Quantum 800: Amazon.com: JBL Quantum 800 – Wireless Over-Ear Performance Gaming Headset with Active Noise Cancelling and Bluetooth 5.0

JBL Quantum 800 review – SoundGuys

It’s pretty rare when a new company gets into gaming headsets. This is already a pretty saturated market, with a lot of established players offering great products for even the most modest budgets. Launched last summer, JBL’s Quantum line looks to shake things up and offers variously premium features for less than a company like Razer, HyperX, or SteelSeries will charge.

The JBL Quantum 800 brings features you’d expect of the most expensive devices on the market, for considerably less. Does it make the right tradeoffs?

Editor’s note: this JBL Quantum 800 review was updated on December 8, 2021, to update the scoring per our reader poll and address the JBL Quantum 350 as an alternative.

Who should get the JBL Quantum 800?

  • Gamers who want a full-featured gaming headset that can cover all the bases.
  • At-home workers looking for something comfortable to wear all day that can cover their conferencing needs.

What is it like to use the JBL Quantum 800?

You set separate colors for the LEDs in the JBL logo and the ring around the headphones.

If there’s one thing immediately apparent about the JBL Quantum 800, it’s that there is a lot going on with this headset. By and large, gaming headsets are meant to simplify audio needs, and frankly, this is pushing it. Nonetheless, there’s a lot to like.

The JBL Quantum 800 is a wireless gaming headset compatible to varying degrees with PC, PlayStation 4, PlayStation 5, Xbox One, Nintendo Switch, mobile, and more. It’s built of mainly plastic, but it’s pretty hefty for a gaming headset. The headset features a two-hinge setup, which offers a nice degree of tilt to accommodate different head shapes, and lets the headset lay flat as well.

Leatherette-wrapped memory foam cushions cover the headband and ear cups—they’re very thick and very comfortable. Something like velour would be better for people with glasses, but these are soft and thick, and achieve a decent seal without issue.

This button layout is a big part of what makes using the headset frequently frustrating.

However, while this headset is without a doubt very solidly built, actually using it is a little less stellar. The JBL Quantum 800 boasts a very large stable of features for a gaming headset. For starters, it’s wireless, using both Bluetooth and a USB dongle. It also features two kinds of surround sound, active noise canceling, customizable LEDs, a TalkThru function (which quiets the audio and turns on mic monitoring so you can hear your surroundings better), and separate game and chat channels.

Most of the headset’s features are controlled by two dials and three buttons, the bulk of which are clustered together on the back of the left headphone. There’s a volume dial, a game/chat mix dial, a mic mute button, and a noise canceling button. They’re all in a row, and none feel particularly unique, which is to say: it’s very easy to get them mixed up.

The Quantum 800 supports wireless audio via Bluetooth and its 2. 4GHz RF adapter.

You can activate the TalkThru feature with a quick tap to the ANC button, and it’s very easy to enable this by accident while you fumble around with the controls. I often accidentally made whatever I was playing or watching very hard to hear because of this.

The game/chat mix and volume dials are virtually identical and right next to each other. I tried to keep the mix pretty even, which meant when I inevitably got them mixed up, it would take a couple seconds of adjustment to realize I was changing the wrong setting. It’s very easy to think you’re increasing overall volume, when you’re really just making the people you’re chatting with harder to hear. On top of all that, the addition of a mic mute button frankly doesn’t make a lot of sense—the mic already mutes when you flip it up, and the button just further clutters an already cluttered interface.

Should you get the JBL QuantumENGINE app?

QuantumEngine offers a lot of features, but its layout is a little cluttered, especially given how much space is given to decorations.

The JBL QuantumENGINE app is necessary if you want to use either included surround sound standard, customize the LEDs, or just have a more visual interface for controlling everything. However, QuantumENGINE is pretty clunky, much like most gaming headset software, and seems to spend as much screen space on visual flourishes or meaningless visualizations as actual features. Of course, you can also change all the settings controlled by the buttons and dials on the headset in the software too.

