About the JBL Quantum 400
Immersive sound and more control for competitive gaming
The JBL Quantum 400 offers 7.1 surround sound simulation and on-ear control over the audio mix.
Immersive sound and more control for competitive gaming
Booming explosions are nice and all, but serious PC and console gamers need more nuanced sound and better control over their audio. The JBL Quantum 400 headset includes all the features and connections found in the JBL Quantum 300 — including JBL's QuantumSURROUND sound — and adds a little more. You get a balance dial for calibrating game/chat audio, a multi-colored LED light-up logo, and second surround sound option, DTS Headphones:X version 2.0.
That means you can better hear distinct sounds and directional cues — plus you have quick and easy control over the audio mix for multi-player games. Dial up the volume on crucial communication with teammates or tune out trash talk from annoying opponents online. The dial is found on the left earcup and it is certified for use with DISCORD, and compatible with other chat software including TeamSpeak.
These headphones feature the same large 50mm drivers found in all of the other Quantum headsets. JBL's special headphone sound signature has been honed by years and years of research and exhaustive user testing. We've visited their U.S. headquarters in California and seen their impressive testing facilities — they take this stuff seriously. It's helped them develop a sound profile that's been proven to satisfy most listeners.
Hands-on with JBL's special software
The Windows PC app gave me control of everything from the surround sound to the pattern of the headset's multi-color LED lights.
These JBLs offers clear, powerful sound out of the box. But for an extra level of immersion into your games and videos — and a suite full of cool customization features — you'll want to download the QuantumENGINE software to your Windows PC. I gave the software a spin with both these headphones and the Quantum 600 headsets, and I really enjoyed the extra level of control.
I could dial in JBL's QuantumSURROUND sound based on my headsize and height. When audio played, the app gave me a visual representation of where the sounds were coming from. Graphics of speakers were positioned all around a 3D avatar of my head, an each would "pulse" when the sound was coming from their direction.
JBL's advanced surround sound processing
The surround processing was pretty effective with the right material. I didn't do any gaming, but I did watch some videos mixed for surround sound. (With three young kids, I've kind of been forced into retirement from Madden and Red Dead — but we plan on having some of our Crutchfield gaming enthusiasts try out the Quantum series soon.)
The new season of the Netflix docuseries Formula 1: Drive to Survive was a good fit for these headphones. All of the visceral racing action and tire changes came through with punch-to-the-gut impact. But then in lower-key moments, like an office meeting between a driver and race sponsor, I heard subtle atmospheric nuances that provided a richer sense of place. For example, even though they were in a nondescript conference room, I heard a faint background murmur of machinery that told me they were within walking distance of the manufacturing area.
Wired connection to your PC or console
In order take advantage of the QuantumENGINE software — including the surround sound processing — you'll need to connect to your PC via the provided USB-A adapter cable. This cable is over four feet long, so it gives you some extra slack. And it feels nice and durable thanks to the woven-fabric covering.
Snug, secure fit with thick memory-foam padding.
The Quantum 400 headset also comes with a durable cable terminated by a 3.5mm miniplug for two-channel audio. So it will connect to the headphone jack at the bottom of your Xbox One or PS4 controller (and some third-party Nintendo Switch controllers). You should be able to make the same type of connection on the forthcoming Xbox Series X and Playstation 5 controllers, based on the specs released by those companies.
Secure, well-cushioned fit
Gamers often end up wearing headphones even longer than us serious music listeners. So JBL added a thick layer of soft memory-foam padding to the Quantum 400's earcups and headband. These headphones do fit snug, but that helps ensure that they stay properly in place while you move around.
One tip for all-day PC gamers: in the QuantumENGINE software suite, choose the EQ setting called "long session." It will smooth out some of the higher frequencies, so you don't get those harsh sounds that can grate on you over time.
Convenient communication and control
Obviously, in the middle of an instense game you don't want stop and fiddle with your headset. To that point, there's a raised volume dial right below the game/chat balance dial that's easy to find with your finger. Plus the attached directional microphone is tuned to pick up voices for clear-sounding chat. You can flip the boom arm up to quickly mute the mic.
