in the interest of environmentally sound disposal of old appliances as well as your own safety.

Information on the disposal of electrical and electronic (waste) equipment and on the meaning of the symbol in Annex 3 to the ElektroG

According to § 2 Paragraph 1 ElektroG, pedelecs are category 4 devices (large devices) Owners of WEEE must dispose of it separately from unsorted municipal waste. WEEE may therefore not be disposed of as unsorted municipal waste and in particular, does not belong in household waste. Instead, this WEEE must be collected separately and disposed of, for example, via the local collection and return systems.
Owners of WEEE must also separate used batteries and accumulators that are not enclosed in the WEEE, as well as lamps that can be removed from the WEEE without damaging it, from the WEEE before handing them in at a collection point. The latter does not apply if the WEEE is separated from other WEEE in accordance with Article 14 (4) sentence 4 or (5) sentences 2 and 3 within the framework of opting out by public waste management authorities for the purpose of preparing it for re-use.

By means of the symbol according to Annex 3 to the ElektroG, owners can recognize old appliances that are to be collected separately from unsorted municipal waste at the end of their life. The symbol for the separate collection of electrical and electronic equipment represents a crossed-out wheeled bin and is designed as shown opposite.

Free take-back of WEEE by distributors
Distributors (any natural or legal person or partnership offering or making available on the market EEE) with a sales area for EEE of at least 400 m² (in the case of distribution using means of distance communication, instead of with storage and dispatch areas for EEE of at least 400 m²) and distributors of foodstuffs with a total sales area of at least 800 m², who offer and make available on the market electrical and electronic equipment several times in a calendar year or on a permanent basis (in the case of distribution using means of distance communication instead of total storage and dispatch areas of at least 800 m²), are obliged towards end-users to take back WEEE free of charge as follows:

a) Return/collection in the case of purchase of a new appliance and delivery to a private household.
When concluding a purchase contract for a new electrical or electronic appliance, the distributor is obliged to take back free of charge an old appliance of the same type that fulfills essentially the same functions as the new appliance.
If the place of delivery is a private household, the take-back shall be effected by a free collection. For this purpose, an old appliance of the same type with essentially the same functions can be handed over to the delivering transport company when the new appliance is delivered.
If the new appliance is sold exclusively by means of distance communication (Section 312c (2) of the German Civil Code), the following shall apply restrictively:

The free collection of an old appliance of the same type and function shall only take place if it is an appliance of category 1 (heat exchangers), 2 (screens, monitors, appliances with screens with a surface area of more than 100 cm²) and/or 4 (large appliances where at least one of the external dimensions is more than 50 cm).
If instead, it is an old appliance of category 3, 5, and/or 6, the free collection does not take place, and instead the following letter b) applies to the free return.

b) Return in the case of purchase of a new appliance and return elsewhere/return of small appliances When concluding a purchase contract for a new electrical appliance which is not delivered to a private household and when selling a new appliance of categories 3, 5, and/or 6 exclusively by means of distance communication (Section 312c (2) of the German Civil Code (BGB)) with delivery to a private

household, there is the possibility to return an old appliance of the same type of appliance which essentially fulfills the same functions as the new appliance to the distributor free of charge.
The same possibility exists independently of the purchase of a new electrical or electronic appliance also for old appliances which are no larger than 25 cm in any external dimension. In this case, the possibility of a return by the end-user to the distributor is limited to 3 old appliances per type of appliance.
In the case of sales exclusively by means of distance communication (§ 312c para. 2 BGB), the following may be returned under the above-mentioned conditions

of old appliances of categories 3, 5, and/or 6
of old appliances which are no larger than 25 cm in any external dimension,

by suitable return facilities at a reasonable distance from the respective end user.
Otherwise, the equipment shall be returned to the place of collection or in the immediate vicinity thereof.
Distributors must have set up appropriate return facilities for this purpose.

Information on the possibilities of returning old appliances
We provide information on the return options we have set up for old electrical appliances at HTTP:// www.karcher- products.de/index.php/Entsorgungshinweise.html.

Owners of old appliances can hand them in at the facilities set up and available by public waste management authorities for the return or collection of old appliances to ensure proper disposal of the old appliances. If necessary, it is also possible to hand in electrical and electronic equipment there for the purpose of reusing the equipment. You will receive more detailed information from the respective collection or take-back point.

