Audio-Techica ATH-M20xBT User manual

ATH-M20xBT
Wireless Headphones
User Manual
English

4
Notes on use
Be sure to read the connected device’s user manual before use.
Audio-Technica will not be liable in any way for any loss of data in the unlikely event that such losses should occur
while using the product.
On public transportation or in other public places, keep the volume low so as not to disturb other people.
Minimize the volume on your device before connecting the product.
When using the product in a dry environment, you may feel a tingling sensation in your ears. This is caused by static
electricity accumulated on your body, not by product malfunction.
Do not subject the product to strong impact.
Do not store the product in direct sunlight, near heating devices, or in hot, humid, or dusty places. Additionally, do
not allow the product to get wet.
When the product is used for a long time, the product may become discolored due to ultraviolet light (especially
direct sunlight) and wear.
If the product is placed in a bag while the USB charging cable is still connected, the USB charging cable may
become caught, severed, or broken.
Make sure to hold the plug when connecting and disconnecting the USB charging cable. The USB charging cable
may become severed or an accident may occur if you pull on the cable itself.
When you are not using the USB charging cable, disconnect it from the product.
Do not charge the battery if the terminal of the USB charging cable is bent, loose, or damaged. Doing so may cause
heat generation, smoke emission, fire or electric shock.
This product can be used to talk on the phone only when using a mobile telephone network. Support for telephony
apps that use a mobile data network is not guaranteed.
If you use the product near an electronic device or transmitter (such as a mobile phone), unwanted noise may be
heard. In this case, move the product away from the electronic device or transmitter.
If you use the product near a TV or radio antenna, noise may be seen or heard in the television or radio signal. In this
case, move the product away from the TV or radio antenna.
To protect the built-in rechargeable battery, charge it at least once every 6 months. If too much time passes between
charges, the life of the rechargeable battery may be reduced, or the rechargeable battery may no longer be able to be
charged.
Do not charge the product if water or foreign matter is inside the battery jack or USB charging cable. Doing so may
cause corrosion, heat generation, smoke, fire, or other malfunction or electric shock in the battery jack or USB
charging cable.
Charge the product in a well-ventilated place (10 to 35°C (50 to 95°F)) away from direct sunlight. Otherwise, the
battery may deteriorate, possibly resulting in shorter periods of continuous use or may fail to charge.
If the product is wet with sweat, wipe off any moisture with a dry cloth before charging.

5
For a more comfortable Bluetooth communication
experience
The effective communication range of this product varies depending on obstructions and radio wave conditions. For a
more enjoyable experience, please use the product as close as possible to the Bluetooth device. To minimize noise and
sound disruptions, avoid placing your body or other obstacles between the product’s antenna (L side) and the Bluetooth
device.
R L
1
1
Antenna

6
Part names and functions
Headphones
4
6
5
2
1
3
7
1
L/R (left/right) indicator
2
Earpad
3
Headband
4
Slider
5
Arm
6
Housing
7
Indicator lamp
Displays the operating status and battery level of the product.

Part names and functions
7
Operation area
2 3 4
1
5
1
Microphone
2
Battery jack
Use to connect the included USB charging cable and charge the product.
3
Connector jack
Use to connect the included cable for wired connections.
4
Power supply / control button
Use to turn the power supply ON/OFF, play/pause music, and answer phone calls.
5
Volume buttons
Use to adjust the volume up or down (+/–).
Accessories
2 1
1
USB charging cable (30cm (12"), USB Type-A / USB Type-C™)
2
Cable (1.2 m (3.9’) / 3.5 mm (1/8”) gold-plated stereo mini-plug (3 pole/Lshaped))