How does the JBL Quantum 800 connect?

When connected wirelessly, the JBL Quantum 800 offers both a Game channel and a chat channel, the latter of which sounds notably worse for some reason.

This wireless gaming headset works a lot like other wireless gaming headsets, in that it connects primarily using a 2.4GHz USB wireless RF dongle. Through this method, it’s compatible with PC, Playstation 4, PlayStation 5, and Nintendo Switch (when it’s docked). If you want to game on an Xbox One or a Nintendo Switch that’s undocked, the headset also includes a detachable 3. 5mm cable for wired gaming (PS4 and PS5 also support 3.5mm connections).

Learn more: Understanding Bluetooth codecs

Additionally, the JBL Quantum 800 supports Bluetooth 5.0 for connections to mobile devices and whatever else can support it. The headset supports AAC and SBC codecs, so unfortunately Android users won’t have access to reliable high-quality codecs like LDAC or aptX and its varieties. However, this does support simultaneous connections, so you can connect to your PC via USB and your phone via Bluetooth and hear audio from both without interruption.

How long does the JBL Quantum 800 battery last?

At least when the battery runs out, you can still use a 3.5mm connection (although the ANC won’t work until you charge it again).

JBL claims the headset can last 14 hours on a single charge of playback with the LEDs off, which is largely consistent with our test results. With LEDs, surround sound, and ANC switched off the JBL Quantum 800 can last up to 14 hours, 13 minutes of consistent playback. If you listen at a lower overall volume than 75dB(SPL), you might find you get better results than us, but all the settings we turned off have a pretty significant effect on performance. With everything turned on, don’t be surprised if you barely crack 5 hours.

Read on: Can headphones be sustainable?

Is the JBL Quantum 800 good for gaming?

Given how much the software adds, this is really meant for gaming on a PC.

Playing games with the JBL Quantum 800 is complicated by pretty much everything I mentioned above. This is a really comfortable gaming headset, and it’s great for long sessions. Playing games like Overwatch and League of Legends on PC, as well as Dauntless on PlayStation 4, worked like a charm. It handled the varied soundscape of swinging through New York City in Marvel’s Spider-Man: Miles Morales very well on PlayStation 5—even while connected via USB, the headset didn’t have any issues with PS5’s spatial sound features.

On PC, the headset includes support for both QuantumSURROUND and DTS: X 2.0 surround sound, and while both work very well, the directional audio of QuantumSURROUND definitely feels a little more natural. Most 7.1 virtual surround sound offers pretty accurate directional sound cues, but it can sound a little like game sounds are segmented into specific audio lanes corresponding to each channel in the source audio. With QuantumSURROUND, the sounds of gunfights and different character conversations and vocal cues in Overwatch never felt segmented like that.

The ear pads are thick and comfortable to wear.

However, something to consider is that picking any surround option with this headset will change the sound profile pretty noticeably. We’ll get into more a little further down, but while QuantumSURROUND may be accurate, it doesn’t exactly sound very good. The DTS:X 2.0 option sounds a little more palatable, but it still distorts the default sound profile in some not so pleasing ways.

How is the noise canceling on the JBL Quantum 800?

The midrange attenuation, which is a lot of what you’ll notice, is similar to that of the AirPods Pro (though not quite as effective).

The JBL Quantum 800 offers better isolation than most gaming headsets on the market, and it should. After all, it features active noise canceling, and while it’s not on par with the best on the market (or anything close to that), it’s plenty for home use. Remember, this isn’t a pair of commuter headphones, it’s a conspicuous gaming headset with all the gaudy flashing lights and the lengthy attached boom mic you’d expect. This isn’t meant for walking around outside, so the demands for something like ANC are less extreme.

This won’t block out the sounds of a doorbell or someone actually talking to you, but it will pretty well erase the hum of a refrigerator or PC, or even noisy neighbors. It may not seem like much, but it can be a godsend sometimes.

How does the JBL Quantum 800 sound?

