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JBL Quantum 520X Wireless

JBLGaming headset

Quantum 520X Wireless

Released August 2026.1Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026JBL Europe press release of 26 August 2026 says the Quantum 520X is available to buy now from jbl.com. The US retail launch is scheduled for 18 October 2026, so the date covers the European launch. Last checked 21 October 2026.

Form factor
Over-ear
Audio connections
USB, 2.4 GHz, Bluetooth
Active noise cancelling
No
Battery life (claimed, max)
37h

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All specs

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General

Series
Quantum1Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026
Model numbers
JBLQTUM520XBLKAM2Retailer pageaudio46.com/products/jbl-quantum-520x-wireless-gaming-headsetRead 14 October 2026Retailer SKU JBLQTUM520XBLKAM. The page lists no separate model number.
GTIN / EAN
05003642546910Retailer pageworldwidestereo.com/products/jbl-quantum-520-x-wireless-over-ear-gaming-headset-blackRead 21 October 2026UPC 050036425469 on the JBL Quantum 520X Wireless listing. This is the US code.
Announced
26 August 20261Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026JBL Europe press release dated 26 August 2026, Cologne.
Status
Available1Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026Available to buy in Europe from 26 August 2026. US retailers list it as a pre-order for 18 October 2026.
Predecessor
Not available
Successor
Not available
Launch price (US)
$129.954Press articlethe-gadgeteer.com/2026/08/27/jbl-quantum-520-vs-520x-vs-120-price-connection-xboxRead 14 October 2026JBL US launch information: 129.95 USD for the 520X with retail availability scheduled for 18 October 2026. US price before sales tax.
Launch price (EU)
€99.991Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026520X priced at 99.99 EUR on the European launch. Price as published in Europe, taxes included.
Markets
US, EU10Retailer pageworldwidestereo.com/products/jbl-quantum-520-x-wireless-over-ear-gaming-headset-blackRead 21 October 2026US retailer listing at 129.95 USD. The European press release lists the model on jbl.com in Europe.
Colours
Black5Press articletrustedreviews.com/news/jbl-unveils-quantum-850-and-new-mid-range-headsets-at-gamescomRead 14 October 2026Black is the only colour for the Quantum 520X.
Segment
Gaming1Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026

Design

Form factor
Over-ear2Retailer pageaudio46.com/products/jbl-quantum-520x-wireless-gaming-headsetRead 14 October 2026Listing features: over-ear.
Ear cup enclosure
Closed3Spec databasegeektopia.es/es/product/jbl/quantum-520x-wirelessRead 14 October 2026Type: closed circumaural.
Wearing style
Headband1Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026Press release: the range has a silicone headband. The headset is worn over the head.
Folding
Not available
Swivelling ear cups
Not available
RGB lighting
Not available
Lighting zones
Not available

Drivers and sound

Driver type
Dynamic1Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026Press release: 50 mm carbon dynamic drivers on the Quantum 650, 520, 520X and 120.
Driver size
50mm1Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026Press release: 50 mm carbon dynamic drivers on the Quantum 650, 520, 520X and 120.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Driver size: 50 mm / 1.97 in dynamic driver.
Drivers per side
Not available
Diaphragm material
Not available
Magnet
Not available
Frequency response (wired or passive)
Min20 HzMax40 kHz2Retailer pageaudio46.com/products/jbl-quantum-520x-wireless-gaming-headsetRead 14 October 2026JBL specifications relayed by the retailer: dynamic frequency response range 20 Hz to 40 kHz. The maker spec sheet and quick start guide label the same figure as USB audio.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Audio Specifications: Frequency response 20 Hz - 40 kHz (USB Audio).
Wireless audio transmission band
Not available
Impedance (passive when specified)
32Ω2Retailer pageaudio46.com/products/jbl-quantum-520x-wireless-gaming-headsetRead 14 October 2026JBL specifications relayed by the retailer: 32 ohm.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Audio Specifications: Impedance 32 ohm.
Sensitivity (passive when specified)
90dB3Spec databasegeektopia.es/es/product/jbl/quantum-520x-wirelessRead 14 October 2026Geektopia lists 90 dB for the 520X. The maker spec sheet and quick start guide state 90 dB SPL at 1 kHz.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Audio Specifications: Sensitivity 90 dB SPL at 1 kHz. The spec sheet has no power reference. The quick start guide adds 1 mW.
Sensitivity reference
Per 1 mW6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026The spec sheet gives no reference. The quick start guide states 90 dB SPL at 1 kHz / 1 mW.7Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026Tech spec: Sensitivity 90 dB SPL @1 kHz / 1 mW.
THD (claimed)
Not available
Max input power
30mW3Spec databasegeektopia.es/es/product/jbl/quantum-520x-wirelessRead 14 October 2026Maximum input power 30 mW.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Audio Specifications: Max input power 30 mW.
Max digital audio sample rate
Not available
Max digital audio bit depth
Not available
DAC
Not available
Personalised sound
Not available
Onboard EQ
Not available
Custom EQ bands
Not available
EQ presets
Not available
Volume limit
Not available

