Master&Dynamic MG20 User manual

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Master & Dynamic is a New York City-based premium audio company
with a deep passion for building technically sophisticated sound tools.
Designed to be modern yet timeless, our products utilize only the
finest materials and are engineered to last, creating the perfect
balance of aesthetics, strength, comfort, and exceptional sound.
NEVER SOUND THE SAME
USER MANUAL

1. Premium Alcantara®and
Coated Canvas Headband
2. Lightweight Cast Magnesium
Ear Cups
3. USB-C Input for Passive Audio
& Charging
4. Boom Microphone
5. Internal Microphones
6. Replaceable Memory Foam
Lambskin Ear Pads
7. Polished Aluminum
Adjustment Arm
2
1
2
7
6
3
OVERVIEW
SPECS
DIMENSIONS
173.83mm x 197.32mm x 84.53mm
WEIGHT
312g // 322g with Boom Microphone
BLUETOOTH ®PROFILE
Bluetooth 5.0 technology
IMPEDANCE
32 Ohms
DRIVERS
50mm Beryllium
4
5
SBC, AAC & Qualcomm®aptX™ HD
for music, aptX™ Low-Latency

3
LEFT CONTROLS RIGHT
Microphone Vol + / Vol -
Press to Mute / Un-Mute Microphone
7.1 Surround Sound
ON / OFF
Bluetooth Pairing
Mute Indicator
Battery Indicator
Mic Muted
High Med Low
Master Vol + / Vol -
Multi-Function Button
1X: Play/Pause or Answer/End Call
2X: Skip Forward
3X: Skip Back
LONG PRESS: Voice Assistant

4
CONNECTIVITY
WIRED AUDIO
Plug the provided USB-C to 3.5mm cable into headphone audio input to engage
passive (wired) audio. Headphones are required to be powered on for audio
to work.
PAIRING / CONNECT TO A BLUETOOTH DEVICE
Activate Pairing Mode by powering ON the MG20 and continuing to hold the
button until the ring pulses and the pairing tone is heard. Access the
Bluetooth menu on your device and select M&D MG20.
LOW-LATENCY ADAPTER
MULTIPOINT
Up to two devices can be connected to the MG20 at one time, including the
Low-Latency Adapter. If two devices other than the Low-Latency Adapter are
connected to the MG20, the MG20 will need to be put back in pairing mode in
order to reconnect to the Low-Latency Adapter.
1. Unplug the adapter.
2. Put the MG20 into pairing mode.
3. Ensure your PC or Playstation is powered ON.
4. Plug the adapter back in.
Plug the adapter into a PC or Playstation and power on the MG20. If no
connection is made:
POWERING ON/OFF
Press and hold button to power ON/OFF. Battery level will be displayed at
startup. To conserve power, the MG20 will enter sleep mode after 10 minutes
of not being worn.

5
ADJUSTABILITY, FIT + COMFORT CHANGING / REMOVING EAR PADS
Ear pads are magnetized for easy replacement. Simply grab the outside ring
of the ear pad and remove. Reattach ear pads by aligning the two guide posts
on the ear cup with the inside of the ear pad.
Adjust to find optimal fit. Rotates for comfort.

6
MOBILE APP CHARGING
Download the M&D Connect app for the complete Master & Dynamic experience. To charge, plug in the USB-C connector and connect to a USB-A power supply
(or USB-A port using the included adapter).
The headphones can be used
while charging.
A solid orange light indicates
charging and a solid green light
indicates a full charge when the
USB cable is connected.
Indicator
MG20 should be connected to your phone in the Bluetooth menu settings
prior to using the M&D Connect app.
Use the M&D Connect app to access:
• Firmware updates
• Custom settings
• EQ Presets
Charging Fully Charged
MICROPHONES
DETACHABLE BOOM MICROPHONE
The boom microphone is the MG20’s primary microphone and provides optimal
talk quality, but can be detatched at any time. When detached, the internal
microphone will automatically be enabled.

