Master & Dynamic MH40 User Manual

USER MANUAL — MH40 OVER EAR HEADPHONES

1

SOUND TOOLS FOR CREATIVE MINDS

Our obsession is the interaction between sound and creativity.
Our passion is building beautifully designed, technically
sophisticated sound tools for creative minds.

Our MH40 Over Ear Headphones are designed to be the modern
thinking cap, a tool to help you focus and tune into your work
while tuning out the world around you.

DESIGNED FOR DECADES OF USE

Our headphones are designed to be an essential part of your
everyday creative toolkit that can stand up to decades of use.
They are built with the creative workspace in mind, intended as
a permanent fixture on your desk, workbench, or table.

Our headphones are constructed of a forged aluminum body, and
utilize stainless steel components in all high strain areas. Areas
subject to heavy wear, such as cables and ear pads, are built to last
and be easily replaced as needed. All metals are anodized or PVD
coated, not painted. We separated the microphone from the remote
for increased vocal clarity and reduced noise, removing the need to
hold the remote while you speak on the phone.

APPOINTED WITH THE FINEST MATERIALS

Our headbands are constructed with a premium grain cowhide on
the exterior surface and lined with a soft lambskin. The ear pads
are memory foam, wrapped in lambskin, providing superior comfort
and breathability.

Our heavy-duty woven cables utilize oxygen-free copper to ensure
pure sound and reduced noise. All headphones include a genuine
leather box to store your extra cables and accessories, as well as
a canvas carrying case with a soft interior lining.

A RICH, WARM SOUND

We sought a rich, warm sound signature from our custom 45mm
neodymium drivers. An expansive soundscape that perfectly
captures the exceptional detail that well recorded music has to
offer. Our tuning is designed to accommodate a diversity of tastes
and musical genres.

OVERVIEW

1

Premium Grain
Leather Headband
with Lambskin Interior

2

Removable/Replaceable
Memory Foam Ear Pads
with Lambskin Covering

1

5

2

3

4

10

L

R

9

6

7

8

3

Forged Aluminum Body

4

Audio Input /Output:

3.5mm Cable Jack

5

Adjustment Post

SPECS

DIMENSIONS

200mm x 185mm x 50mm

WEIGHT

360g

SOUND PROFILE

Dynamic, Closed

Stainless Steel Components

6

including: Earcup Harness,
Hinge, Adjustment Post

Mute Button (Press

7

in to mute. Press again
to unmute)

Premium Leather Inlay

8

Audio Input /Output: 3.5mm

9

Cable Jack for Audio Sharing

Magnetized Ear Pads

10

IMPEDANCE

32 ohms

DRIVERS

45mm Neodymium
High-Performance
Drivers

MIC AND REMOTE

M&D

M&D

M&D

M&D

M&D

M&D

M&D

The microphone is separated from the remote
and placed closer to your mouth for increased
vocal clarity and reduced noise.

Remote for use with Apple products.

ACCESSORIES

Canvas
Headphone
Case

M&D

Headphone Plug

3.5/6.3mm
Gold-Plated Adapter

volume up

press 1x | to answer a call, or to hang up
press 1x | to play or pause audio
quickly press 2x | to skip forward
quickly press 3x | to skip backward

volume down

Leather
Cable Box

Source
Plug

Headphone Plug

Source
Plug

Cable 01: 1.25m Cable

with Remote & Mic

Cable 02: 2.0m

Straight Cable

ADJUSTABILITY | FIT | COMFORT

Earcups fold flat for storage.

Adjust earcup post
to find optimal fit.

CHANGING/REMOVING EAR PADS

XXXXXXXXXXXX

No.MH40

AUDIO SHARING

Serial Number

RIGHT EARCUP

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

M&D

M&D

We designed our headphones
with a 3.5mm input /output on
both earcups. You can connect
your source into either earcup.

M&D

M&D

If you wish to share your
listening experience, simply plug
another pair of headphones
into the available earcup jack.

MAINTENANCE AND TROUBLESHOOTING

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 case 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.

No Sound:

•

Check to make sure all plugs
are fitted completely into their
jacks, both in the headphones
and at the audio source.

•

Check source device to make
sure sound is coming out.

•

Check cable for signs of
extreme wear or test another
cable to see if cable is damaged.

•

Check to make sure Mute
Button is disengaged.

Remote not working:

•

Check to ensure that source
plug is inserted into audio
device and headphone plug is
inserted into earcup.

HEARING HEALTH AND FITNESS

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 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.

If your co-workers (3 – 10 feet away) are always singing along or
commenting on your music choices, chances are good you may be
listening too loud. See an audiologist to have your hearing tested.

If you are interested in tuning your ear to have a more refined
sonic palate, there are some apps and training programs you can
find online.

PREVENTION OF NIHL (NOISE INDUCED HEARING LOSS)

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 AND 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 from an authorized Master & Dynamic retailer
or reseller. Master & Dynamic will either repair or replace the
defective product at our discretion if the product is returned within
the warranty period.

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 does
not cover normal wear and tear, blown drivers, cut cords,
bent jacks, torn headbands, loss or theft. You will void this
warranty if you disassemble your headphones or expose them
to excessive moisture.

If you believe this product is defective within the warranty period,
contact us via our support page at www.masterdynamic.com/support.
Once your warranty is verified, you will be issued a return
authorization and instructions for return shipment. Proof of
purchase may be required. Products with unreadable or removed
serial numbers will not be covered.

For questions regarding your product’s warranty, contact
Master & Dynamic Support at [e-mail].

MH40-M-051614

The r emote and mic a re suppor ted only by iP hone 3GS or l ater, iPad, iPo d touch (2n d gener ation or la ter),
iPod c lassic (12 0GB, 160GB) , and iP od nano (4th gen eration or l ater). The r emote is sup ported by i Pod
shuf fle (3rd ge neration o r later). Aud io is suppor ted by all iPa d and iPod mod els.

“Mad e for iP od,” “Made fo r iPhone,” and “ Made for iP ad” me an that an ele ctronic a ccessor y has been
desig ned to conne ct specif ically to i Pod, iPho ne, or iP ad, respe ctively, a nd has been ce rtifie d by the
deve loper t o meet Appl e perform ance stan dards. Ap ple is not re sponsible f or the oper ation of thi s device
or its c omplianc e with safe ty and reg ulat ory stand ards.

Designed and Developed by New Audio LLC
New York, NY 10001. Made in China.

© Copyright 2014 New Audio LLC. All rights reserved. Master & Dynamic,
the Stylized M logo and Sound Tools for Creative Minds are trademarks
of New Audio LLC. Patents Pending.

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