When comparing AKG K391 NC vs SteelSeries Siberia 840, 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 SteelSeries Siberia 840 is ranked 134th. 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 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 passive noise isolation
The ear cups feature a closed design which blocks outside noise. People near you won't hear the in-game audio while you're wearing these.
Pro Compatible with other gaming platforms
This is versatile gaming headset works with PC, Xbox One and a host of other devices.
Pro Boom mic is easy to position
The microphone is flexible and can easily be bent or angled as preferred. If not in use, the mic can be pushed into the ear cup so it won’t get in the way.
Pro Syncs with Engine 3 software
You can adjust the various settings of the Siberia 840 on your computer via Steelseries’ Engine 3 app. You get more fine tuning options compared to what the base station can provide, and you’ll also be able to set and sync audio profiles with your other Steelseries devices, allowing on the fly audio changes depending on the inputs to your Steelseries mouse and/or keyboard.
Pro Wireless connection is fast and stable
The range and stability of the wireless connection is very good. The signal remains stable with clear audio even if the headset is more than 30 feet away from the base. There is also no noticeable delay between what is happening on screen and when you hear the audio.
Pro Bluetooth connectivity
You can connect this headset to your smartphone/tablet and other Bluetooth capable audio devices, which is a major upgrade over the old 800 model. This allows you to take calls from your phone and improves device compatibility, and are perks that you may find to be very useful.
Pro Rich and lively sound
This headset has a fun sound signature. The highs are slightly boosted, which helps make the audio sound very airy. The enhanced bass makes explosions quite powerful and immersive. The mids, while not forward, are present and give body to the audio.
Pro Unique charging system
The Siberia 840 comes with a spare battery pack in addition to the one already provided. The spare battery can be charged independently in the base station, so you can use the headset while the other battery pack charges. Swapping from one battery to another is also quick and easy to do.
Pro Great sounding wireless headset with a lot of connectivity options and a unique charging system
This headset's wireless connection (both RF and Bluetooth) is stable and the sound is detailed and powerful. The base station also accepts a variety of analog and digital inputs, making this a very versatile headset. It also has a long battery life complemented by a charging system that allows you to charge one battery pack while using the other.
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 Charging system can be inconvenient for some
While the charging system and the inclusion of two batteries is a unique and innovative feature, it can also be an inconvenience. You can’t charge the battery while the headset is in use, which can be an issue if you forget to charge your spare battery while the other one is in use. This can also be a problem when you lose headset power mid-game and you need to swap out batteries.
Con Subpar mic volume
While the voice quality from the mic is great, the volume is rather weak. This can make it a little more difficult for teammates to hear your voice.