Headsets and headphones / Compare

ASUS ROG Kithara vs JBL Quantum 650X

A

Product A: ASUS

ROG Kithara

67 of 161 known

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B

Product B: JBL

Quantum 650X

64 of 161 known

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Every value links to where we found it.

Only differences

AASUS ROG Kithara

BJBL Quantum 650X

General

4 of 8 differ

Series

Not available

Quantum2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026JBL Quantum gaming line.

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

A702, 90YH0470-BHAA00, 90YH0470-BHUA003Maker product pageeshop.asus.com/us/90yh0470-bhaa00-rog-kithara.htmlRead 14 October 2026US store: Product Name A702 ROG KITHARA/BLK and Part Number 90YH0470-BHAA00.15Retailer pageoffice-partner.de/asus-rog-kithara-gaming-headset-n2008283902Read 14 October 2026Herstellernr. 90YH0470-BHUA00.16Retailer pageldlc.com/en/product/PB00725259.htmlRead 14 October 2026Model 90YH0470-BHUA00.

JBLQTUM650XBLKAM6Retailer pageaudio46.com/products/jbl-quantum-650x-wireless-gaming-headsetRead 14 October 2026US retailer SKU JBLQTUM650XBLKAM for the Quantum 650X. Its spec list repeats the maker's 650X sheet.

GTIN / EAN

471163625804315Retailer pageoffice-partner.de/asus-rog-kithara-gaming-headset-n2008283902Read 14 October 2026EAN 4711636258043 listed for 90YH0470-BHUA00. No EAN was found for the US part number.

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AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

6 January 20264Press releasepress.asus.com/news/press-releases/rog-kithara-planar-magnetic-headsetRead 14 October 2026Taipei, 6 January 2026, CES announcement. No price or date was given.18Spec databasehifiverse.io/components/headphones-extra/headphones/rog-kitharaRead 14 October 2026Announced on 6 January 2026 at CES.

5 January 20265Press articlesoundguys.com/jbl-quantum-gaming-headset-ces-2026-150286Read 14 October 2026SoundGuys article dated 5 January 2026 covers the CES 2026 reveal of the 950X, 650X and 250 for the US.

Status

Available3Maker product pageeshop.asus.com/us/90yh0470-bhaa00-rog-kithara.htmlRead 14 October 2026US store page offers it with Add to Cart.

Available6Retailer pageaudio46.com/products/jbl-quantum-650x-wireless-gaming-headsetRead 14 October 2026US listing in stock at $199.95.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

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SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

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Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$299.996Press articleandroidheadlines.com/2026/02/asus-rog-kithara-gaming-headset-lands-on-us-shelves-for-299-99.htmlRead 14 October 2026US launch price $299.99 on Amazon. US prices exclude sales tax. Tom's Hardware and eCoustics gave $359 at the CES announcement before launch. TechRadar also lists $299.99.7Reviewtechradar.com/gaming/asus-rog-kithara-reviewRead 14 October 2026List price $299.99 / 284.99 GBP / 569 AUD.

$199.955Press articlesoundguys.com/jbl-quantum-gaming-headset-ces-2026-150286Read 14 October 2026CES 2026 report: Quantum 650X priced at $199.95 MSRP. Fonearena and Phileweb give the same US price. US price before sales tax.

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

€319.95Press releasemynewsdesk.com/de/asus-dach/pressreleases/asus-republic-of-gamers-announces-rog-kithara-3431668Read 14 October 2026Dated 11 February 2026. Now available in Germany, Austria and Switzerland at a recommended retail price of EUR/CHF 319.90 including VAT. The EUR price is for Germany and Austria.

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MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

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ColoursiThe maker's own colour names

Black1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Color: Black.

Black7Retailer pageshop.ubreakifix.com/products/quantum-650x-wireless-bluetooth-over-ear-gaming-headset-17Read 14 October 2026US listing names the Quantum 650X in Black. The SKU ends in BLK. Other colors of the 650 sold outside the US (white, purple, teal) are not listed for the 650X.

Segment

Gaming1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Listed under Gaming Headsets and Audio, 3.5mm Headsets.

Gaming2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026The sheet calls it a wireless gaming headset.

Design

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Form factor

Over-ear2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026Large oval ear cups that fit various ear shapes and sizes. Tbreak and LDLC describe the pads as circumaural.11Measurementrtings.com/headphones/reviews/asus/rog-kitharaRead 14 October 2026Type: Over-ear.16Retailer pageldlc.com/en/product/PB00725259.htmlRead 14 October 2026Ear coupling: Circumaural. The same listing wrongly says Closed back, which the maker and reviewers contradict.

Over-ear6Retailer pageaudio46.com/products/jbl-quantum-650x-wireless-gaming-headsetRead 14 October 2026Feature list: Over-ear.

Ear cup enclosureiClosed, open or semi-open acoustic enclosure. This does not describe how the headset folds.

