AKG K391 NC Installation and operation manual

AKG®K391 NC in-ear headphones turn a noisy space into a
private concert or screening. Compact and easy to travel with,
these noise-cancelling, in-ear headphones will make anything
from a crowded airplane to a subway seem downright peaceful
while delivering powerful, detailed sound directly to your
ears. We’ve included a premium carrying bag, and an in-line
microphone allows you to answer calls.
Solitude
•True AKG sound performance
•Active noise cancellation
•35-hour playing time
•Closed-back design
Magnitude
•In-line microphone
•Carrying bag
•Flight adapter
•Frequency range: 12Hz to 24kHz
K391 NC
HigH-performance, noise-cancelling in-ear HeadpHones witH
in-line micropHone and digital active noise cancellation
Block noise, experience Beauty.

key features
The batteries that power the active noise cancellation
in the AKG K391 NC will last for 40 hours at a time.
And the battery is easily rechargeable via a USB port,
making recharging convenient in airports, planes and
other locations - just plug it into your laptop. Two
cables for different phone models are included.
For 65 years, AKG Acoustics has been the leader in
creating studio sound in headphones. We hold more
than 1,400 patents for our groundbreaking products;
and in 2010, we were awarded a GRAMMY®for
technical achievement.
Tiny microphones on the outside of each earpiece
enable the AKG K391 NC headphones to detect the
difference between the sounds that they’re playing
and the sounds coming from the world around them.
The AKG K391 NCs then create exact waveforms
to cancel out the unwanted noise, so all you hear
is the music or audio being fed to you through the
headphone jack.
AKG K391 NC in-ear headphones keep music
in and noise out. Their closed-back design helps
impede outside noise from entering your ears while
also preventing the sounds you’re hearing from
leaking out for the outside world to hear.
AKG K391 NC in-ear headphones have an in-line
microphone that lets you make calls that are every bit
as crisp and noise-free as the music you listen to on
your smartphone.
active noiSe cancellation 35-hour playing tiMe
cloSed-bacK deSign in-line Microphone
K391 NC
Travel to your own theme song.
Nothing slows down the listening process
like having to undo a twisted Gordian knot
of headphone cord. AKG K391 NC in-ear
headphones come with a carrying pouch so
you can store them safely and snugly without
their ever becoming an unruly ball
of tangles.
Few things make travel more tedious than trying
to watch an in-ight movie with courtesy airline
earphones. AKG K391 NC in-ear headphones come
with an adapter that makes them compatible with
nearly every airline allowing you to fully enjoy in-ight
entertainment in AKG-quality sound.
Flight adapter
FaMouS aKg®Sound quality
carrying bag

specifications
K391 NC
Specs that would impress even the toughest critics.
© 2012 HARMAN International Industries, Incorporated. All rights reserved.
AKG is a trademark of AKG Acoustics GmbH, registered in the United States and/or other countries. GRAMMY is a registered trademark of The Recording Academy and is used under license.
iPhone and iPod are trademarks of Apple Inc., registered in the U.S. and other countries. iPod/iPhone not included.
Features, specications and appearance are subject to change without notice.
www.akg.com
HARMAN International Industries, Incorporated.
8500 Balboa Boulevard, Northridge, CA 91329 USA
AKG Acoustics GmbH, Lemböckgasse 21–25, 1230 Vienna, Austria
Go online access professional tips that’ll show
you just how serious sound can get.
www.akg.com
What’s included:
• 1 set of AKG K391 NC in-ear headphones
• 1 premium carrying bag for iPhone
• 2 cables for different smartphone models
• 1 ight adapter
• Warranty card
key specifications
System: Dynamic
Design: Closed-back
Color: Silver/black
Frequency range: 12Hz – 24kHz
Sensitivity: 107.5 dB SPL/V (passive),
115 dB SPL/V (active)
Driver impedance: 32 ohms
Maximum input power: 500 mW
Net weight (without cable): 8g (0.3 oz)
Cable: 99.99% oxygen-free cable, 3' 9" (1.15m)
to NC module, 1' 8" (0.5m) from dongle to
plug (detachable)
Main connection: 1/8" (3.5mm) stereo mini-jack plug
Battery life: 35h