- over-ear, closed-back design provides noise isolation
- 50mm drivers deliver clear sound with deep bass emphasis
- JBL's QuantumSOUND signature tuned for immersive gaming sound with hard-hitting effects
- attached voice-focused directional microphone
- raise boom arm to mute the mic
Build and controls:
- Snug, secure fit
- soft memory foam earcup and headband padding helps relieve pressure on your head and ears
- LED earcup logos with RGB lighting effects
- controls on left earcup:
- balance dial controls audio mix for gameplay and chat
- overall volume control dial
- microphone mute button
JBL QuantumENGINE software suite and surround sound:
- downloadable PC software that lets you adjust settings and update firmware to Quantum headset
- headset must be connected to computer via USB cable
- JBL QuantumSURROUND offers surround sound decoding up to 7.1 channels
- helps provide directional and spatial awareness cues
- customize sonic experience based on your head size and body height
- DTS headphones:X v2.0 virtual surround sound
- choose from existing audio profiles or manually dial-in EQ
- fine tune microphone settings
- choose LED lighting pattern for earcup logo
Connections and cables:
- detachable 47" fabric-covered cable terminated with a 3.5mm miniplug
- can connect to PlayStation or Xbox controller
- two-channel stereo listening mode only
- detachable 51" USB-C to USB-A cable
- for charging and connecting to PC for sound, firmware updates, and QuantumENGINE software
General info and specs:
- frequency response: 20-20,000 Hz
- impedance: 32 ohms
- sensitivity: 113 dB
- weight: 9.6 ounces
- warranty: 1 year
- Our 60-day money-back guarantee
- MFR # JBLQUANTUM400BLKAM
What's in the box:
- Gaming headphones
- Foam windscreen for microphone (installed)
- 48" Audio cable (straight 3.5mm plug on one end and angled 3.5mm plug on other end)
- 10' USB cable (Type A USB on one end and USB-C on other end)
- Quick Start Guide
- Warranty Card
- Attention sheet
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More details on the JBL Quantum 400
Overview: The JBL Quantum 400 headset for gamers provides a realistic gaming experience with the JBL QuantumSOUND Signature. The headset features a directional microphone on an adjustable boom, and memory foam ear pads and headband for a comfortable fit during long gaming sessions. The headset comes with interchangeable cables to work with multiple platforms. With the Quantum 400's USB cable, you can enjoy JBL's QuantumSURROUND with your PC, for an even more immersive experience. The 3.5mm cable supports multiple platforms while the USB cable works with your PC, Mac, or PlayStation.
JBL QuantumENGINE: JBL's downloadable QuantumENGINE PC software takes your gaming experience to the next level. Using advanced algorithms and overhead audio, QuantumENGINE provides more realism and a spacious soundstage to put you in the center of the action. QuantumENGINE adds multi-channel surround sound, multi-zone RGB illumination, 3D audio virtualization, and additional audio controls. You can also personalize your JBL Quantum gaming headphones with customized audio features and special light effects and colors. QuantumENGINE software requirements: Windows 7 or higher, 500MB of free hard drive space for installation is required. The headphones are also equipped with DTS Headphone: X v2.0.
Note: Not all software features are available for all Quantum headphone models.
Earcup Design: The Quantum 400's over-ear headset features soft memory foam ear pads for comfort, durability, and even passive noise reduction. The large, integrated rotary volume control, located on the left earcup, gives you easy and fast sound level adjustment at your fingertips.
Game Chat Balance: The Quantum 400 has a dedicated rotary dial on the left earcup that lets you dial in the desired balance between game audio and chat. The control is certified by DISCORD, and compatible with TeamSpeak and other communication platforms. When you want to mute the mic, you can either press the mute button on the earcup, or raise the mic boom.
Drivers: Quantum 400's large 50mm dynamic drivers deliver JBL's QuantumSOUND Signature which for more realistic gaming.
QuantumLIGHTING: The JBL logos on each earcup can be backlit to any color you desire. QuantumLIGHTING. Using the QuantumENGINE software, you can customize your headset by adding RGB color to the logos while you play. A long press of the mute button on the left earcup will let you toggle QuantumLIGHTING on or off as desired.
Microphone: The boom microphone has a voice focusing directional pattern so your communications are crystal clear. It has a frequency response of 100-10kHz, and a sensitivity rating of -40 dBV/PA. The 4mm x 1.5mm microphone is on a 6" boom that can be rotated into position, or flipped up and out of the way when you're not using it. Raising the boom to the upright position automatically engages the microphone mute. A foam windscreen for the microphone is included to cut down on wind noise and plosive sounds.
Connections: The Quantum 400 comes with dual cable options. The 4' fabric-covered audio cable with 3.5mm plugs on both ends supports Xbox, PlayStation, Nintendo Switch, mobile, Mac, and VR platforms. The included 10' USB-A to USB-C cable provides connection to PC, Mac, and PlayStation. With an optional USB-C to USB-C cable, you may be able to connect to a PC, mobile device, laptop, and Nintendo Switch (may not work with all models).
- Frequency Response (Headphones): 20Hz - 20kHz
- Frequency Response (Microphone): 100Hz - 10kHz
- Impedance: 32Ω
- Maximum Input Power: 30mW
- Sensitivity: 98 dB SPL @ 1 kHz / 1mW
- Microphone Sensitivity: -40 dBV @ 1 kHz / PA
- Ear Cup Dimensions:
- Exterior: Width 3.439", Height 3.866", Depth 2.3"
- Interior: Width 1.866", Height 2.319", Depth 1.079"
- Weight: 9.95 ounces