Note on data protection
Some of the old appliances to be disposed of containing sensitive personal data (e.g. on a PC or a smartphone) which must not fall into the hands of third parties.
We expressly point out that it is the end users’ responsibility to delete personal data from the old equipment to be disposed of.

Note on our WEEE registration number
We are registered with the Stiftung Elektro-Altgeräte Register, Nordostpark 72 in 90411 Nuremberg,
Germany, as a manufacturer of electrical and/or electronic equipment under the following registration number (WEEE-Reg.-No. DE): 25822316

Batteries
Batteries must not be disposed of in regular household trash. Every consumer has the obligation to return batteries to special disposal locations.

Handling discs

Always keep the CD compartment shut to prevent dust or dirt from getting into the CD mechanism.
Do not touch the recorded surface.
Do not stick paper or write on either side of the CD.
Do not bend the CD.
Only handle a disc on its outer edges.

KARCHER RR 510 Radio CD Player FM CD - Handling discs

Storing discs

To avoid scratches/damages always put CDs back into their cases after use.
Do not expose CDs to direct sunlight, dust, dirt, high temperatures, high humidity or water.

Cleaning discs

Use a soft cloth to wipe fingerprints and dust from the disc surface.
Carefully move the cloth from the center of the disc to its edge:
Never use benzene, thinners, record cleaner fluid, or antistatic spray to clean CDs.

Compatibility

Due to the numerous compression methods, some discs may not play.

Further Notes on the Device

Intended use
This product is intended for private/personal use only.

Setting a safe volume level

If you continually listen to loud music, your hearing gradually adapts to it and gives you the impression that the volume is lower.
What seems normal to you can be already for a long time too loud and unhealthy.
To protect yourself from this, set the volume to a low level.
Increase the volume slowly.
Damage to your hearing can be extensive and cannot be reversed.
If you notice a hearing problem, please consult a doctor.

Condensation

Condensation may occur when moving the device from a cold to a warm environment. If there is moisture inside the player, it may not operate properly.
Don’t turn on the device and wait about one hour for the moisture to evaporate.

Saving energy

If there is no audio signal within approximately 15 minutes, the unit will switch into standby mode automatically (except in radio mode).
If the unit is not used for a long period of time, it should be unplugged from the AC socket and batteries should be removed.

Unpacking

Take out carefully the unit from the packing. Please keep the packing for further use.
Carefully remove possible protection cardboards and slipcovers.

Location of Controls

KARCHER RR 510 Radio CD Player FM CD - Location of
Controls

1. VOLUME CONTROL	14. STANDBY INDICATOR
2. PHONES JACK	15. MEMORY/PROGRAM/MODE BUTTON
3. HANDLE	16. LCD DISPLAY
4. CD DOOR	17. POWER (ON/OFF)/SOURCE BUTTON
5. CD DOOR OPEN AREA	18. 10+/ALBUM BUTTON
6. USB PORT	19. CH-/STOP BUTTON
7. CASSETTE PAUSE BUTTON	20. CH+/PLAY/PAUSE BUTTON
8. CASSETTE STOP/EJECT BUTTON	21. SPEAKERS
9. CASSETTE FAST FORWARD BUTTON	22. CASSETTE DOOR
10. CASSETTE REWIND BUTTON	23. FM TELESCOPIC ANTENNA
11. CASSETTE PLAY BUTTON	24. BATTERY COMPARTMENT
12. TUNING-/SKIP/SEARCH DOWN BUTTON	25. AC SOCKET
13. TUNING+/SKIP/SEARCH UP BUTTON

Power Supply

Battery Operation

Remove the Battery Compartment Cover by gently pushing the clips downward and outwards.
Install 6 x ‘C’ size batteries (UM-2 or equivalent) and take care that the correct polarities are observed.
Replace the battery compartment cover.

Notes:

The AC line cord must be removed for battery operation.
To avoid damage that may result from leaking batteries, remove the batteries when they become exhausted or when the unit is not to be used for a long period of time.

AC Mains Operation

Before making any connections, check that the voltage marked on the rating label located at the bottom of the unit corresponds with your household supply.
Insert the AC line cord plug into the AC INPUT SOCKET of the unit and plug the other end of the cord into a standard household supply outlet.