Open2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026Open-back design.4Press releasepress.asus.com/news/press-releases/rog-kithara-planar-magnetic-headsetRead 14 October 2026Open-back design.11Measurementrtings.com/headphones/reviews/asus/rog-kitharaRead 14 October 2026Enclosure: Open-Back.

Closed8Retailer pageldlc.com/en/product/PB00740266.htmlRead 14 October 2026LDLC spec table for the Quantum 650 (non-X, same hardware) lists the headphone configuration as closed back. The same table has errors elsewhere, so only this value is used.

Wearing style

Headband2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026Headband with eight adjustment levels.

Headband2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Soft headband with a mesh hammock and a sliding arm.

FoldingiFlat means the ear cups rotate flat. Inward means the ear cups fold toward the headband.

Flat1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Foldablility: No. The maker's No is read as no folding frame. CGMagazine says the ear cups turn about 100 degrees so the headset can lie flat. Flat is stored because the ear cups rotate flat.13Reviewcgmagonline.com/review/hardware/asus-rog-kithara-gaming-headsetRead 14 October 2026A swivel hinge on top of each cup allows up to around 100 degrees of turn so the headset can lie flat.

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Swivelling ear cupsiEar cups can rotate relative to the headband. Tilting alone does not count.

Yes13Reviewcgmagonline.com/review/hardware/asus-rog-kithara-gaming-headsetRead 14 October 2026A swivel hinge on top of each cup allows up to around 100 degrees of turn so the headset can lie flat.14Reviewgadgetpilipinas.net/2026/09/rog-kithara-reviewRead 14 October 2026The earcups swivel and rotate so the headset can be worn around the neck.

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RGB lighting

No1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Aura: No.

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Lighting zonesiNumber of independently controllable lighting areas across both ear cups.

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Drivers and sound

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Driver type

Planar magnetic1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Driver Material: Planar Magnetic Driver.4Press releasepress.asus.com/news/press-releases/rog-kithara-planar-magnetic-headsetRead 14 October 2026ROG-customized 100mm HIFIMAN planar magnetic drivers.

Dynamic2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Dynamic Driver. Marketed as 50mm carbon dynamic drivers.

Driver sizeiDiameter of the largest sound driver. Do not use the microphone capsule diameter.

100mm1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Driver Size: 100 mm.4Press releasepress.asus.com/news/press-releases/rog-kithara-planar-magnetic-headsetRead 14 October 2026100mm.

50mm2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Dimension Specifications: driver size 50 mm Dynamic Driver.

Drivers per sideiNumber of sound-producing transducers in one side, excluding microphones.

12Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026One 100 mm driver per ear cup. Hifiverse writes a 100 mm planar driver sits in each cup and ASUS says each driver is measured, sorted and paired.18Spec databasehifiverse.io/components/headphones-extra/headphones/rog-kitharaRead 14 October 2026A 100 mm planar magnetic driver sits in each cup.

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Diaphragm material

HIFIMAN Neo Supernano diaphragm2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026HIFIMAN Neo Supernano Diaphragm, named on the page.

Carbon damping4Press articlegame.watch.impress.co.jp/docs/news/2086910.htmlRead 14 October 2026JBL Japan launch text for the Quantum 950, 650 and 250 (Japanese): a carbon damping diaphragm, common to the three. The 650X sheet says a unique carbon damping material.

Magnet

HIFIMAN Stealth Magnet design2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026HIFIMAN Stealth Magnet Design, named on the page.

Neodymium4Press articlegame.watch.impress.co.jp/docs/news/2086910.htmlRead 14 October 2026Same article: neodymium magnet in the 50 mm driver, common to the three models.

Frequency response (wired or passive)iPublished acoustic range for wired listening, or the maker’s single range when no mode is distinguished. Power state and test standard belong in the source note.

Min8 HzMax55 kHz1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Frequency Response: 8Hz - 55kHz.4Press releasepress.asus.com/news/press-releases/rog-kithara-planar-magnetic-headsetRead 14 October 2026Wide 8Hz-55kHz frequency response.

Min20 HzMax40 kHz2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Frequency response (Passive) 20 Hz to 40 kHz. The quick start guide labels the same range USB Audio. Test standard not stated.

Wireless audio transmission bandiFrequency range of audio transmitted over the wireless connection, not the acoustic response of the driver. Codec, sampling rate and bitrate conditions belong in the source note. When the maker gives a range per codec, the widest range is stored and its codec goes in the source note.

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Impedance (passive when specified)iUse the headset-off value for a passive analog connection when the maker publishes both powered and passive values. Note the power state and test frequency.

16Ω1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Headphones Impedance: 16 ohm.5Press releasemynewsdesk.com/de/asus-dach/pressreleases/asus-republic-of-gamers-announces-rog-kithara-3431668Read 14 October 2026Impedance 16 ohms.

32Ω2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Impedance 32 ohm. Power state not stated.