There’s a lot more bass from the Quantum 800 (cyan) than necessary.

It may look a little wonky, but the JBL Quantum 800 actually have pretty typical sound for a pair of gaming headphones. There’s a pretty notable emphasis on the bass range until 200Hz, and a variety of peaks and valleys throughout the high range.

In music, frequency response like this means the sounds of bass guitars or bass drums will come through even louder. That’s not necessarily a bad thing, if you’re a big fan of EDM or even just songs where the rhythm section really drives the momentum.

See: The best JBL headphones

Lows, mids, and highs

In Bad Boy by Yung Bae, Wiz Khalifa, bbno$, and MAX, the bass drum and bass line that dominate the song’s momentum come through really prominently, which sounds great. However, the slightly distorted orchestral samples that play in the background of the song are a little harder to hear distinctly than they would be on a more neutral-leaning headset.

In game, a sound profile like this isn’t as big a deal. Video games generally have less layered audio in a given moment, so they’re a little more forgiving when it comes to particular audio balancing. The boost in the bass will probably make the rumble of explosions more prominent, but they were always going to be the loudest thing in a given scene, so you may not even notice. The accurate mids are pretty important though, as it means the sounds of character and player speech are less likely to be drowned out by other sounds—same deal with subtler audio cues like footsteps in games like Fortnite.

Does JBL QuantumSURROUND and DTS:X 2.0 sound good?

You can’t use either of the included surround sound options while gaming on console.

However, as I mentioned above, the real complicating factor in how the JBL Quantum 800 sounds are the surround sound options. Both the QuantumSURROUND and DTS:X 2.0 settings noticeably alter the audio profile of the headset, and not always in flattering ways. Turning on either setting means two things to varying degrees: mids get less emphasis, and everything else gets boosted, in slightly odd ways. With the DTS setting, it’s a little less noticeable—everything seems louder, for sure, but otherwise sounds normal.

Learn more: How does surround sound in headphones work?

With QuantumSURROUND, the audio sounds somewhat “distant.” This is a consequence of how the software-powered crosstalk attempts to reproduce sound as we hear it withotu headphones. Ultimately, it yeilds more emphasis in the treble range, and notably less emphasis in the bass and mid ranges. Turning it on makes everything sound pretty unpleasant. If you’re gaming on a modern console like the PlayStation 5 or Xbox Series X, count yourself lucky you can rely on the built-in options those consoles offer.

Does the JBL Quantum 800 have a good microphone?

When you mute the microphone, a section of near the tip will glow red.

There’s very little complicating the microphone of the JBL Quantum 800. Put simply, it just isn’t very good. There’s a very significant de-emphasis across the bass and midrange, and a mild over-emphasis in the high range. The high range signature can be useful because it makes high pitch parts of speech like sibilant and fricative sounds easier to hear.

However, when you boost highs and de-emphasize everything else, you make basically every kind of voice sound like it’s coming out of a tin can on a string, and that’s just the problem we have here. The mic also isn’t terribly clear, so you’re really just in for a pretty mediocre chat experience. Listen for yourself:

How does the microphone sound to you?

996 votes

As of December 8, 2021, nearly 70% of readers have rated the microphone sample somewhere between “bad” and “okay.” This is below-average for headsets with boom microphones.

Should you buy the JBL Quantum 800?

If you’re dead set on finding a gaming headset with ANC, this is pretty much your only option. That doesn’t make it a particularly good option, though.

It’s frustrating how all the little quibbles with this headset really mar the overall experience.

The JBL Quantum 800 is frustrating. On paper, it looks like arguably the best gaming headset ever made. It’s got a very comfortable build, noise canceling, wireless audio, multiple surround sound options, and Bluetooth, all for $200 USD, even less nowadays. In practice, it just doesn’t stick the landing on too many things.

The on-ear control layout is inconvenient to use when you’re not looking directly at it. The surround sound works for directional audio, but it doesn’t sound very good. The noise canceling is noticeable, but only just so. There’s very little Bluetooth codec support. The battery life is pretty lackluster. Basically, it’s just got a little too much going on, and everything seems to suffer as a result.

