MASTER DYNAMIC MH40 Wireless Over Ear Headphones User Manual

MASTER DYNAMIC MH40 Wireless Over Ear Headphones

Product Information

The MH40 Wireless Over-Ear Headphones from Master & Dynamic are a premium audio product designed with a modern yet timeless look. The headphones feature replaceable memory foam and lambskin ear pads, a premium coated canvas headband with lambskin interior, and forged and machined aluminum components throughout. The headphones also have dual microphones, 40mm titanium high- performance drivers, and a USB-C input for audio and charging. The headphones weigh 280g/9.8oz and have an impedance of 32 Ohms. The dimensions of the headphones are 205mm x 202mm x 71mm.

Product Usage

Adjustability, Fit, and Comfort: The MH40 Wireless Over-Ear Headphones have an adjustment arm that allows you to adjust the fit of the headphones. The premium coated canvas headband and replaceable memory foam and lambskin ear pads provide comfort during extended use.

Functions: The headphones have a multifunction button that can be used to play/pause music, answer/end calls, skip forward/backward, mute/unmute calls, and activate voice assistants. The volume can be adjusted using the vol + and vol – buttons.

Power/Pairing: To power on/off the headphones, press the power/pairing button. The battery level will be displayed at startup. The headphones will enter pairing mode when powered on for the first time, or you can manually activate pairing mode by holding the power/pairing button for 4 seconds. To conserve battery power, the headphones will power off after 30 minutes of inactivity.

Charging: To charge the headphones, use the USB-C to USB-C cable for charging and digital audio. The headphones come with a USB-C to 3.5mm cable and a flight adapter. The white light on the right earcup will pulse when the headphones are in pairing mode and will be solid white when connected. The light will indicate high, medium, or low battery level.

Accessories: The headphones come with a headphone pouch, USB-C to USB-A adapter, and replacement ear pads. The ear pads are magnetized for easy removal and replacement. To replace the ear pads, simply grab the outside ring of the ear pad and remove it. Reattach the ear pads by aligning the two guide posts on the earcup with the two guide holes on the inside of the
ear pad.

Troubleshooting: If you have trouble pairing the headphones with your device, ensure that the headphones are not connected to the charger and cycle the power switch off and on. Turn off Bluetooth on the source device and turn it back on again. Also, turn off Bluetooth on any other device that is paired with the headphones, as it may obstruct the signal. If you encounter issues with audio quality, try another music application or track and try a different audio device.

Master & Dynamic is a New York City-based premium audio company with a deep passion for building beautifully crafted, 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.

OVERVIEW

1. Premium Coated Canvas Headband with Lambskin Interior
2. Replaceable Memory Foam and Lambskin Ear Pads
3. Adjustment Arm
4. USB-C Input Audio and Charging
5. Forged and Machined Aluminum Components Throughout
6. Dual Microphones

SPECS

DIMENSIONS
205mm x 202mm x 71mm

WEIGHT
280g / 9.8oz

BLUETOOTH PROFILE®
Bluetooth® 5.2 with AAC, SBC, and aptX Adaptive up to 24-bit 96kHz and Multipoint Connectivity

IMPEDANCE
32 Ohms

DRIVERS
40mm Titanium High-Performance Drivers

ADJUSTABILITY, FIT AND COMFORT

FUNCTIONS

POWER ON
Press Power/Pairing button once to power ON/OFF. Battery level will be displayed at startup. Before listening, charge your headphones for at least 15 minutes and download the M&D Connect App to check for firmware updates. To conserve battery power, headphones will power OFF after 30 minutes of inactivity. This setting can be adjusted in the M&D Connect app

CHARGE
To charge, plug in the USB-C Connector.

NOTE : You can still use the headphones via Bluetooth while charging

A solid orange light indicates charging and a solid green light indicates a full charge when the USB cable is connected.

PAIRING

The first time you power ON your headphones they will enter pairing mode. Simply connect through the Bluetooth menu on your device and select M&D MH40W. To manually activate pairing mode, hold Power/Pairing button for 4 seconds

Pairing to 2 or More Devices

1. Enter pairing mode and connect to device 1.
2. Enter pairing mode again and device 1 will disconnect.
3. Connect to device 2 and turn headphone OFF.
4. Turn headphone ON and headphone will automatically connect to device 1 and 2 simultaneously.
5. Pause one device and play from the other to swap headphone connection.

ACCESSORIES

REPLACING EAR PADS

Ear pads are magnetized for easy removal/replacement. Simply grab the outside ring of the ear pad and remove. Reattach ear pads by alligning the two guide posts on the earcup with the two guide holes on the inside of the ear pad.

TROUBLESHOOTING

TROUBLE PAIRING HEADPHONES AND DEVICE

The headphones and device do not pair:

1. Make sure the headphones are not connected to the charger. 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 > 4 seconds to enter pairing mode.
5. Make sure “M&D MH40W” is selected in the Bluetooth® device list No audio or poor audio quality from a connected Bluetooth® device:
6. Move the device closer to the headphones, physical objects between the headphone and the source may obstruct the signal.
7. Try another music application or try another track.
8. Try a different audio device.

**FACTORY RESET***
Power OFF the headphones. Hold power/pairing button > 4 seconds until pairing indicator begins to flash. Hold down the multi-function button (the button between Vol+ and Vol-). The headphones will then be reset.

MAINTENANCE

Clean ear pads and headphones with soft, slightly damp cloth. Do not soak, submerge or allow moisture to enter near the drivers or cable jacks. Ear pads and cables can be purchased if they are worn out at: www.masterdynamic.com Do not drop, sit on, or allow the headphones to be exposed to water, moisture, or temperature extremes. 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 canvas case along with your headphones.

CAUTION : Incorrectly rotating or over rotating the earcups 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

Over time, your headphones will accumulate a list of devices and may take longer to pair than anticipated. A factory reset can help speed up this process by forgetting the list of previously connected devices.

PREVENTION OF NOISE-INDUCED HEARING LOSS

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 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 sounds louder than 110 decibels and extended exposure to 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).

WARRANTY + CUSTOMER SERVICE

Master & Dynamic guarantees this product against defects in materials or workmanship for a period of one year from the date of original purchase on our website or from an authorized Master & Dynamic retailer or reseller. Batteries are also 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 headphones due to a battery defect, your earphones will be new or equivalent to new in performance and reliability. You will void your warranty if you disassemble your headphones or expose them to excessive moisture. If you believe your product is defective within the warranty period, please contact us at support@masterdynamic.com. 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 support@masterdynamic.com.

References

• Professional Headphones & Luxury Earphones | Master & Dynamic Official

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