Sensitivity (passive when specified)iUse the headset-off figure when both powered and passive values exist. The power or voltage reference, test distance and frequency belong in the source note.

94dB8Reviewtbreak.com/asus-rog-kithara-review-superb-sound-tricky-comfortRead 14 October 2026Spec table and text: sensitivity 94dB SPL. The reference is not stated there. See the Alza listing for dB per mW.17Retailer pagealza.hu/EN/asus-rog-kithara-d13230677.htmRead 14 October 2026Listing parameters give sensitivity 94 dB/mW, impedance 16 Ohm and converter 100mm. The page returned a bot check to curl and WebFetch, so the values were read from the search result text of the listing.

88.6dB2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Sensitivity 88.6 dB SPL at 1 kHz and 1 mW. Maximum SPL is 95 dB. This is 12.4 dB below the 950X, which the sheets print as 101 dB.

Sensitivity referenceiPublished power or voltage reference for sensitivity. Do not assume 1 mW when the source gives only a dB value.

Per 1 mW17Retailer pagealza.hu/EN/asus-rog-kithara-d13230677.htmRead 14 October 2026Written as dB/mW, so stored as per 1 mW.

Per 1 mW2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Printed as 1 mW.

THD (claimed)iPublished distortion figure or numerical upper bound. The source note states any less-than sign and test level.

0.03%8Reviewtbreak.com/asus-rog-kithara-review-superb-sound-tricky-comfortRead 14 October 2026Spec table: total harmonic distortion <0.03% at 1kHz. Stored as an upper bound. eCoustics gives <0.03% at 1kHz @ 94dB. The ASUS features page shows Total Harmonic Distortion < 0.1% in the microphone block beside the 20 Hz to 20 kHz response and 74 dB SNR, so that figure is read as the microphone and is not stored.9Press articleecoustics.com/products/asus-rog-kitharaRead 14 October 2026CES spec table: THD <0.03% at 1kHz @ 94dB, listed beside the 8Hz to 55kHz headphone response.

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Max input power

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30mW2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Max input power 30 mW.

Max digital audio sample rateiHighest supported digital audio sample rate over a USB cable or wireless dongle. This is not the microphone rate or acoustic frequency response.

96kHz7Reviewtechradar.com/gaming/asus-rog-kithara-reviewRead 14 October 2026The USB-C adaptor supports high-res audio formats up to 24-bit/96KHz.8Reviewtbreak.com/asus-rog-kithara-review-superb-sound-tricky-comfortRead 14 October 2026The USB-C to dual 3.5mm adapter has an onboard DAC that supports up to 24-bit/96kHz output.

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Max digital audio bit depthiHighest published digital playback bit depth over a USB cable or wireless dongle.

24bits7Reviewtechradar.com/gaming/asus-rog-kithara-reviewRead 14 October 2026Up to 24-bit/96KHz over the USB-C adaptor.8Reviewtbreak.com/asus-rog-kithara-review-superb-sound-tricky-comfortRead 14 October 2026Up to 24-bit/96kHz output.

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DAC

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Personalised soundiA manufacturer-supported hearing test or ear scan creates a device sound profile tailored to the listener. Generic equalizer adjustments do not count.

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Onboard EQiCustom playback EQ profiles stored in the headset and applied without the host app running. Note supported active connections. Receiver-only or software-only EQ does not count.

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Custom EQ bandsiNumber of bands in the custom playback equalizer. Microphone EQ bands are excluded.

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EQ presets

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Volume limit

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Spatial audio

2 of 3 differ

Spatial audio supportiNamed headset or host spatial-audio systems that the maker or reviewer explicitly supports. A platform feature may require compatible hardware, software or a separate licence.

Not available

JBL Quantum Spatial Sound2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Features: JBL Quantum Spatial Sound.

Spatial audio licence includediA paid spatial-audio licence is bundled or embedded. Compatibility with a separately purchased app does not count.

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Head tracking

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No5Press articlesoundguys.com/jbl-quantum-gaming-headset-ces-2026-150286Read 14 October 2026The article says the 650X omits head tracking and active noise cancellation compared with the 950X.

Noise cancelling

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Active noise cancelling

No1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Active Noise Cancellation: No.11Measurementrtings.com/headphones/reviews/asus/rog-kitharaRead 14 October 2026Noise Cancelling: No.

No5Press articlesoundguys.com/jbl-quantum-gaming-headset-ces-2026-150286Read 14 October 2026Same sentence: the 650X omits active noise cancellation. The spec sheet lists no ANC.

ANC typeiFeedforward uses outside microphones. Feedback uses inside microphones. Hybrid uses both. Voice-call noise filtering is separate.

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ANC microphonesiTotal microphones used for active playback noise cancellation across both sides. Do not substitute the total physical or voice microphone count.

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Adaptive ANCiNoise cancellation automatically changes with the environment or fit. Manually choosing a level does not count.