Spatial audio

Spatial audio support
JBL Quantum Spatial Sound1Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026JBL Quantum Spatial Sound, powered by JBL QuantumENGINE. All four headsets in the range have it.
Spatial audio licence included
Not available
Head tracking
Not available

Noise cancelling

Active noise cancelling
No7Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026The ten labelled controls and LEDs and the feature list name no active noise cancelling. The only noise cancelling named is the boom microphone noise reduction.
ANC type
Not available
ANC microphones
Not available
Adaptive ANC
Not available
ANC levels
Not available
ANC attenuation (claimed)
Not available
Transparency mode
Not available
Adjustable transparency
Not available
Conversation detection
Not available
Wind noise reduction
Not available

Measured

We could not find any of these 21 fields. Show them
Frequency response notes
Not available
Bass amount
Not available
Treble amount
Not available
Deviation from target
Not available
Consistency between fittings
Not available
Harmonic distortion
Not available
Sound leakage
Not available
Measured noise isolation
Not available
Noise isolation (measured, best)
Not available
Passive isolation (measured)
Not available
Mic quality notes
Not available
Mic low-frequency extension
Not available
Mic high-frequency extension
Not available
Mic speech-to-noise ratio
Not available
Measured latency
Not available
Bluetooth latency (measured, worst)
Not available
2.4 GHz latency (measured, worst)
Not available
Measured battery life
Not available
Battery life (measured, max)
Not available
Clamping force
Not available
Weight (measured)
Not available

Microphone

Microphone
Detachable boom1Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026Press release: detachable 6 mm cardioid boom mic on all headsets in the range.
Microphone element
Not available
Microphone pickup pattern
Cardioid1Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026Press release: detachable 6 mm cardioid boom mic on all headsets in the range.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Microphone pickup pattern: Cardioid. The text calls it a 6 mm unidirectional mic with cardioid pattern.
Voice microphones
17Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026The guide shows one detachable boom microphone and an audio jack for it. No other voice microphone is listed.
Total microphones
Not available
Mic frequency response
Min100Max8,000Hz3Spec databasegeektopia.es/es/product/jbl/quantum-520x-wirelessRead 14 October 2026Microphone frequencies 100 Hz to 8000 Hz.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Microphone frequency response 100 Hz - 8 kHz.
Mic sensitivity
-40dB3Spec databasegeektopia.es/es/product/jbl/quantum-520x-wirelessRead 14 October 2026Listed as -40 dB with a tolerance of 3 dB. The maker quick start guide states -40 dBV/Pa at 1 kHz.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Microphone sensitivity -40 dBV/Pa at 1 kHz.
Mic signal-to-noise
Not available
Mic sample rate
Not available
Mic noise reduction
DSP6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Features: the mic does not hear the keyboard thanks to the noise reduction technology through JBL QuantumENGINE, which also reduces keyboard noise and sets mic noise reduction. The processing is software on the connected device.7Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026Features: noise reduction technology through JBL QuantumENGINE. Whether it is DSP or AI is not stated.
Flip to mute
Not available
Mute button
Yes7Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026Overview 02: Microphone mute/unmute. The drawing shows a button on the ear cup.
Mute indicator
Not available
Sidetone
Not available
Adjustable sidetone
Not available
Foam microphone windscreen
Yes2Retailer pageaudio46.com/products/jbl-quantum-520x-wireless-gaming-headsetRead 14 October 2026Windshield foam for the boom microphone is in the box.