LCD Display

KARCHER RR 510 Radio CD Player FM CD - LCD Display

1. “PROG” shows during Programming and in programmed play.| 9. “RANDOM” shows when in RANDOM playback.
---|---
2. “WMA” shows when the file played is in WMA format.| 10. This shows when the player reads data from a USB data traveler.
3. “MP3” shows when the file played is in MP3 format.| 11. Shows the current album and track number alternatively.
4. “CD” shows when the disc played is a CD-DA.| 12. Shows the current album and track number alternatively.
5. “REPT1” shows when in current track repeat mode.| 13. This figure is the elapsed minutes of the track played.
6. “DIR” shows when in album repeat mode.| 14. This figure is the elapsed seconds of the track played.
7. “ALL” shows when in all tracks repeat mode.| 15. English Text display. The information of the current track is displayed scrolling forward in MP3 playback.
8. “INTRO” shows when in INTRO playback.|

Radio

The STANDBY indicator will light up once the unit is connected to the power supply. Turn the unit on by pressing the POWER (ON/OFF)/SOURCE
Press the POWER (ON/OFF)/SOURCE button repeatedly to select the radio mode (“TUNER” is shown in the display).
Select the desired radio station by pressing the TUNING-/SKIP/SEARCH DOWN or TUNING+/ SKIP/SEARCH UP button repeatedly.
To automatically search for the next available radio station, press and hold for 2 seconds the TUNING-/SKIP/SEARCH DOWN or TUNING+/SKIP/SEARCH UP
If a station is broadcasting stereo, “ST” will be shown in the bottom left corner of the display.
Rotate the VOLUME CONTROL to set the volume as desired.
To switch the unit into standby mode, press and hold for 2 seconds the POWER (ON/OFF)/ SOURCE

Note:

The FM telescopic antenna is directional. When you are receiving an FM broadcast, fully extend the telescopic antenna and rotate it for the best reception.

Radio Station Presets
This unit enables you to store up to 20 radio stations.

Select the desired radio station and then press the MEMORY/PROGRAM/MODE button to store the current station. The memory number flashes on the screen.
Use the CH-/STOP button or the CH+/PLAY/PAUSE button to select the corresponding memory number among P-01 ~ P-20 for storing the station.
Confirm your selection by pressing the MEMORY/PROGRAM/MODE button.
Repeat steps 1 – 3 to store up to 20 radio stations in the memory.
To recall a preset station Press the CH-/STOP button or the CH+/PLAY/PAUSE button repeatedly in radio mode until you reach the desired memory number.

Cassette Playback

PLAY button
Press the PLAY button to start playing a cassette.

REWIND button
Press the REWIND button to rewind a tape quickly. Press the STOP/EJECT button to release the button at the end of the tape.

FAST FORWARD button
Press the FAST FORWARD button to advance the tape quickly. Press the STOP/EJECT button to release the button at the end of the tape.

STOP/EJECT button
Press the STOP/EJECT button to cancel a selection, i.e, press this button during cassette play to stop the tape.
In stop mode, press the button to eject the cassette.

PAUSE button
The PAUSE button can be used to interrupt playback temporarily. Press the button once to pause playback, press the button again to continue playback.
Note: In Pause mode, the Cassette motor is still energized, therefore the feature should not be used for long periods of time.

Automatic Stop
The cassette mechanism has a built-in automatic stop. During playback, the unit will automatically stop when the end of the tape is detected.

To Play a Cassette Tape

Open the cassette door by pressing the cassette S TOP/EJECT button.
Insert a cassette with the exposed tape facing upwards and the full reel on the right (unit plays from right to left) into the guides on the inside of the cassette door.
Close the cassette door.
Turn the unit on by pressing the POWER (ON/OFF)/SOURCE button.
Press the POWER (ON/OFF)/SOURCE button repeatedly to select the cassette mode (“TAPE” is shown in the display).
Press the cassette PLAY button to start the tape playing.
Adjust the VOLUME CONTROL to a comfortable listening level.
To stop the tape from playing, press the STOP/EJECT button. Press the button again to open the cassette door and eject the tape.