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ANC levelsiNumber of adjustable cancellation strength steps. Off and transparency modes are excluded.

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ANC attenuation (claimed)

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Transparency mode

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Adjustable transparency

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Conversation detectioniAudio pauses or lowers automatically when the wearer speaks. Voice assistant activation does not count.

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Wind noise reduction

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Measured

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Frequency response notesiMeasured by a reviewer, not claimed by the maker

RTINGS: flat sound signature with slightly underemphasized bass and balanced treble. SoundGuys: closely matches its Studio Curve target with a little less bass than its Preference Curve.11Measurementrtings.com/headphones/reviews/asus/rog-kitharaRead 14 October 2026Public summary: Sound Signature Flat. Verdict text: flat tuning, smooth bass and mids, some fluctuation in the treble.12Reviewsoundguys.com/hifiman-rog-kithara-review-151437Read 14 October 2026Lab test: the response closely matches the SoundGuys Studio Curve with a bit less bass than the SoundGuys Preference Curve.

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Bass amountiReviewer’s bass deviation from its stated target. Positive is more bass. Target and test method belong in the source note.

-3dB11Measurementrtings.com/headphones/reviews/asus/rog-kitharaRead 14 October 2026Public summary: Bass Amount Slightly Underemphasized (-3 dB). The full test results are behind the RTINGS paywall and were not used. Test bench 2.3.

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Treble amountiReviewer’s treble deviation from its stated target. Positive is more treble. Target and test method belong in the source note.

-1dB11Measurementrtings.com/headphones/reviews/asus/rog-kitharaRead 14 October 2026Public summary: Treble Amount Balanced (-1 dB). Test bench 2.3.

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Deviation from targetiReviewer’s full-range error from its target curve. Do not substitute a regional bass or treble error.

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Consistency between fittingsiReviewer’s standard deviation across repeated fittings. Test rig and fitting procedure belong in the source note.

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Harmonic distortioniIndependently measured harmonic distortion, with test level and method in the source note.

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Sound leakageiIndependently measured leakage at 30 cm. Playback level and method belong in the source note.

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Measured noise isolationiIndependently measured attenuation. Positive values mean more noise reduction. ANC state, rig and frequency bands belong in the source note.

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Noise isolation (measured, best)iMeasured by a reviewer, not claimed by the maker

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Passive isolation (measured)iMeasured by a reviewer, not claimed by the maker

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Mic quality notesiMeasured by a reviewer, not claimed by the maker

RTINGS: natural and easy to understand voice. Slight bass de-emphasis and treble emphasis can sound a bit nasal. It picks up a lot of the room. SoundGuys: voices are captured well and outside noise is rejected without any noise cancelling processing.11Measurementrtings.com/headphones/reviews/asus/rog-kitharaRead 14 October 2026Public microphone verdict text.12Reviewsoundguys.com/hifiman-rog-kithara-review-151437Read 14 October 2026Recordings in ideal, office, reverberant, street and windy conditions. The MEMS mic rejects outside noise with no noise cancellation algorithm.

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Mic low-frequency extensioniMeasured by a reviewer, not claimed by the maker

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Mic high-frequency extensioniMeasured by a reviewer, not claimed by the maker

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Mic speech-to-noise ratioiMeasured by a reviewer, not claimed by the maker

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Measured latencyiEnd-to-end latency measured by a reviewer for a specific connection, platform and codec. Firmware, method and operating mode belong in the source note.

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Bluetooth latency (measured, worst)iMeasured by a reviewer, not claimed by the maker

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2.4 GHz latency (measured, worst)iMeasured by a reviewer, not claimed by the maker

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Measured battery lifeiReviewer’s continuous playback test. State the connection, ANC and lighting where known. Unknown settings stay omitted and are described in the source note.

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Battery life (measured, max)iMeasured by a reviewer, not claimed by the maker

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Clamping forceiMeasured by a reviewer, not claimed by the maker

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Weight (measured)iIndependently weighed headset. A review that repeats the maker’s number does not qualify. Cable and microphone inclusion belong in the source note.

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Microphone

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MicrophoneiMain microphone used for speech. Secondary internal microphones may be described in the source note.

Detachable boom2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026On-cable full-band MEMS boom mic. The detachable cable with microphone is separate from the headphone cable. The CES article says the mic can be unplugged.4Press releasepress.asus.com/news/press-releases/rog-kithara-planar-magnetic-headsetRead 14 October 2026On-cable full-band MEMS boom microphone.12Reviewsoundguys.com/hifiman-rog-kithara-review-151437Read 14 October 2026Removable boom microphone.

Detachable boom2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Features: detachable boom mic.

Microphone element

MEMS2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026MEMS microphone.4Press releasepress.asus.com/news/press-releases/rog-kithara-planar-magnetic-headsetRead 14 October 2026Full-band MEMS boom microphone.

