Audio-Technica ATH-M50x vs AKG K391 NC

The ATH-M50x are great sounding headphones with a sound that may fall in the neutral category, but with very slight boosts to the bass and highs; a slightly V-shaped sound. The bass is full and has a lot of power. The sub bass has a hint of elevation though, which can make the bass sound a bit loose on hip-hop or EDM tracks. The mids are fairly neutral with no elevation. The highs are also slightly elevated, which does not add harshness but instead gives the sound a shimmery and detailed feel.

This sound signature of the M50x makes it versatile. It is neutral enough for monitoring use, yet also has just the right qualities to make it a great choice for enjoying music.

The bass of these headphones sound full with a slight boost. This makes the bass quite punchy without drowning the mids or highs.

You get a lot from what you pay for with these headphones. Aside from the great sound, they are also well built and come with a lot of accessories.

The ATH M50x is made from high quality matte plastics which are quite resistant to damage without being too heavy. The hinges move smoothly and do not have unnecessary creaks.

Audio-Technica finally updated the M50's built in cable to a detachable cable. The M50x even comes with three cables, a 1.2 m - 3.0 m coiled cable, a 3.0 m straight cable, and a 1.2 m straight cable. None of the cables have in-line controls though.

The ear cups and pads are able to keep the sound in and block outside noise. These are suitable for a noisy office as even low volume music is enough to drown out those noisy office mates.

The ear cups can be folded into the headband, reducing its footprint. Combined with the carrying pouch and detachable cables, you can easily chuck these headphones into your bag when going out.

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.

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.

You can take calls with these headphones on. A microphone is integrated into the remote which makes answering calls fast and convenient.

A good amount of noise will be blocked from mixing in with your music. Loud, low-pitched sounds may still be clearly heard though

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.

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.