KARCHER RR 510 Radio CD Player FM CD - Cassette
Playback

Note:
During play, when the end of the tape is reached the PLAY button will pop up and play will stop. To play the other side of the tape, remove the cassette, turn the cassette over so that the full reel is on the right, insert the cassette and press the PLAY button.

Care of Cassette Tapes to Help Avoid Tangles
Loose tape may jam or get tangled in the cassette player. With a hexagonal pencil or a similar tool, gently turn the pencil to tighten the tape, as shown opposite.
If the spool feels tight when taking up the slack tape as described above, this may be due to ridges on the spool of tape.
Tight spools can lead to uneven playback speed or tape tangling. In most cases, the ridges can be removed by fast winding the cassette from one end to the other and back again.
Avoid the use of C120 tapes with this unit.

Maintenance
If the sound becomes muffled or in any case after every 15 hours of operation, clean the pinch roller, capstan, and play head. Open the cassette door and use a cotton bud moistened with special tape head cleaning fluid.

CAUTION
Never touch any of the parts described above with a metal object. Do not insert a cassette until the cleaned parts are completely dry.

CD Playback

Loading a Disc

Open the CD door by the OPEN area.
Insert a disc with the label side facing upward.
Close the CD door.

Note: Never touch the laser lens inside the CD compartment. If it ever gets dirty, clean it with a CD cleaner disc.

Removing a Disc

Make sure the CD is not playing. If it is, press the CH-/STOP button.
Open the CD door.
Gently remove the disc.
Close the CD door by hand.
Replace the disc in its protective storage box.

Playing a CD

Turn the unit on by pressing the POWER (ON/OFF)/SOURCE button.
Press the POWER (ON/OFF)/SOURCE button repeatedly to select the CD mode (“CD” is shown in the display).
Follow the steps above to load a disc.
The player begins reading disc immediately.
When the disc is successfully read, the total number of the tracks shows on the LCD and playback follows with the first track.
Press the CH+/PLAY/PAUSE button once to halt music playback, “PAUSE” is shown in the display; press this button again to resume normal playback. Press the CH-/STOP button to stop music playback, the LCD shows the total number of the tracks again.

Fast Forward / Fast Rewind & Skipping Tracks (CD/MP3/WMA/USB)

To jump to the beginning of the currently playing track, press the TUNING-/SKIP/SEARCH DOWN button once. Press it a second time to skip to the previous track.
To skip to the next track, press the TUNING+/SKIP/SEARCH UP button once.
To fast forward the currently playing track, press and hold the TUNING+/SKIP/SEARCH UP button. Once you reach the desired section of the track, release the button to resume normal playback.
To fast rewind the currently playing track, press and hold the TUNING-/SKIP/SEARCH DOWN button. Once you reach the desired section of the track, release the button to resume normal playback.
Press the 10+/ALBUM button once during playback to skip 10 tracks at a time. This is especially helpful on discs with a large number of tracks.

Skipping to the Previous/Next Album (MP3/WMA/USB)

During playback, press and hold the 10+/ALBUM button to jump to the next album.
This function is only available when the disc or USB contains several albums (folders).

Repeat, Random & Intro Modes (CD)
At any time during playback,

Press the MEMORY/PROGRAM/MODE button once to repeat the current track. “REPT1” will be shown in the display.
Press the MEMORY/PROGRAM/MODE button twice to repeat all tracks. “ALL” will be shown in the display.
Press the MEMORY/PROGRAM/MODE button a third time to enter the random play function. All tracks on the disc will be played in random order. “RANDOM” will be shown in the display.
Press the MEMORY/PROGRAM/MODE button a fourth time to enter the intro function. Each track will be played for 10 seconds and then jump to the next track. “INTRO” will be shown on the display.
Press the MEMORY/PROGRAM/MODE button a fifth time to deactivate the repeat function and return to normal playback.