Connectivity

Audio connections
USB, 2.4 GHz, Bluetooth4Press articlethe-gadgeteer.com/2026/08/27/jbl-quantum-520-vs-520x-vs-120-price-connection-xboxRead 14 October 2026JBL US specifications: 2.4 GHz wireless dongle, Bluetooth 5.4 and low-latency USB-C wired audio.7Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026Power on and connect: 2.4 GHz wireless. Bluetooth section. USB audio section for wired playback.
Analog source plugs
Not available
Cable connector on headset
USB-C4Press articlethe-gadgeteer.com/2026/08/27/jbl-quantum-520-vs-520x-vs-120-price-connection-xboxRead 14 October 2026Wired audio runs over USB-C. The headset-side port type follows from the USB-C cable. Not seen on a maker diagram for the 520X.7Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026The headset has a USB-C port and the USB-C cable carries USB audio. The cable is not fixed. The dongle and boom microphone use their own connections.
Longest included cable
1.5m3Spec databasegeektopia.es/es/product/jbl/quantum-520x-wirelessRead 14 October 2026Cable length 1.5 m. Taken as the length of the USB-C cable in the box.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Cable length 1.5 m.
Headset USB plug or port
USB-C4Press articlethe-gadgeteer.com/2026/08/27/jbl-quantum-520-vs-520x-vs-120-price-connection-xboxRead 14 October 2026USB-C wired audio. The box holds a USB-C cable.7Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026Overview 04: USB-C port on the headset. The box holds a USB-C cable.
Audio over USB-C cable
Yes4Press articlethe-gadgeteer.com/2026/08/27/jbl-quantum-520-vs-520x-vs-120-price-connection-xboxRead 14 October 2026JBL US specifications: low-latency USB-C wired audio.7Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026USB audio section: playback over the USB-C cable on PC, Mac, Nintendo Switch, Mobile and PlayStation 5.
Passive wired listening
Not available
Wireless receiver
Included2Retailer pageaudio46.com/products/jbl-quantum-520x-wireless-gaming-headsetRead 14 October 2026USB wireless dongle in the box.7Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026What is in the box: USB wireless dongle.
Wireless receiver connector
USB-C6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026The box holds a USB wireless dongle and a USB-C to USB-A converter. The quick start guide drawing shows the dongle with a USB-C plug and the converter with a USB-A plug. Stored as USB-C because the converter adapts it to USB-A.7Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026What is in the box drawing: USB wireless dongle with USB-C plug and a USB-C to USB-A converter.
Wireless range (claimed)
Not available
Bluetooth
5.42Retailer pageaudio46.com/products/jbl-quantum-520x-wireless-gaming-headsetRead 14 October 2026JBL US specifications: V5.4, A2DP profile. German-language press for the same headset says Bluetooth 5.3. The maker spec sheet and quick start guide both say V5.4, which is used.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Bluetooth version V5.4. Profiles A2DP V1.4 and HFP V1.9. No Bluetooth codec is named.
Bluetooth codecs
Not available
LE Audio
Not available
Auracast
Not available
Bluetooth multipoint
Not available
Multipoint devices
Not available
Paired devices remembered
Not available
Mixes 2.4 GHz and Bluetooth audio
Not available
Fast pairing
Not available
Base station
Not available

Latency

We could not find any of these 2 fields. Show them
Low latency mode
Not available
Claimed latency
Not available

Compatibility

Compatible platforms
Windows, macOS, iOS, Android, Xbox Series X|S, PS5, Nintendo Switch1Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026FAQ: optimized for Xbox and compatible with other mobile and PC platforms and PlayStation. Source says Xbox and PlayStation without a console generation. Stored as Xbox Series and PS5.2Retailer pageaudio46.com/products/jbl-quantum-520x-wireless-gaming-headsetRead 14 October 2026JBL text: works with Windows, Mac, iPhone, iPad, Android, Xbox, PlayStation and Nintendo Switch. Stored as Windows, macOS, iOS, Android, Xbox Series, PS5 and Nintendo Switch. The source does not name console generations.
Connection per platform
PlatformConnection
Xbox Series X|S2.4 GHz
Windows2.4 GHz
WindowsUSB
macOS2.4 GHz
macOSUSB
Nintendo Switch2.4 GHz
Nintendo SwitchUSB
PS52.4 GHz
PS5USB
Android2.4 GHz
AndroidUSB
iOS2.4 GHz
iOSUSB
Source7Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026Power on and connect: 2.4 GHz for Xbox, PC, Mobile, Mac, Nintendo Switch and PlayStation. USB audio: PC, Mac, Nintendo Switch, Mobile and PlayStation 5. The guide names Xbox, PlayStation and Mobile without a generation or operating system. Stored as Xbox Series, PS5 and both Android and iOS, as the spec sheet names iPhone, iPad and Android. Bluetooth is not tied to a platform in the guide and has no rows. Microphone support per path is not stated.
Official licence
Xbox certified1Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026Press release: Quantum 520X is Xbox certified.