7
PAIRING TO 2 DEVICES
1. Enter pairing mode and connect to device 1.
2. Enter pairing mode again and connect to device 2. Device 1 will disconnect.
3. Power OFF Headphones
4. Turn headphones on and headphones will automatically connect to device 1
and 2 simultaneously.
5. Pause one device and play from the other to swap headphones connection.
MAINTENANCE / CARE
Clean ear pads and headphones with a soft, slightly damp cloth. Do not
soak, submerge, or allow moisture to enter near the drivers or cable jacks.
Replacement ear pads and cables can be purchased at:
www.masterdynamic.com
Do not drop, sit on, or allow the headphones to be exposed to water, moisture,
or extreme temperature.
It is recommended that you return your headphones to their storage pouch
when not in use. To avoid damage, do not store other items in the headphone
pouch along with your headphones. CAUTION: Incorrectly rotating or over
rotating the ear cups can damage the headphones.
TEMPERATURE RANGE
Operate and store this product within the temperature range of -4°F to
113°F (-20°C to 45°C) only. Charge the battery where the temperature is
between 41°F and 104°F (5°C and 40°C) only.

8
ACCESSORIES
Headphone Pouch 3.5mm Audio Spliiter to allow for separate analog
microphone and headphone connections
USB-C to USB-A Charging Cable
USB-C to 3.5mm Cable Boom Mic
Optional Boom Mic Foam Cover to reduce
pop sounds and protect the microphone
Low-Latency Adapter

9
MAINTENANCE + TROUBLESHOOTING
THE HEADPHONES AND DEVICE WILL NOT PAIR:
1. Make sure the headphones are charged. Cycle power switch OFF and ON.
2. Turn the Bluetooth OFF, then ON again on the source device.
3. Turn Off the Bluetooth feature on any other device that is paired with
the headphones.
4. Hold power button down for 5 seconds to enter pairing mode.
5. Make sure “M&D MG20” is selected in the Bluetooth device list.
FACTORY RESET
Power Off the headphones. Hold power button for 5 seconds to enter
pairing mode. Simultaneously hold multi-function button and power button
until LED lights flash red/white. LED light will flash 4x. The headphones will
then be reset.
NO AUDIO OR POOR AUDIO QUALITY FROM A CONNECTED
BLUETOOTH DEVICE:
1. Move the device closer to the headphones, as physical objects between the
headphone and the source may obstruct the signal.
2. Try another music application or try another track.
3. Try a different audio device.
4. Disconnect from multipoint and use with only one device at a time.

10
EAR HEALTH
Our ability to hear is amazing. Treat your ears like the precious tools they
are, and they will continue to provide you with exceptional data, as well as a
lifetime of incredible sonic experiences.
In general, do not listen “too loud” or for “too long,” and be attentive to your
own ears. Ringing, discomfort, or sensitivity to high frequencies and treble
may be a signal from your ears that you are pushing them to their limits and
causing irreparable damage.
As a general practice, find what seems to be your preferred listening level
and then adjust the volume down another 10% or more. Surprisingly, your
ears will attune to a slightly lower volume over time, and what seems quiet
at first can be perfect for longer listening periods.
NIHL
NIHL is a preventable condition caused by both one-time and extended
exposure to excessive decibel (dB) levels. This harm to sensitive inner ear
structures is irreversible and people of all ages can be affected. Damage
can happen in a single event or gradually over time. One-time exposure to
an intense “impulse” sound, such as an explosion, or by continued exposure
to loud sounds over 85 decibels can cause harm. Indicators of NIHL include
hearing loss and tinnitus, a condition of sensing constant ringing, buzzing, or
roaring. The NIDCD (National Institute on Deafness and Other Communication
Disorders) offers this simple rule of thumb: avoid sound exposure that is
“too loud, too close, or too long.” Here are some general references to sound
levels that occur in everyday life: refrigerator humming (45 dB); normal
conversation (60 dB); city traffic (85 dB); motorcycles (95 dB); an MP3 player
at full volume (105 dB); sirens (120 dB); firecrackers (150 dB).