Repeat, Random & Intro Modes (MP3/WMA/USB)
At any time during playback,

Press the MEMORY/PROGRAM/MODE button once to repeat the current track. “REPT1” will be shown in the display.
Press the MEMORY/PROGRAM/MODE button twice to repeat the current album (if any). “DIR” will be shown in the display.
Press the MEMORY/PROGRAM/MODE button a third time to repeat all tracks. “ALL” will be shown in the display.
Press the MEMORY/PROGRAM/MODE button a fourth time to enter the random play function. All tracks on the disc will be played in random order. “RANDOM” will be shown in the display.
Press the MEMORY/PROGRAM/MODE button a fifth time to enter the intro function. Each track will be played for 10 seconds and then jump to the next track. “INTRO” will be shown in the display.
Press the MEMORY/PROGRAM/MODE button a sixth time to deactivate the repeat function and return to normal playback.

Anti-Shock Protection
Special circuitry inside the player guarantees that there will be no sound skipping when the player is subject to shock and shaking in music playback.
If there is too much vicious vibration or shaking exerted on the player, the player may malfunction and sound skipping is caused.
When this happens, place the player on a level table where no vibration will be brought. Normal sound will resume immediately.

Programmed Play (CDI

The tracks on the disc can be programmed for play in any order (up to 20 tracks can be programmed).

While in CD stop mode, press the MEMORY/PROGRAM/MODE “PROG” and “001 P-01” are shown on the LCD, and the tracking number “001” is flashing.
Select the first track to be programmed using the TUNING+/SKIP/SEARCH UP button or the TUNING – /SKIP/SEARCH DOWN button, and then press the MEMORY/PROGRAM/MODE button again to store and advance to the next programming step.
Repeat the above steps to program more tracks. A maximum of 20 tracks for CD can be programmed in memory in a preferred order.
Press the CH+/PLAY/PAUSE button to begin programmed play in the preferred order after you are done with programming. The player stops automatically after all programmed tracks are
You may press the CH – /STOP button to terminate programmed playback. In program stop mode, press the CH+/PLAY/PAUSE button to begin the programmed playback with the programming order identical to the previous one done. Press the CH – /STOP button again to clear the pro
During programmed playback, press the MEMORY/PROGRAM/MODE button once to repeat the current track; press the button twice to repeat all the programmed tracks; press the button three times to exit repeat mode.

Programmed Play (MP3/WMA/USB)
On MP3/WMA discs or USB playback up to 99 tracks can be programmed.
For the MP3/WMA/USB programming, it is necessary to select an album first and then a track in this album.

At stop mode, press the MEMORY/PROGRAM/MODE button. “PROG” and “F001 P-01” are shown on the LCD, and the album number “F001” is flashing.
Press the TUNING+/SKIP/SEARCH UP button or the TUNING-/SKIP/SEARCH DOWN button to select an album and then press the MEMORY/PROGRAM/MODE button to confirm.
The further operating steps are the same as the CD programming described above.

Note: ID information: For playing some MP3 disc with ID information, the LCD display can show the title of the disc/names of the artists and ALBUM.

USB Playback

Press the POWER (ON/OFF)/SOURCE button to turn the unit on.
Insert a USB stick into the USB port.
Press the POWER (ON/OFF)/SOURCE button repeatedly to switch to USB mode (“USB” is shown in the display).
When the inserted USB is detected and read, the first track will be played automatically.
Press the CH+/PLAY/PAUSE button to pause or resume the playback.
Press the CH-/STOP button to stop the playback.

Playback modes
Skipping, fast-forwarding, and fast rewinding tracks, repeat modes, and intro & random functions in USB mode is the same as for MP3-CD playback. Please see the previous chapter for the instructions.

Notes:

A USB device must always be connected directly to the USB port of this product. The use of A USB extension cord is not supported by this product. The USB port of this product cannot communicate with a computer directly.
The reading time for a USB drive varies depending on the speed of the memory device and the number of songs and folders. In some cases, the reading time may be as long as 60 seconds.
Always switch off the unit before removing a USB flash drive to prevent damage to your USB device. The manufacturer is not responsible for the loss or damage of data.
Due to numerous methods of compression, it could be that some files or USB flash drives cannot be played.

Stereo Headphone Connector

A Stereo Phone Jack (3.5mm) has been provided on the top of the cabinet so that you can listen to the set without disturbing others. To use this jack, plugin low impedance headphones/earphones (not included) and adjust the VOLUME CONTROL to a comfortable listening level.
Note: When external headphones/earphones are connected, the sound from the unit of main speakers will be muted.
Caution: Listening at high power for a long moment could damage users’ ears.