Battery and charging

Battery capacity
500mAh2Retailer pageaudio46.com/products/jbl-quantum-520x-wireless-gaming-headsetRead 14 October 2026Lithium-ion battery, 3.7 V and 500 mAh. Power supply 5 V and 1 A.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Battery type: Lithium-ion battery (3.7 V / 500 mAh).
Swappable battery
Not available
Batteries included
Not available
Claimed battery life
ConnectionHours (h)
2.4 GHz30
Bluetooth37
Source2Retailer pageaudio46.com/products/jbl-quantum-520x-wireless-gaming-headsetRead 14 October 2026Music play time up to 30 h with only 2.4 GHz on and up to 37 h with only Bluetooth on. Talk time of 28 h and 30 h is not stored. ANC, codec and volume are not stated.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Music play time with only 2.4GHz on up to 30 h and with only BT on up to 37 h. Talk time 28 h and 30 h is not stored. ANC, codec and volume are not stated.
Battery life (claimed, max)
37h
Battery life with ANC (claimed)
Not available
Battery life without ANC (claimed)
Not available
Charging port
USB-C4Press articlethe-gadgeteer.com/2026/08/27/jbl-quantum-520-vs-520x-vs-120-price-connection-xboxRead 14 October 2026USB-C cable in the box with a 5 V and 1 A power supply rating. A dedicated charging port is not named in the 520X sources.7Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026Overview 04: USB-C port. The Charging section shows the USB-C cable and the charging LED. Power supply 5 V, 1 A.
Full charge time
180min2Retailer pageaudio46.com/products/jbl-quantum-520x-wireless-gaming-headsetRead 14 October 2026Published as less than 3 hours from empty. Stored as 180 minutes, the upper bound.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Charging time: < 3 hrs from empty. Stored as 180 minutes, the upper bound.
Quick charge time
5min5Press articletrustedreviews.com/news/jbl-unveils-quantum-850-and-new-mid-range-headsets-at-gamescomRead 14 October 2026A five-minute charge gives one extra hour on the Quantum 650, 520 and 520X. Playback conditions are not stated.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Up to 37 hours of playtime: when it is flat, a 5-minute charge gains 1 extra hour of playtime. Playback conditions are not stated.
Quick charge playback
1h5Press articletrustedreviews.com/news/jbl-unveils-quantum-850-and-new-mid-range-headsets-at-gamescomRead 14 October 2026A five-minute charge gives one extra hour on the Quantum 650, 520 and 520X. Playback conditions are not stated.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Up to 37 hours of playtime: when it is flat, a 5-minute charge gains 1 extra hour of playtime. Playback conditions are not stated.
Use while charging
Not available
Charging dock or stand
Not available

Controls

Controls
Not available
Volume control
Not available
Game and chat mix
Hardware dial7Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026Overview 08: Game audio-chat balance dial. The French text calls it a game and chat audio mixing wheel.
Remappable controls
Not available
Wear detection
Not available
Voice assistant
Not available

Comfort and build

Headband type
Not available
Headband material
Silicone1Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026Press release: the range now has a silicone headband and breathable fabric ear cushions. Stated for the range, with the Quantum 520X included in the same sentence.
Frame material
Not available
Ear cup material
Not available
Ear pad material
Breathable fabric1Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026Press release: the range now has a silicone headband and breathable fabric ear cushions. Stated for the range, with the Quantum 520X included in the same sentence.
Replaceable ear pads
Not available
Ear pad attachment
Not available
Ear pad opening
Not available
Ear tips included
Not available
Dust and water rating
Not available
User-replaceable parts
Not available

Software

Companion app
JBL QuantumENGINE2Retailer pageaudio46.com/products/jbl-quantum-520x-wireless-gaming-headsetRead 14 October 2026JBL text: JBL QuantumENGINE dashboard and free PC suite.
App platforms
Windows11Maker product pagesupport.jbl.com/us/en/howto/jbl-quantum-engine-software-release-notes-us/000018780.htmlRead 21 October 2026QuantumENGINE software update release notes, version 2.8.6 of 2026-08-21: added support for Quantum 520X and Quantum 255. The page covers the Windows application. The macOS release notes name no 520X, so macOS is not stored. Mobile app support is not stated.
User firmware updates
Not available