8
Charging the battery
Fully charge the battery when using for the first time.
When the rechargeable battery is running low, the voice guidance will play the message “Low battery”, and the
indicator lamp will flash in red. Charge the battery as soon as possible.
It takes about 4 hours maximum to charge the battery fully. (This time may vary depending on usage conditions.)
Charge the product in a well-ventilated place (10 to 35°C (50 to 95°F)) away from direct sunlight. Otherwise, the battery
may deteriorate, possibly resulting in shorter periods of continuous use or may fail to charge.
1Connect the included USB charging cable (USB Type-C side) to the battery jack.
The included USB charging cable is designed for exclusive use with the product. Do not use any other USB
charging cable.
When inserting the USB charging cable into the USB port or battery jack, insert it directly (horizontally).
1 2
1
USB Type-A
2
USB Type-C
2Connect the included USB charging cable (USB Type-A side) to the computer to start charging.
While charging, the indicator lamp lights as follows. (It may take several seconds for the indicator lamp to
light.)
Indicator lamp Status
Lit red Charging
Off Charging complete
Flashing red Charging error[1]
[1] The headphones may be hot. Allow the temperature of the product to cool sufficiently before charging in a well-ventilated place (10 to 35°C
(50 to 95°F)) away from direct sunlight.
3When charging is complete, disconnect the USB charging cable (USB Type-A side) from the
computer.
4Disconnect the USB charging cable (USB Type-C side) from the product’s battery jack.
If you start to charge while the product is on, it will automatically turn off.

Charging the battery
9
When charging, make sure to use the included USB charging cable. The product may not charge with
cables other than the included USB charging cable.

10
Power supply ON/OFF
Turning on the product
1Press and hold the power supply/control button (about 2 seconds).
The indicator lamp lights in white, and then flashes. Voice guidance is played.
It may take several seconds for the indicator lamp to light.
See "Voice guidance" (p. 19) for more information on voice guidance.
Turning off the product
1Press and hold the power supply/control button (about 2 seconds).
The indicator lamp lights in white, and then turns off.

11
Connecting via Bluetooth
To connect the product to a Bluetooth device, the product needs to pair (register) with the device.
Pairing a Bluetooth device
Read the user manual for the Bluetooth device.
Place the Bluetooth device within 1 m (3.3') of the product to perform pairing correctly.
Wear the product to hear voice guidance during pairing.
1Starting with the product turned off, turn it on.
The indicator lamp will light in white, and then flash in white.
2Use your Bluetooth device to begin the pairing process and search for the product. When your
Bluetooth device finds the product, “ATH-M20xBT” will be displayed on the device.
For information about using your Bluetooth device, refer to the device’s user manual.
3Select “ATH-M20xBT” to pair the product and your Bluetooth device.
Some devices may ask for a passkey. In this case, enter “0000”. The passkey may also be called a passcode,
PIN code, PIN number, or password.
Bluetooth ON
ATH-M20xBT
The voice guidance will play the message “Bluetooth connected”, and the indicator lamp will flash
slowly in white. This indicates pairing was successfully completed.
Pairing with Fast Pair
In one touch, the product enables quick, effortless Bluetooth pairing with your Android devices. You can even check to
see where you last placed it.

Connecting via Bluetooth
12
1Turn on the Bluetooth function on an Android device configured with a Google account.
2Turn on the product and bring the product close to the Android device.
For information about using your Bluetooth device, refer to the device’s user manual.
3Touch the pairing notification that appears on your Android device.
The voice guidance will play the message “Bluetooth connected” when pairing is complete. The
indicator lamp will begin flashing slowly in white.
About pairing
When connecting a new Bluetooth device, you need to pair it with the product. Once the Bluetooth device and the
product are paired, you do not need to pair them again. The product supports multipairing, in which a connection history
is saved. However, in the following cases you will need to pair again even if the Bluetooth device was paired once:
If the product is deleted from the Bluetooth device’s connection history.
If the product is sent out for repair.
If the product is reset.
Multipoint function
The product supports multipoint, which allows two Bluetooth devices to be connected at the same time. While you are
listening to music with one device, you can answer a call that comes in from the other device. It is convenient if you have
two smartphones, for example.
Audio-Technica does not guarantee the operation of all combinations of Bluetooth devices.
Connecting using multipoint
1Pair with the first Bluetooth device.
2After pairing with the first device, turn off its Bluetooth feature.
3Pair with the second Bluetooth device.
4Turn on the Bluetooth feature of the first Bluetooth device.
If the product does not connect, restart its power.
Up to two Bluetooth devices can be connected at the same time with multipoint. To connect a third
Bluetooth device, disconnect one of the connected devices.

13
Wearing the product
Put the side of the product marked “L” (LEFT) onto the left ear and the side marked “R” (RIGHT) onto the right ear, slide
the slider up and down so that the earpads cover the ears, and then adjust the headband.