11
WARRANTY + CUSTOMER SERVICE
Master & Dynamic guarantees this product against defects in materials or
workmanship for a period of two years from the date of original purchase
on our website or from an authorized Master & Dynamic retailer or
reseller. As an exception to this warranty period, batteries are guaranteed
for proper functioning for a period of one year from the date of original
purchase. Defective batteries are covered by Master & Dynamic’s Limited
Warranty but battery wear from normal use is not covered.
If returned within the warranty period, Master & Dynamic will at its
discretion either repair the defective product or replace it with a repaired
or refurbished product of identical specifications as the returned product.
This limited warranty is in lieu of all other warranties, expressed or implied,
including, but not limited to, any implied warranty of merchantability or
fitness for a particular purpose.
Master & Dynamic shall have no liability of any kind for any direct, indirect,
incidental, or consequential damages or expenses that arise from the use of
this product.
Master & Dynamic’s Limited Warranty does not cover normal wear and tear
to items such as blown drivers, battery degradation from normal use, cut
cords, bent jacks, torn headbands, loss, or theft. Replaceable parts such
as ear pads and cables will be replaced only in case of malfunctioning due
to material or manufacturing defects, and only once during the warranty
period of your product.
The serial number and proof of purchase are required in order to enact
the warranty for products purchased on our website or from an authorized
retailer or reseller. This policy is also applicable to products received as
a gift.
If we need to replace your product due to a battery defect, your product
will be new or equivalent to new in performance and reliability. You will void
your warranty if you disassemble your product or expose them to excessive
moisture. If you believe your product is defective within the warranty period,
please contact us at [email protected]. Please include your
product’s serial number, proof of purchase, telephone number, and full return
shipping address in your message to us. Conditional to serial number, proof
of purchase, and warranty validity, you will be issued a return authorization
and instructions for return shipment. Please note that the dispatch of
a replacement product will take place after our receipt of the defective
product. For questions regarding your product’s warranty, please contact
Master & Dynamic Support at [email protected].

12
Qualcomm is a trademark or registered trademark of Qualcomm
Incorporated. aptX is a trademark or registered trademark of Qualcomm
Technologies International, Ltd.
Qualcomm aptX, Qualcomm aptX™ HD,and Qualcomm aptX™ Low-Latency are
products of Qualcomm Technologies, Inc. and/or its subsidiaries.
The Bluetooth®word mark and logos are registered trademarks owned by
Bluetooth SIG, Inc. and any use of such marks by Master & Dynamic is under
license. Other trademarks and trade names are those of their respective
owners.
All registered trademarks are property of their respective owners.

Master & Dynamic est une société d'audio haut de gamme basée
à New York qui se passionne pour la construction d'outils sonores
techniquement sophistiqués. Conçus pour être modernes et pourtant
éternels, nos produits utilisent uniquement les meilleurs matériaux
et sont conçus pour la durabilité; créant l’équilibre parfait entre
l’esthétique, la solidité, le confort et la qualité sonore exceptionnelle.
JAMAIS LE MÊME SON
MANUEL DE L’UTILISATEUR
ÉCOUTEURS SANS FIL
POUR JEUX

1. Alcantara®de qualité supérieure et
bandeau en toile
2. Oreillettes en magnésium léger coulé
3. Entrée USB-C pour audio passif
et chargement
4. Micro perche
5. Micros internes
6. Oreillettes en peau d’agneau
à mousse en mémoire remplaçable.
7. Bras de réglage en aluminium poli
14
1
2
7
6
3
APERCU
CARACTERISTIQUES
DIMENSIONS
173,83mm x 197,32mm x 84,53mm
POIDS
312g // 322g avec microphone perche
PROFIL BLUETOOTH ®
TECHNOLOGIE Bluetooth 5.0
IMPÉDANCE
32 Ohms
PILOTES
50mm Béryllium
4
5
SBC, AAC et Qualcomm®aptX™ HD
pour la musique, aptX™ faible latence

15
GAUCHE CONTRÔLES DROIT
Microphone Vol + / Vol -
Appuyez pour mettre en sourdine/rétablir
le son du microphone
7.1 Surround Sound
ON/OFF
Jumelage Bluetooth
Indicateur de mise en sourdine
INDICATEUR DE CHARGE DE LA PILE
Microphone en sourdine
Élevé Médium Faible
Commande principale Vol +/Vol -
Bouton Multifonction
1X: Lecture/pause ou réponse/fin de l’appel
2X: Piste suivante
3X: Piste précédente
PRESSION SOUTENUE: Assistant vocal

