When comparing AKG K391 NC vs Bose QuietComfort 25, the Slant community recommends Bose QuietComfort 25 for most people. In the question“What are the best headphones?” Bose QuietComfort 25 is ranked 19th while AKG K391 NC is ranked 61st. The most important reason people chose Bose QuietComfort 25 is:
The traveling case is small and provides room for spare batteries and other components. This makes it pretty portable, for those that can't or don't want to leave their headphones at work.
Specs
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Pros
Pro Good accessory bundle
The accessories included are all very useful. You get two 3.5mm headphone cables, a USB charging cable, silicone ear tips, a travel pouch and an airplane adapter.
Pro The headphone cable can be detached from the control module
You can easily replace the 3.5mm cable should it get damaged. You can detach the 3.5mm cable from the control module which is very convenient. Other noise cancelling modules have fixed cables, so you’ll have to replace the headphones should the cable get damaged.
Pro Integrated microphone
You can take calls with these headphones on. A microphone is integrated into the remote which makes answering calls fast and convenient.
Pro Decent active noise cancelling
A good amount of noise will be blocked from mixing in with your music. Loud, low-pitched sounds may still be clearly heard though
Pro Compact noise cancelling module
You aren’t likely to have issues using these on the go. Most active noise cancelling in-ear headphones have large control modules, while the K391NC has a fairly compact and light module. You can easily use these headphones while walking and comfortably enjoy active noise cancelling with your music.
Pro Fairly detailed and rich sound
The highs are quite detailed, yet do not get harsh. The mids are slightly forward, so vocals and instruments can easily be heard. The bass is not very powerful but is tight, so you’ll get decent punch from your music.
Pro Good portability
The traveling case is small and provides room for spare batteries and other components. This makes it pretty portable, for those that can't or don't want to leave their headphones at work.
Pro Battery is easily replaceable
These headphones use a triple-A battery to power noise canceling. Should it run out of charge, it can easily be replaced.
Pro Active noise canceling is very good
With the feature switched on, you can really zone in on the music. Noise canceling is very effective at blocking out ambient noise, especially the lower frequencies. On a flight for example, engine noise is drastically reduced, as well as most of the sound from the conversations in your vicinity.
Pro Plenty of comfort features
The QC25 feels comfortable even after wearing it for several hours. The pads go over the ear and feel soft, as the ample cushioning is covered with supple and high quality synthetic leather. Aside from the usual headband padding, it also has an inner Alcantara lining that feels really nice on the skin.
Pro Noise canceling levels can be adjusted
You have a number of options as to how you want to use these headphones' active noise canceling feature. You can either have the feature on or off while you are listening to music, or have noise canceling on without audio. This is a nifty feature if you just want to enjoy some peace and quiet when in a noisy place.
Pro Light and easy to wear
These headphones will not tire your head or neck out, even if you wear them for quite some time. These are pretty light at around 196 grams.
Pro Fun sound with boosted highs
Sub-bass is a bit laid back, but the overall low-end production is punchy and with good extension. Mids are clear and forward so vocals, guitars and keys sound good with these. The upper treble is boosted, which results in good detail, but can also give harshness to the sound.
Overall, this is a really fun set of cans to listen to, especially if you just want to have a fun music listening experience.
Cons
Con Limited inline controls
The inline remote only allows you to play, pause, and skip tracks. You can’t control volume levels though.
Con Audio has not enough power on some phones
Takes a lot of power for volume. Not all phones have enough audio output to reach high volume.
Con High frequency noise may still mix with audio
While low frequency sounds are effectively blocked, high frequency ones can still be heard. Female voices and high pitched noises may still get in the way of your music.
Con No noise canceling auto shut-off
The feature continues to drain battery even if the headphones are not used. Turn this off before storing.
Con Noise canceling is uncomfortable for some users
A number of users complain about the headphones' noise canceling having a feeling of pressure in the ears, which they find to be quite uncomfortable.