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Microphone pickup patterniUse the maker’s exact named pattern. Unidirectional does not establish whether the capsule is cardioid, supercardioid or hypercardioid.

Supercardioid5Press releasemynewsdesk.com/de/asus-dach/pressreleases/asus-republic-of-gamers-announces-rog-kithara-3431668Read 14 October 2026Specification table: Unidirectional boom microphone (super-cardi). Read as super-cardioid. Tom's Hardware repeats the same cell.10Reviewtomshardware.com/peripherals/gaming-headsets/asus-teams-up-with-hifiman-for-planar-magnetic-rog-kithara-gaming-headset-extremely-comfortable-and-excellent-audio-for-a-priceRead 14 October 2026Specification table repeats the ASUS cell: Unidirectional boom microphone (super-cardi).

Cardioid2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Microphone pickup pattern: Cardioid. The text calls it a 6mm unidirectional mic with Cardioid pattern.

Voice microphonesiTotal microphones used for voice pickup or beamforming across both sides. ANC-only microphones are excluded.

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Total microphonesiEvery physical microphone across the headset, including call, ANC and calibration microphones. Shared microphones count once. Excludes microphones in charging cases or receivers, and vibration sensors. Use an explicitly published physical total, never a sum of overlapping role counts.

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Mic frequency responseiAcoustic microphone response, not its digital sampling rate. Connection-specific ranges belong in the source note.

Min20 HzMax20 kHz1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Microphone Frequency Response: 20Hz - 20kHz.5Press releasemynewsdesk.com/de/asus-dach/pressreleases/asus-republic-of-gamers-announces-rog-kithara-3431668Read 14 October 2026Microphone frequency response 20 Hz - 20 kHz.

Min100Max8,000Hz2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Microphone frequency response 100 Hz to 8 kHz.

Mic sensitivityiPublished microphone sensitivity. Reference such as dBV/Pa or dBFS, frequency and distance belong in the source note.

-36dB1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Microphone Sensitivity: -36 dB. No reference level is given. eCoustics adds a tolerance of 3 dB.9Press articleecoustics.com/products/asus-rog-kitharaRead 14 October 2026Sensitivity -36 +/-3 dB.

-40dB2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Microphone sensitivity -40 dBV/Pa at 1 kHz.

Mic signal-to-noiseiPublished microphone signal-to-noise ratio. Minimum or typical conditions belong in the source note.

74dB2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026High SNR 74 dB. Condition is not stated.5Press releasemynewsdesk.com/de/asus-dach/pressreleases/asus-republic-of-gamers-announces-rog-kithara-3431668Read 14 October 2026Microphone SNR 74 dB.

Not available

Mic sample rateiExplicitly published digital microphone capture or speech sampling rate. State the audio route in the source note, or say it is unpublished. Internal capture does not prove the effective rate on every connection. Acoustic bandwidth, playback rate and generic microphone-chip capability do not qualify.

Not available

Not available

Mic noise reductioniProcessing that removes noise from transmitted speech. Playback ANC and a directional microphone alone do not count.

None2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026FAQ: studio-grade MEMS microphone designed for raw audio fidelity without EQ or noise-canceling algorithms.12Reviewsoundguys.com/hifiman-rog-kithara-review-151437Read 14 October 2026Noise rejection comes from the microphone hardware with no noise cancellation algorithms running.

Not available

Flip to mute

Not available

Not available

Mute button

Yes2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026In-line controls let you mute or unmute the mic. The mute control is a slide switch.10Reviewtomshardware.com/peripherals/gaming-headsets/asus-teams-up-with-hifiman-for-planar-magnetic-rog-kithara-gaming-headset-extremely-comfortable-and-excellent-audio-for-a-priceRead 14 October 2026The in-line controller has a slider that mutes the mic.

Yes3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026Overview item 04: microphone mute/unmute control on the ear cup.

Mute indicatoriPublished indication of microphone mute. mechanical_marker is a visible physical marker showing the microphone's mute-switch position. LED options require an electronic light. The in-line controller option is for a mute light on a cable remote.

Physical mute marker2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026FAQ: a red indicator shows when the mic is muted. Tom's Hardware describes red plastic visible on the slider when muted.10Reviewtomshardware.com/peripherals/gaming-headsets/asus-teams-up-with-hifiman-for-planar-magnetic-rog-kithara-gaming-headset-extremely-comfortable-and-excellent-audio-for-a-priceRead 14 October 2026Large plastic slider for muting the mic with red plastic visible when muted.

Not available

Sidetone

Not available

Not available

Adjustable sidetone

Not available

Not available

Foam microphone windscreeniA foam cover for the voice microphone. An internal metal mesh pop filter does not count.

Yes2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026FAQ tells users to make sure the pop filter is installed. Tom's Hardware describes a foam covering on the mic.10Reviewtomshardware.com/peripherals/gaming-headsets/asus-teams-up-with-hifiman-for-planar-magnetic-rog-kithara-gaming-headset-extremely-comfortable-and-excellent-audio-for-a-priceRead 14 October 2026The removable mic has a foam covering.

