Packaging data
| Audio adapters included |
Flight |
| User guide |
Y |
| Carrying case |
Y |
Headphones
| Impedance |
32 Ω |
| Headphone sensitivity |
107.5 dB |
| Ear coupling |
Intraaural |
| Headphone frequency |
12 - 24000 Hz |
| Acoustic system |
Closed |
Design
| Wearing style |
In-ear |
| Headset type |
Binaural |
Additionally
| Wireless technologies |
Wired |
K391NC, 12Hz - 24kHz, 32 ohms, 500mW, 8g
<b>Active noise cancellation for pure AKG sound quality.</b>
AKG K391 NC in-ear headphones turn mayhem into a private concert or screening. Compact and easy to travel with, these noise-canceling headphones will make a crowded airplane, subway or plaza seem downright peaceful, while delivering powerful sound directly to your ears. A premium hard case is included to protect your iPhone or iPod when you’re on the go, and an in-line microphone lets you answer a call as easily as listening to a song. Lightweight and comfortable, these in-ear headphones deliver the detailed, studio-quality sound that AKG engineering has provided top musicians for over 65 years.
<b>Famous AKG® sound quality</b>
For over 65 years, AKG Acoustics has been the leader in creating studio sound in headphones. We hold over 1,400 patents for our groundbreaking products; and two TECHNICAL GRAMMY® Awards (2010, 2005) for sound innovation.
<b>Active noise cancellation</b>
Tiny microphones on the outside of each of the earpieces detect the difference between the sound the K391 NC headphones are delivering and the sound coming from the world around. Noise-canceling technology then creates exact waveforms to negate the unwanted noise, so that all you hear is the desired music or audio.
<b>40-hour play time</b>
The battery used to power the active noise cancellation in the K391 NC headphones will last up to 40 hours. And the battery is easily rechargeable via a USB port, making recharging convenient in airports, planes and other locations with USB recharging stations. Two cables for different phone models are included.
<b>Closed-back design</b>
K391 NC headphones keep music in and noise out. Their closed-back design helps attenuate ambient noise while also preventing the sounds that you’re hearing from leaking out.
<b>In-line microphone and remote control</b>
K391 NC headphones have an in-line microphone, so you can make calls that are every bit as crisp and noise-free as the music you listen to on your smartphone. The mic is ideal for FaceTime, Skype™ and virtually any application requiring a microphone. The three-button remote lets you control the playback functions and volume from iPhone and iPad devices, as well as Apple laptops and desktop computers.
<b>Premium hard case for iPhone</b>
Your iPhone is an on-the-go audio source. K391 NC headphones come with a premium hard case to protect it from all the bangs and bumps of an active day. That way, your iPhone is as protected from the outside world as your ears are from outside noise.
<b>Flight adapter</b>
When it comes to audio quality, courtesy airline earphones aren’t much of a courtesy. K391 NC headphones come with an adapter that makes them compatible with nearly every airline, so that you can enjoy in-flight entertainment with AKG sound quality.