Dimensions and weight

Headset weight
322.8g(11.4 oz)2Retailer pageaudio46.com/products/jbl-quantum-520x-wireless-gaming-headsetRead 14 October 2026Specification: 322.8 g. Unqualified maker weight, not independently weighed. Microphone inclusion is not stated.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Weight 322.8 g. Unqualified maker weight.
Headset dimensions
Not available

Certifications

Hi-Res Audio
Hi-Res Audio1Press releasenews.jbl.com/en-CEU/269347-jbl-announces-jbl-quantum-520-quantum-520x-and-quantum-120Read 14 October 2026Key technologies and FAQ: all four headsets feature Hi-Res Audio. The wired or wireless path is not stated.
Communication certifications
Zoom certified6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026Zoom certification: the headset meets all the technical and sound qualifications for Zoom certification.
FCC ID
APIJBLQ520X9Regulatory filingfccid.io/APIJBLQ520XRead 21 October 2026FCC ID APIJBLQ520X, Harman International Industries, product code JBLQ520X, gaming wireless headset, final action 2026-06-11. The USB wireless dongle has its own ID APIJBLQ520TM, which is not stored. The quick start guide names the headset model QUANTUM 520X.
Other certifications
EU Radio Equipment Directive 2014/53/EU conformity, EU RoHS Directive 2011/65/EU conformity, UK Radio Equipment Regulations 2017 conformity, UK RoHS Regulations 2012 conformity8Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw0e2c42a9/pdfs/JBL%20QUANTUM%20520X-EU_UK%20DOC_V8.1.pdfRead 21 October 2026EU and UK declarations of conformity for models QUANTUM 520X and QUANTUM 520 TM dated 2026-06-16. EU: RED 2014/53/EU and RoHS (EU) 2015/863 amending 2011/65/EU. UK: Radio Equipment Regulations 2017 and RoHS Regulations 2012.

In the box

In the box
JBL Quantum 520X headset, Detachable boom microphone, Windshield foam for boom microphone, USB wireless dongle, USB-C to USB-A converter, USB-C cable, Quick start guide, warranty card and warning card2Retailer pageaudio46.com/products/jbl-quantum-520x-wireless-gaming-headsetRead 14 October 2026What's in the box: headset, detachable boom microphone, windshield foam, USB wireless dongle, USB-C cable and paperwork.6Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb8b62ee8/pdfs/JBL_Quantum_520X_Specsheet_EN.pdfRead 21 October 2026What is in the box: headset, detachable boom microphone, windshield foam, USB wireless dongle, USB-C to USB-A converter, USB-C cable, quick start guide, warranty card and warning card.7Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026What is in the box: USB-C cable, USB wireless dongle, windshield foam, USB-C to USB-A converter, detachable boom microphone, QSG, warranty card and safety sheet.
Cables included
TypeLength (m)Count
USB-C1.51
Source3Spec databasegeektopia.es/es/product/jbl/quantum-520x-wirelessRead 14 October 2026Cable length 1.5 m with a USB-C connector. The USB-C cable in the box matches this listing. The other end of the cable is not stated.
Carrying case
None7Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwff42b79c/pdfs/JBL_Quantum_520X_QSG_Global.pdfRead 21 October 2026The complete box list holds no carrying case or pouch.

Warranty

Manufacturer warranty (source market)
1year2Retailer pageaudio46.com/products/jbl-quantum-520x-wireless-gaming-headsetRead 14 October 2026US listing: 1 year limited JBL manufacturer warranty.

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Sources

We read 12 sources for this headset. The numbers match the markers in the sheet.

  1. Read 14 October 2026Backs 17 fields
  2. Read 14 October 2026Backs 15 fields
  3. Read 14 October 2026Backs 7 fields
  4. Read 14 October 2026Backs 6 fields
  5. Read 14 October 2026Backs 3 fields
  6. Read 21 October 2026Backs 22 fields
  7. Read 21 October 2026Backs 17 fields
  8. Read 21 October 2026Backs 1 field
  9. Regulatory filingfccid.io/APIJBLQ520X
    Read 21 October 2026Backs 1 field
  10. Read 21 October 2026Backs 2 fields
  11. Read 21 October 2026Backs 1 field
  12. Maker product pagejbl.com/QUANTUM520X.html
    Read 21 October 2026Backs 1 field

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