JBL Quantum 800

All prices listed in USD unless otherwise specified. Prices may change over time, and vary by region. Unfortunately, we cannot list Amazon prices on the site, as they vary greatly by currency.

See price at JBL

See price at Amazon

Very few gaming headsets cover the breadth of features that the JBL Quantum 800 manages, especially for $200. However, if you’re willing to prune a few features off your list of requirements, you don’t have to look very far to find gaming headsets that handle the basics better, and offer a lot of the same frills—often for less money.

What should you get instead of the JBL Quantum 800?

If you’re looking for something wireless, the SteelSeries Arctis 7P or the HyperX Cloud II Wireless might be a better fit. They don’t offer ANC, custom LEDs, or Bluetooth, but they get better battery life and they’re much cheaper. If you’re more of an Xbox gamer, something like the Razer Kaira Pro or SteelSeries Arctis 9x is probably more your speed.

The JBL Quantum 350 is predominantly for PC gamers.

If you want to give another JBL headset a try, maybe the JBL Quantum 350 is more your speed. At least this time around, with all of JBL’s quirks, it costs less than $100 USD. Generally, though, the Quantum 350 is geared more toward PC gamers than console gamers.

Solid but needs some polish [Review] – G Style Magazine

We all know what JBL does when it comes to audio. They make types of audio gear from headphones to speakers. It’s not until recently that JBL decided to put some skin in the game and dive head first into the world of PC gaming audio.

Getting headphones right for gaming community is tricky. Gamers require so much. Comfort, different sound profiles, look, in some cases RGB and price. With so much to consider did JBL get this right for their first time? Yes and No.


The design of any pair of headphones is generally going to be the draw when you decide to drop your money down on a pair and for gamers this particularly true.

JBL’s Quantum 800’s look pretty damn good. They’re what you wanna see with gaming headphones. Big logos, RGB, big comfy earcups, quick access mic, all the bells and whistles. They are well designed in terms of the look. They have a clean matte finish, well placed mic and buttons and overall these headphones look clean.

The earcups on the Quantum 800’s are soft and comfortable due to that memory foam. They’ll give you a solid and snug fit without being tight and ultimately giving you a headache. If you wear glasses like me then these headphones won’t give you any issues. I personally find this to be huge with gaming headphones. So glad that JBL made these comfortable enough to be used with glasses.

The headband is comfy and has some nice cushion and a little give when you put them on so they’re not pushing down on your head. I got plenty of play time hours with these headphones and no real discomfort and that goes a long way. It’s kind of a dealbreaker for me with headphones if they hurt after extended periods.

The Quantum 800’s come with accessories for a wired connection even though you can also use these headphones via bluetooth. I personally prefer my connection wired because I always find that the sound is more consistent not to mention I hate charging headphones but it’s nice that JBL gave us the option. The wired cable is a really long 10ft cable (I’m assuming) which I love and a USB dongle. The Quantum 800’s also support bluetooth 5.0 which means it’s up to current standard and it works with your phone and your PC if it supports it. Again, JBL gives you options with the Quantum 800’s.


I want to start off this part of the review by saying I’m genuinely not a fan of gaming peripheral software. There’s always something missing and I tend to find them a bit convoluted at times BUT I will always remain objective. With JBL’s Quantum Engine software it’s much of the same as I’m used to it. The software looks clean and it is overall helpful. You can do much of the typical things like program the RGB to create custom color patterns, adjust lighting brightness and speed. As far the sound, you can use the presets or create your own custom sound profile. You can toggle the QuantumSurround off/on and tailor your Quantum 800’s as much as the software allows. It’s nothing too crazy. It just does what it does.

I’ll never be too critical of peripheral software mostly because JBL’s software is just as new as the Quantum 800’s and JBL will better refine this later on.