Yes2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026What's in the Box: windshield foam for boom microphone.

Connectivity

7 of 20 differ

Audio connectionsiConnections that carry playback audio. Charging or firmware USB alone does not count as USB audio.

Analog, USB1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Interface: Wired. Connector: 3.5mm. The USB-C to dual 3.5 mm adapter carries USB audio.

USB, 2.4 GHz, Bluetooth2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Dual wireless with the 2.4 GHz dongle and Bluetooth 5.3, plus wired use with the included USB-C cable. No analog cable is in the box.3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026USB audio, 2.4 GHz and Bluetooth pages. Charging and USB audio share the headset USB-C port.

Analog source plugsiAnalog plug(s) supplied for the source device, including adapters. The headset-side jack is listed separately.

3.5 mm TRS, 6.35 mm, 4.4 mm balanced, Dual 3.5 mm2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 20263-in-1 cable with swappable 4.4mm balanced, 3.5mm and 6.3mm single-ended plugs. The mic cable ends in separate TRS 3.5mm audio and microphone plugs.

Not available

Cable connector on headsetiConnection used by the playback cable at the headset. A fixed cable is not replaceable through a headset jack.

3.5 mm2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026FAQ: universal dual 3.5 mm female ports, one on each ear cup, so third-party cables fit.

USB-C3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026Overview item 06: USB-C port. It carries charging and USB audio.

Longest included cableiLength of the longest supplied cable, including charging and dongle cables. Individual cable lengths are listed in Cables included.

1.8m1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Both cables are listed at 1.8 m.

Not available

Headset USB plug or portiUSB plug or port on the headset or its included wired audio adapter. A charging-only USB port can appear here.

USB-C2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026The included USB-C to dual 3.5 mm adapter has the USB-C plug.

USB-C3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026Overview item 06: USB-C port on the headset.

Audio over USB-C cableiPlayback through a USB-C cable or included wired USB-C audio adapter. A charging-only USB-C port does not count.

Yes2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026The included USB-C to dual 3.5 mm adapter carries audio and microphone.7Reviewtechradar.com/gaming/asus-rog-kithara-reviewRead 14 October 2026USB-C-to-dual-3.5mm adaptor works with any device that has a USB-C port.

Yes3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026USB audio page: use the cable to connect the headset to PC, Mac, Nintendo Switch, mobile or PS5.

Passive wired listeningiAnalog playback works with the headset powered off or its battery empty. An active analog converter that needs headset power does not count.

Yes11Measurementrtings.com/headphones/reviews/asus/rog-kitharaRead 14 October 2026Verdict: these open-backs only operate passively, so there is no battery life or app to worry about.12Reviewsoundguys.com/hifiman-rog-kithara-review-151437Read 14 October 2026The in-line controls are analogue and work independently of the connected device. 16 ohm impedance needs no dedicated amplifier.

Not available

Wireless receiveriDedicated wireless audio receiver or dongle. A wired USB sound card does not count.

None1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Interface: Wired. No dongle or receiver in the accessory list.11Measurementrtings.com/headphones/reviews/asus/rog-kitharaRead 14 October 2026Wired only headphones.

Included2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026What's in the Box: 1 x USB wireless dongle. The guide names it QUANTUM 650X TM.3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026Dongle model QUANTUM 650X TM.

Wireless receiver connectoriPhysical USB connector on the receiver. Supplied extension cables and adapters are explained in the source note. Both means two native connector types.

Not available

Not available

Wireless range (claimed)iMaker’s advertised wireless range. Connection and indoor or outdoor conditions belong in the source note. Measured distance is not stored here.

Not available

Not available

Bluetooth

Not available

5.32Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Bluetooth version V5.3. Profiles A2DP V1.4 and HFP V1.9. Codecs are not stated.

Bluetooth codecsiNamed Bluetooth audio codecs supported by this exact model. Host, firmware and operating-mode restrictions belong in the source note.

Not available

Not available

LE AudioiLE Audio playback support. Bluetooth Low Energy for app control alone does not count.

Not available

Not available

AuracastiAuracast broadcast audio support. Required phone, firmware and app conditions belong in the source note.

Not available

Not available

Bluetooth multipointiCan remain connected to multiple Bluetooth source devices at once. Mixing Bluetooth with a proprietary dongle is a separate field. A maker's dual connection to two Bluetooth devices at once counts.

Not available

Not available

Multipoint devicesiNumber of Bluetooth source devices connected at once, not the number remembered for later pairing.

Not available

Not available

Paired devices remembered

Not available

Not available

Mixes 2.4 GHz and Bluetooth audioiPlays both wireless audio streams at the same time. Automatic switching or Bluetooth standby does not count.

