AKG K391 NC User 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.

AKG K391 NC Specifications

Sound Specifications

frequency range	12Hz – 24kHz
sensitivity (passive)	107.5 dB SPL/V
sensitivity (active)	115 dB SPL/V
driver impedance	32 ohms
maximum input power	500 mW

Physical Attributes

net weight (without cable)	8g (0.3 oz)
cable length to NC module	3' 9" (1.15m)
cable length from dongle to plug	1' 8" (0.5m)
main connection	1/8" (3.5mm) stereo mini-jack plug

Battery

battery life	35h

Summary

Key Features

Famous AKG Sound Quality

Highlights AKG's legacy and awards in creating studio sound in headphones.

Active Noise Cancellation

Explains how external microphones detect and cancel ambient noise for immersive audio.

35-Hour Playing Time

Details the long battery life for active noise cancellation and easy USB recharging.

Closed-Back Design

Ensures music isolation and prevents sound leakage for private listening.

In-Line Microphone

Provides crisp and noise-free calls directly from the headphone cable.

Carrying Bag

Includes a pouch for safe and tangle-free storage of the headphones.

Flight Adapter

Enables compatibility with airline audio systems for in-flight entertainment.

Specifications

Key Specifications

Details technical aspects including system, design, frequency range, impedance, and battery life.