The Quantum 800’s do NOT lack in technology. There’s a reason why these headphones sound as good as they do. Those big 50mm drivers, fairly lightweight build and that ANC all help make your game play intimate yet loud and clear. Take a look at what’s in these cans and see for yourself why they’re such good quality.


Drivers: 50 mm

Weight: 410 g

Audio Specs

Frequency response (Passive) 20 Hz – 40 kHz

Frequency response (Active)20 Hz – 20 kHz

Microphone frequency response100 Hz – 10 kHz

Max input power 30m

WSensitivity95 dB SPL @1 kHz / 1mWMaximum SPL93 dB

Microphone sensitivity-40 dBV @1 kHz


Sound on the JBL Quantum 800’s is it’s strongest point. These headphones sound incredible in my view. The ANC (Active Noise Cancellation) on the Quantum 800’s do a very good job isolating outside noise and making your game play a very intimate experience. The mids are clear, the bass thumps and if you’re playing an intense action game like COD or in my case Destiny 2 this is exactly what you need. Quantum Surround is a good feature for your media if you’re into the whole feeling of movie theater like effect. Sound profiles can be tailored in the Quantum Engine software to improve on your overall experience.

The mic on the Quantum 800’s is also very good. I loved how clear it was and I appreciated how much I sounded like myself when I would talk into the mic. I do wish that this mic was removable so I don’t have to deal with the anxiety of speaking too loudly because I think the other party can’t hear me. I actually like being able to move my mic because it’s adjustable to where I feel most comfortable as opposed to it being fixed. Within the software you can change the sensitivity of mic which is a plus so there’s that.


So, what’s the final verdict on the JBL Quantum 800’s? Are they a worthy pickup? Yes and no. Yes, because the Quantum 800’s check off all the boxes for a solid set of gaming headphones. They have great sound for your music and games, a very good mic and they’re not bad looking, although JBL should work on making them look and feel a lot more premium. The only real thing that stood out to me with the Quantum 800’s is the price. These headphones should be $50 cheaper. I personally find it hard to recommend these gaming cans to somebody at $200. I just don’t see it for what the Quantum 800’s are. Not yet.

All things considered, I do really like these headphones. They are solid. I think some refinements in the software down the road, some more premium looking materials in the next version of these headphones and I can easily say buy these. But there are headphones out right now that you can get that look and feel premium while giving you similar sound for much less. If you must have a pair of these headphones minus the small nitpicks that I mentioned in this review then you can head over to Amazon and grab a set HERE

Boiler KVA 0.

8 Kvant – BorKotloMash

Heating boilers series KVA “Kvant” – steel horizontal fire-tube type boilers with a reversible furnace, gas-tight, with a capacity of 0.1 MW to 4.0 MW. Boilers of the Kvant series are designed for operation in water heating systems with forced water circulation. Operate on natural gas or light liquid fuel. The installation of such boilers is recommended in cases where connection to the main heating and water supply is impossible or impractical.

It is possible to manufacture boilers KVA “Kvant” of models with KVA-0.4, KVA-0.5 and KVA-0.63 with twin boiler units (horizontally or vertically).
Main advantages:

  • high efficiency (not less than 92%), confirmed by the results of operation, is realized due to the organization of conditions for the most complete combustion of fuel and the created efficient heat exchange
  • high fatigue strength – metal thickness increased for boiler durability
  • geometric parameters of the combustion chamber correspond to the burners of leading foreign and domestic manufacturers
  • convective heating surfaces made using
  • seamless pipes

  • universal design of the front cover hinges, allowing the possibility of opening in any direction
  • fully maintainable – welds are easily accessible, for inspection or repair if necessary, just open the front or back cover

The Kva boiler (“Kvant”) is designed for use as part of heating systems, boiler houses, for heat supply in a closed circuit and hot water supply for industrial, residential and public buildings when using natural gas or liquid fuel as a fuel.