Not available

Not available

Fast pairing

Not available

Not available

Base station

Not available

Not available

Latency

1 of 2 differ

Low latency modeiA selectable mode intended to reduce audio delay. A low-latency connection without a distinct mode does not count.

Not available

Not available

Claimed latencyiMaker’s claimed delay for the stated connection and mode. Minimum claims and host restrictions belong in the source note.

AASUS ROG Kithara

Not available

BJBL Quantum 650X

Connection	Mode	Latency (ms)
USB	Wired USB audio	30

Source2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Wired USB audio with latency under 30ms. Stored as 30 ms and published as under 30 ms. No figure is published for 2.4 GHz.

Compatibility

2 of 3 differ

Compatible platformsiPlatforms with a documented audio path. This does not imply every connection or microphone function works. Platform editions must be checked individually.

Windows, macOS, PS5, PS4, Xbox Series X|S, Xbox One, Nintendo Switch, Nintendo Switch 2, Android, iOS1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Support Platform: PC, MAC, PlayStation 4, PlayStation 5, Nintendo Switch, iPad, iOS, Android. Compatible with Xbox consoles via 3.5mm connection. The page names no Xbox generation, so TechRadar's Xbox Series X|S and Xbox One is used. Nintendo Switch 2 is named in the features page table.2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026The Suggested Usage Scenarios table names Switch and Switch 2.7Reviewtechradar.com/gaming/asus-rog-kithara-reviewRead 14 October 2026Spec table: PS5, PS4, Nintendo Switch, Nintendo Switch 2, PC, Mac, Xbox Series X|S, Xbox One (audio only via the audio jack on Xbox).

Windows, macOS, iOS, Android, Xbox Series X|S, PS5, Nintendo Switch2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Windows, Mac, iPhone, iPad, Android, Xbox, PlayStation and Nintendo Switch. The sheet says Xbox without a console generation. It is stored as Xbox Series X|S. PlayStation is stored as PS5, the only generation the guide names.3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026Connection pages name Xbox, PC, Mac, Nintendo Switch, PlayStation, PS5 and mobile.

Connection per platformiOnly explicitly documented playback paths for the exact model. Microphone support is separate. Leave unknown microphone support omitted. An Xbox and a PlayStation edition of one headset can connect differently, so it is per variant.

AASUS ROG Kithara

Platform	Connection	Microphone works
Windows	Analog	Yes
Windows	USB	Yes
macOS	Analog	Not available
macOS	USB	Not available
PS5	Analog	No
PS5	USB	Yes
PS4	Analog	No
PS4	USB	Yes
Xbox Series X|S	Analog	No
Xbox One	Analog	No
Nintendo Switch	USB	Yes
Nintendo Switch 2	USB	Yes
Android	Analog	No
Android	USB	Yes
iOS	Analog	No
iOS	USB	Yes

Source2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026Suggested Usage Scenarios table. PC: dual 3.5mm or USB-C with mic on both. Notebook or phone: single 3.5mm for audio only or USB-C, mic over USB-C only. PlayStation: console via USB-C, controller via 3.5mm audio only, mic over USB-C only. Xbox: controller 3.5mm audio only, mic not supported. Switch and Switch 2: USB-C with mic over USB-C only. Mac is not in the table, so no mic cells are stored for it.7Reviewtechradar.com/gaming/asus-rog-kithara-reviewRead 14 October 2026Mic on PS4 and PS5 works only through the USB-C adaptor. The mic does not work with Xbox. Audio on Xbox needs the 3.5mm jack on the controller.

BJBL Quantum 650X

Platform	Connection
Xbox Series X|S	2.4 GHz
Windows	2.4 GHz
Windows	USB
macOS	2.4 GHz
macOS	USB
Nintendo Switch	2.4 GHz
Nintendo Switch	USB
PS5	2.4 GHz
PS5	USB
Android	USB
Android	Bluetooth
iOS	USB
iOS	Bluetooth

Source3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026Power on and connect (Xbox): 2.4 GHz to Xbox. Power on and connect: 2.4 GHz to PC, Mac, Nintendo Switch and PlayStation. USB audio: PC, Mac, Nintendo Switch, mobile and PS5. The Bluetooth page shows pairing from a phone. Mobile is stored as Android and iOS. PlayStation on 2.4 GHz has no console generation and is stored as PS5. Microphone support is not documented per platform.

Official licence

Not available

Not available

Battery and charging

9 of 13 differ

Battery capacityiRated capacity of one headset battery. Do not use case, receiver or total multi-battery capacity.

Not available

700mAh2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Battery type lithium-ion, 3.7 V and 700 mAh. One replaceable battery is in the box.

Swappable batteryiBattery can be exchanged by the user as part of normal operation. Service or recycling disassembly does not count.

Not available

Yes2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026The rechargeable battery can be replaced quickly. A spare battery is sold separately.

Batteries includediNumber of headset batteries supplied, including the one already installed.