14
Using the product
The product can use Bluetooth wireless technology to connect to your device and play music, receive phone calls, etc.
Use the product for whichever of these purposes suits your needs. Note that Audio-Technica cannot guarantee the
operation of displays, such as the battery level display, or applications via Bluetooth devices.
Listening to music
To connect for the first time, pair the product and your device via Bluetooth wireless technology. If you have already
paired the product and your Bluetooth device, turn on the Bluetooth device’s Bluetooth connection before turning on the
product.
Use your Bluetooth device to start playback, referring to the device’s user manual as necessary.
1Turn on the product and place the product on your ears.
2Start music playback on your Bluetooth device.
3Adjust the volume by pressing the volume buttons (+/–).
4Press the power supply / control button to stop playback.
Playback will be started or stopped with every press.
Power supply / control button operation
1
1
Power supply / control button
Operation Function
Press Starts or pauses playback.
Press (twice) Depending on the connected device, activates the device’s speech
recognition function (such as Siri for compatible iOS devices).

Using the product
15
The controls explained above may not be available on some smartphones.
Volume button operation
1
1
Volume buttons
Operation Function
Press Increases/decreases the volume by 1 level. [1][2]
Press and hold (about 2 seconds) Plays the next track.
Plays the previous track / returns to the start of the track.
[1] A beep is heard when the volume is at the maximum or minimum level.
[2] The volume control of some Bluetooth devices may not work well with the product.
The controls explained above may not be available on some smartphones.
Talking on the phone
If your Bluetooth device supports telephone features, you can use the product to talk on the phone.
1Turn on the product and place the product on your ears.
2Make/receive calls with your Bluetooth device.
When your Bluetooth device receives a phone call, the product sounds a ringtone.
If a call is received while you are listening to music, music playback is paused.
3Adjust the volume by pressing the volume buttons (+/–).
4Press the power supply / control button to end the call.
If the call was received while listening to music, playback is resumed.
Music playback may not be resumed on some Bluetooth devices. In this case, music playback must be started
manually.

Using the product
16
Power supply / control button operation
1
1
Power supply / control button
Operation Function
Press
Receiving a call: Answers the call.
Making a call: Cancels the call.
During a call: Ends the call.
Press and hold (about 2 seconds)
Receiving a call: Rejects the call.
Making or during a call: When pressed and held, the call switches
between the product and your Bluetooth device. [1]
[1] When you hear a confirmation tone, release the power supply / control button.
The controls explained above may not be available on some smartphones.
Volume button operation
1
1
Volume buttons
Operation Function
Press Increases/decreases the call volume by 1 level.
The controls explained above may not be available on some smartphones.
Low latency mode
Low latency mode reduces sound delay when playing games or watching videos.
Bluetooth communication can be easily affected by obstacles and radio wave conditions.

Using the product
17
1Press the power supply / control button three times in a row.
With every three presses, the voice guidance will play the message “Low latency mode” or “Low
latency mode off”, and low latency mode will be switched ON/OFF.
Low latency mode cannot be switched ON/OFF during a call or during voice input using the speech
recognition feature.
Wired connection (playthrough function)
The product has a playthrough that allows you to use it as portable headphones and play back music even when there is
no battery power. You can connect the connector plug of the included cable to the product’s connector jack, and then
connect the input plug into a portable audio player. The buttons on the headphone cannot be used for operation when
using a wired connection.
2 3 41
1
Smartphone, portable audio player, etc.
2
Input plug
3
Connector plug
4
Connector jack
Auto power off function
The product automatically turns off after 5 minutes of not being connected to a device. The product also automatically
turns off after 5 minutes in the “Waiting to be connected” status.

18
Indicator lamp display
The indicator lamp of the product indicates the product’s status.
Pairing
Status Indicator lamp display pattern
Searching for devices
○-○-○・・・
Flashing white (gradually lighting up)
Connecting
Status Indicator lamp display pattern
Waiting to be connected
○--------○--------○・・・
Flashing white in 8-second intervals (gradually lighting up)
Connecting
○----○----○・・・
Flashing white in 4-second intervals
Music is playing
○----○----○・・・
Flashing white in 4-second intervals (gradually lighting up)
Battery level
Status Indicator lamp display pattern
Battery level is low
●●●----●●●・・・
Flashing red 3 times in 4-minute intervals
Charging
Status Indicator lamp display pattern
Charging
●
Lit red
Fully charged
●
Off
Charging error
●-●-●・・・
Flashing red