Catalog of industrial boilers KVA Kvant, Duet

Boiler design KVA Kvant 0.8 MW

The water-heating boiler is a design, which includes a welded casing 1, consisting of a cavity for heating water, formed by two cylindrical shells . The inner shell, muffled on one side by a disk, is a combustion chamber where the main part of the fuel is burned. The outer shell separates the heated water from the environment. The surface of the shell is covered with heat-insulating material 6. Two pipes for filling and draining water and blowing out the boiler 7 are welded into the outer surface, a flanged hot water outlet 9, a flanged return water inlet 10., a fitting for installing a temperature control sensor 11, and two inspection hatches located in the lower part, allowing inspection of the heating surfaces of the boiler. On the flanges of the inlet and outlet of hot water (pos. 9, 10, see Fig. 1), according to GOST 10617-83 p. 3.7, locking devices are installed that are mandatory in the thermal circuit of the boiler room. Channels from pipes 12 pass through the cavity between the shells, which are welded with their ends into the holes of the end flanges. All parts that come into contact with an open flame are made of boiler steels. Turbulators made of heat-resistant steel, which are easily removed during preventive maintenance, are installed in the tubular channels. Cargo loops are welded to the outer shell. Cover 2 is a welded structure with a heat-resistant heat-insulating lining mass molded into it, the outer layer of which is made with a special geometry of heat-resistant concrete. It is a striker of a swirling open flame and combustion products. On body 1, cover 2 is mounted on canopies of a special design on one side and fixed with lock nuts on the other side. Along the axis of the cover there are holes for inserting elements of block burners into the combustion chamber. On the surface of the cover on the outer side, there are burner fastening studs and a channel for visual control of the fire through a glass window.

The rear cover 3 is also a removable component with fasteners, has a cylindrical outlet for the removal of exhaust gases – combustion products into the flue of the chimney. From all sides, the boiler is decorated with removable fencing panels. The boiler in operation is an installation for the implementation of heat exchange of an open flame, combustion products with water. Water constantly circulates, passing through pipe 10, into the boiler cavity and exits through pipe 9. The water temperature parameters in the boiler circuit determine the operating mode of the block burner. The block burner burns fuel, changes the combustion mode, and maintains the water temperature in the boiler circuit up to 115C.

The temperature range of the water in the boiler circuit is set on the control panel. When the extreme values ​​are reached, the burner is automatically switched on and off. This mode ensures reliable and economical operation of the boiler. When the burner is operating, the combustion gases with excess pressure wash the surface of the combustion chamber, then they are thrown onto the surface of the cover made of heat-resistant concrete and transferred to tubular channels with turbulators that promote increased heat transfer, enter the cavity between the rear cover and the boiler jacket,
are heated at the end flange, after which they are thrown out through the flue channel into the chimney. Up to the gas duct channel of the rear cover, heat transfer of combustion products to heated water is structurally organized. The water pressure in the system can be maintained by an expansion tank (an independent product) or by the hydrodynamic conditions of the water heating system as part of the boiler room. The device, principle of operation, methods of controlling block burners should be familiarized with the operational documentation of these products.

Delivery set of boiler KVA “Kvant” 0.8 MW

1. Heating boiler KVA “Kvant” – 1 pc.

2. Control unit – 1 pc.

3. Operating documents – 1 copy.

Kvant LLC

  • Main
  • Kvant LLC
  • Development indicators and dynamics

The development of the project is impossible without expanding production, both through new production facilities and assembly lines, and deepening processing based on the development of new competencies.

Index 2017 2018 2019 2020 2021
Production area, thousand m2 8 10 15 20 20
Production lines, pcs. 2 3 4 5 6
Production personnel, pers. 200 500 700 900 1100
Processing depth, % 10 18 26 30 33

Expansion of the product range

Continuous expansion of the product range is a prerequisite for sustainable development.

Finished product 2019 2020 2021
LCD TV 120 models
150 models
180 models
Interactive whiteboards 2 models
4 models
6 models
MW oven 4 models 8 models 12 models
Household appliances 5 models 9 models

Deeper processing (localization of components).