When comparing AKG K391 NC vs Razer Man O' War, the Slant community recommends Razer Man O' War for most people. In the question“What are the best headphones?” Razer Man O' War is ranked 27th while AKG K391 NC is ranked 61st. The most important reason people chose Razer Man O' War is:
Razer's Synapse application gives users a lot of features to tweak and control. Some features that can be controlled via this software includes EQ, 7.1 surround sound, RGB lighting settings and many more.
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 Razer Synapse gives a lot of control over headset features
Razer's Synapse application gives users a lot of features to tweak and control. Some features that can be controlled via this software includes EQ, 7.1 surround sound, RGB lighting settings and many more.
Pro Customizable RGB lighting
Each ear cup features the Razer logo and has RGB lighting underneath. Users can customize the light color and glow patterns of the logo, and sync them with other Razer peripherals if desired.
Pro Features an integrated, retractable microphone
The mic can be pushed in or pulled out of the headset as needed. The mic is also flexible, allowing a user to bend the mic to the desired position.
Pro Comfortable to wear even for long gaming sessions
The ear pads feature thick foam cushioning. Combined with the use of supple faux leather on the ear pads' surface, the headset is great to wear for long gaming sessions, as it is less likely to cause pain on the ears/side of the head.
Pro Will not put a lot of strain on the head or neck
A lot of plastic is used in the construction of this headset, including the head band and the headset's yoke. This makes the headset quite lightweight despite being large, so this is not too tiring to wear, even for long gaming sessions.
Pro Great highs and okay levels of bass, mids are slightly recessed
The highs are what make this headset sound good. They are slightly boosted yet are not harsh, which results in a lot of detail.
Bass reproduction is okay. While there is not a lot of bass rumble and punch, the bass is present enough to prevent the sound from being too lean.
The mids are slightly recessed though, so some movie or in-game dialogue can be a little more difficult to hear, especially when there are a lot of explosions and similar sound effects present.
Pro Sound quality from the mic is great
Audio from the mic is clear without too much distortion. Also, it doesn't sound tinny like most integrated mics do, so teammates will clearly hear your voice. The mic also has great noise cancelling properties, so button/keyboard presses or mouse clicks will be near-inaudible.
Pro Responds very well to EQ adjustments
The sound can be substantially changed via EQ adjustments so you should be able to easily dial-in the sound that you want to get.
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 This is a bulky headset
The ear cups are large and thick. The headband is also pretty large, and is comprised of a number of plastic pieces. This will look quite big on the head and will most certainly take a lot of space on your desk.
Con Wireless connectivity only
This can only connect to a sound source via a wireless connection. Compatibility of this headset is limited to a PC or Mac and the PS4.
Con The headset feels cheap and flimsy
The Man O' War is made primarily of plastic parts. This can make the headset feel cheap and flimsy as the product, specifically the headband and ear cups, flex easily and make a lot of creaks when held or moved.