16
CONNECTIVITÉ
AUDIO FILAIRE
Branchez le câble USB-C vers 3,5 mm fourni dans l'entrée audio des
écouteurs pour activer l'audio passif (filaire). Les écouteurs doivent
être allumés pour que le son fonctionne.
SE CONNECTER/JUMELER À UN APPAREIL BLUETOOTH
Activez le mode jumelage en mettant sous tension le MG20 et en maintenant
le bouton jusqu'à ce que la sonnerie retentisse et que la tonalité de
jumelage se fasse entendre. Accédez au menu Bluetooth de votre appareil et
sélectionnez M&D MG20.
ADAPTATEUR À FAIBLE LATENCE
MULTIPOINT
Jusqu'à deux appareils peuvent être connectés au MG20 en même temps,
y compris l'adaptateur à faible latence. Si deux appareils autres que
l'adaptateur à faible latence sont connectés au MG20, le MG20 devra être remis
en mode de jumelage afin de se reconnecter à l'adaptateur à faible latence.
1. Débranchez l'adaptateur.
2. Mettez le MG20 en mode jumelage.
3. Assurez-vous que votre PC ou Playstation est mis sous tension.
4. Rebranchez l'adaptateur.
Branchez l’adaptateur sur un PC ou une Playstation et mettez sous tension le
MG20. Si aucune connexion n'est établie:
MISE SOUS/HORS TENSION
Maintenir enfoncé le bouton pour mettre hors/sous tension. Le niveau de
la pile s’affiche au démarrage. Pour économiser l'énergie, le MG20 entrera en
mode veille après 10 minutes sans être porté.

17
AJUSTABILITÉ, AJUSTEMENT ET CONFORT CHANGER/RETIRER LES COUSSINETS D'OREILLE
Les coussinets d'oreilles sont magnétisés pour faciliter le retrait/
remplacement. Il suffit de saisir l'anneau extérieur du coussinet d’oreille et
de l’enlever. Rattacher les coussinets d’oreille en alignant les deux tiges de
guidage sur l'oreillette avec l'intérieur du coussinet d'oreille.
Régler pour trouver l’ajustement optimal. Tourner pour plus de confort.

18
APPLICATION MOBILE CHARGEMENT
Téléchargez l’application M&D Connect pour une expérience Master & Dynamic complète. Pour charger, branchez le connecteur USB-C et connectez à une alimentation
USB-A (ou à un port USB-A à l'aide de l'adaptateur fourni).
Les écouteurs peuvent être
utilisés pendant la charge.
Un voyant orange fixe indique
la charge et un voyant vert fixe
indique une charge complète
lorsque le câble USB est connecté.
Indicateur
Le MG20 doit être connecté à votre téléphone dans les paramètres du menu
Bluetooth avant d'utiliser l'application M&D Connect.
Utilisez l’application M&D Connect
pour accéder:
• Mises à jour du micrologiciel
• Paramètres personnalisés
• Préréglages d'égaliseur
En charge Complètement
chargé
MICROPHONES
MICROPHONE PERCHE AMOVIBLE
Le microphone perche est le microphone principal du MG20 et offre une
qualité de conversation optimale, mais peut être détaché à tout moment.
Une fois détaché, le microphone interne est activé.

19
JUMELAGE À 2 APPAREILS
1. Entrez en mode de jumelage et se connecter à l’appareil 1.
2. Entrez en mode de jumelage et se connecter à l’appareil 2.
L'appareil 1 se déconnectera.
3. Mettre les écouteurs hors tension
4. Mettre les écouteurs sous tension et ils se connecteront automatiquement
aux appareils 1 et 2 simultanément.
5. Mettez en pause un appareil et faites jouer l’autre pour échanger la
connexion des écouteurs
ENTRETIEN/SOINS
Nettoyez les coussinets d’oreille et les écouteurs avec un chiffon doux
et légèrement humide. Ne pas tremper, submerger ou laisser pénétrer
l’humidité à proximité des conducteurs ou des prises de câble. Des coussinets
d'oreille et des câbles de remplacement peuvent être achetés sur : www.
masterdynamic.com
Faire attention de ne pas faire tomber les écouteurs, s’assoir dessus, les
exposer à l’eau, à l’humidité ou à des températures extrêmes.
Il est recommandé de remettre vos écouteurs dans leur étui de rangement
lorsqu’ils ne sont pas utilisés. Pour éviter les dommages, ne stockez pas d’autres
articles avec vos écouteurs dans l’étui en toile. MISE EN GARDE: Une rotation
incorrecte ou une rotation excessive des écouteurs peut les endommager.
PLAGE DE TEMPÉRATURE
Utilisez et rangez ce produit dans la plage de température de-4°F à 113°F
(-20°C à 45°C) seulement. Charger la pile lorsque la température est
comprise entre 41°F et 104°F (5°C et 40°C) seulement.

20
ACCESSOIRES
Pochette des écouteurs Séparateur audio de 3,5mm pour permettre des connexions
séparées pour le microphone et le casque analogiques
Câble de chargement USB-C vers USB-A
Câble USB-C vers câble 3,5mm Micro perche
Housse en mousse pour micro perche en option pour réduire
les sons «pop» et protéger le microphone
Adaptateur à faible latence