19
Voice guidance
The product plays English voice guidance in the following situations.
Situation Voice guidance
Power is turned on
Voice guidance varies depending on the battery level:
Battery level high
Battery level medium
Battery level low
Bluetooth is connected Bluetooth connected
Bluetooth is disconnected Bluetooth disconnected
Low latency mode ON Low latency mode
Low latency mode OFF Low latency mode off
Music is played Play
Music is paused Pause
Battery level is low Low battery

20
Cleaning
Get into the habit of regularly cleaning the product to ensure that it will last for a long time. Do not use alcohol, paint
thinners, or other solvents for cleaning purposes.
Use a dry cloth to clean the headphones.
To clean the earpads and headband, wipe with a dry cloth. Earpads and headband may fade if sweat or water dries
on them. If the earpads and headband get wet, we recommend wiping them with a dry cloth and allowing them to
dry in the shade.
Immediately wipe off any moisture such as sweat from operating areas such as the buttons. Failure to do so may
result in a malfunction due to corrosion.
Wipe away any perspiration or dirt from the cable with a dry cloth immediately after use. Failure to clean the cable
may cause it to deteriorate and harden over time, resulting in malfunction.
Wipe the cable’s USB plug with a dry cloth if dirty.
Wipe the cable’s plug with a dry cloth if dirty. Failure to clean the plug may cause sound skipping or noise.
If the product will not be used for an extended period of time, store it in a well-ventilated place free from
high temperatures and humidity.
Earpads are consumable parts. The earpads deteriorate over time due to use or storage. Contact your local
Audio-Technica dealer for earpads replacement or other repairs.

21
Forced pairing mode / reset
If the product does not connect to a device (forced pairing
mode)
If pairing cannot be cancelled or is not successful, you can use forced pairing mode to perform pairing again.
1With the product turned on, press and hold (about 6 seconds) the volume buttons (+/–) at the same
time.
The product will switch to the “searching for devices” (pairing mode) state and you will be able to
pair with your desired Bluetooth device.
If the product operates abnormally (reset)
Reset the product.
1With the product turned on, press and hold (about 6 seconds) the volume buttons (+/–) at the same
time.
2Make sure the indicator lamp is flashing rapidly in white, and press and hold the power supply /
control button and the volume up button (+) at the same time (for about 6 seconds).
The indicator lamp will light in pink, and after the product restarts, reset is complete.
3Remove the product from the list of registered devices on your Bluetooth device.
4Pair the product again.

22
Troubleshooting
Power is not supplied
Charge the product.
Unable to pair
Confirm that the Bluetooth device communicates using Ver. 2.1+EDR or higher.
Place the product and the Bluetooth device within 1 m (3.3') of each other.
Set the profiles for the Bluetooth device. For procedures on how to set profiles, refer to the Bluetooth
device’s user manual.
Remove the pairing information for the Bluetooth device then pair the product with this device again.
Make sure you are not connected to any other previously connected Bluetooth device. If so, disconnect the
product using the previously connected Bluetooth device, and then select the product on the Bluetooth
device being connected to. Use forced pairing mode if you are unable to disconnect from a previously
connected Bluetooth device. For details, refer to "If the product does not connect to a device (forced pairing
mode)" (p. 21).
Reset the product if it cannot be unpaired, connected, or does not operate as expected even after trying all
other solutions. For details, refer to "If the product operates abnormally (reset)" (p. 21).
No sound is heard / Sound is faint
Turn on the power of the product and the Bluetooth device.
Turn up the volume on the product and the Bluetooth device.
Make sure that the product and Bluetooth device are connected by the A2DP (or audio connection).
Disable pairing for the product and the Bluetooth device, then pair the product with this device again.
Move away from obstacles between the product and the Bluetooth device, such as people, metal, or walls,
and place the product and device closer together.
Switch the sound output of the Bluetooth device to the product.
Sound is distorted / Noise is heard / Sound cuts out
Turn down the volume on the product and the Bluetooth device.
Keep the product away from devices that emit radio waves such as microwaves and wireless routers.
Keep the product away from TVs, radios, and devices with built-in tuners. These devices can also be affected
by the product.
Turn off the equalizer settings of the Bluetooth device.
Remove obstacles between the product and the Bluetooth device and place them closer together. For
details, refer to "For a more comfortable Bluetooth communication experience" (p. 5).