When comparing Shure SRH440 vs AKG K391 NC, the Slant community recommends AKG K391 NC for most people. In the question“What are the best headphones?” AKG K391 NC is ranked 61st while Shure SRH440 is ranked 79th. The most important reason people chose AKG K391 NC is:
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.
Specs
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Pros
Pro Reference quality sound which can be fun to listen to
Sound signature is fairly neutral, with slight elevations to the bass, mids and highs.
Bass has a nice fullness to it, with some extra depth which gives the sound a lot of body.
The mids are neutral but slightly forward, making the vocals sound really clear. Aggressive guitars can sound a bit harsh because of this though.
Treble has good extension, and the added peak on the highest frequencies add more sparkle to the sound.
Overall, these headphones can be used both for critical listening and for casual music enjoyment as well.
Pro Superb sound isolation
The closed back, over the ear design blocks out a significant amount of noise, allowing users to easily focus on the audio. Sound leak is also kept to a minimum.
These are great for tracking and monitoring, and are also great choices for use in quiet environments like a library.
Pro Headphone cable is detachable
You can easily remove the cable when these are not in use, making them easy to store. This also makes the cable easy to replace when needed.
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.
Cons
Con Build quality is rather poor
The overall build is quite plasticky, with a lot of rattles. While it is not fragile by any means, the build quality certainly does not inspire confidence.
Con Ear pads are not the most comfortable
Pleather is used on the surface of the ear pads which traps heat and can make the area around the ears warm up fast. Also, while the ear pads are large and soft, they are also quite thin. People with larger ears may experience their ears rubbing against the driver housing, which can get quite uncomfortable.
Con Thin headband padding
There is minimal cushioning on the headband, so the plastic may dig into your head when using the headphones for long periods.
Con Limited inline controls
The inline remote only allows you to play, pause, and skip tracks. You can’t control volume levels though.