Not available

12Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026What's in the Box: 1 x Replaceable battery.

Claimed battery lifeiMaker’s maximum playback time per stated connection, codec, ANC, spatial audio and lighting settings. Name the spatial processing mode and other conditions in the source note. Unknown settings stay omitted.

AASUS ROG Kithara

Not available

BJBL Quantum 650X

Connection	Hours (h)
2.4 GHz	45
Bluetooth	60

Source2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Music play time up to 45 hrs with only 2.4GHz on and up to 60 hrs with only BT on. Talk time figures (30 hrs and 39 hrs) are not stored. The headline 45 hours matches the 2.4 GHz row. ANC does not apply.

Battery life (claimed, max)

Not available

60h=CalculatedFrom Claimed battery life

Battery life with ANC (claimed)

Not available

Not available

Battery life without ANC (claimed)

Not available

Not available

Charging port

None11Measurementrtings.com/headphones/reviews/asus/rog-kitharaRead 14 October 2026Passive wired headphones with no battery.

USB-C3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026Overview item 06: USB-C port. The charging page shows the USB-C cable.

Full charge timeiPublished time to fully charge a depleted headset. In-use charging can take longer.

Not available

180min2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Charging time < 3 hrs from empty. Stored as 180 minutes, the upper bound.

Quick charge timeiCharge duration in the maker’s quick-charge claim. Read together with Quick charge playback.

Not available

5min3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026Charging page: 5 MIN gives 2 H of music playback. Full charge takes 3 H.

Quick charge playbackiPlayback gained from Quick charge time. Charger power, codec, volume and ANC conditions belong in the source note.

Not available

2h3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026Charging page: 5 MIN gives 2 H of music playback.

Use while charging

Not available

Not available

Charging dock or stand

Not available

Not available

Controls

3 of 6 differ

Controls

In-line remote, Volume wheel2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026In-line control on the mic cable with a volume scroll wheel and a mic mute slide switch.8Reviewtbreak.com/asus-rog-kithara-review-superb-sound-tricky-comfortRead 14 October 2026In-line remote module with a scroll wheel for volume and a toggle switch for mic mute.10Reviewtomshardware.com/peripherals/gaming-headsets/asus-teams-up-with-hifiman-for-planar-magnetic-rog-kithara-gaming-headset-extremely-comfortable-and-excellent-audio-for-a-priceRead 14 October 2026In-line controller with a mute slider and a volume wheel.

Not available

Volume control

In-line remote2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026Volume is set with the scroll wheel on the in-line control. It works independently of the system volume.8Reviewtbreak.com/asus-rog-kithara-review-superb-sound-tricky-comfortRead 14 October 2026Volume by scroll wheel on the in-line module.

Not available

Game and chat mixiBalances separate game and chat audio streams. Mixing Bluetooth and dongle source volume alone does not count. Supported platforms belong in the source note.

Not available

Hardware dial3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026Overview item 10: game audio-chat balance dial.

Remappable controlsiOn-device button, touch or dial functions can be reassigned. Changing EQ alone does not count.

Not available

Not available

Wear detection

Not available

Not available

Voice assistant

Not available

Not available

Comfort and build

5 of 11 differ

Headband type

Suspension strap2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026Three-layer soft headband. Tbreak and CGMagazine describe a suspended strap or foam tension band under a metal arc.8Reviewtbreak.com/asus-rog-kithara-review-superb-sound-tricky-comfortRead 14 October 2026A suspended leather strap under a stainless steel upper arc spreads the weight.13Reviewcgmagonline.com/review/hardware/asus-rog-kithara-gaming-headsetRead 14 October 2026A foam tension band acts as the size adjuster.

Suspension strap2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Light mesh hammock under the soft headband.

Headband material

Leatherette, breathable mesh and memory foam in three layers2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026Headband features a three-layer design using leatherette, breathable mesh, and memory foam.8Reviewtbreak.com/asus-rog-kithara-review-superb-sound-tricky-comfortRead 14 October 2026Leather strap under the arc. ASUS calls it leatherette, mesh and memory foam.10Reviewtomshardware.com/peripherals/gaming-headsets/asus-teams-up-with-hifiman-for-planar-magnetic-rog-kithara-gaming-headset-extremely-comfortable-and-excellent-audio-for-a-priceRead 14 October 2026Leatherette and mesh interior band.

Mesh hammock under a soft headband2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Mesh hammock under the soft headband.

Frame material

Metal with a steel headband arc and aluminium hinges2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026Metal frame. The headband has an aluminum hinge. Tom's Hardware and Tbreak call the headband arc steel.8Reviewtbreak.com/asus-rog-kithara-review-superb-sound-tricky-comfortRead 14 October 2026Stainless steel upper arc and well machined metal hinges.10Reviewtomshardware.com/peripherals/gaming-headsets/asus-teams-up-with-hifiman-for-planar-magnetic-rog-kithara-gaming-headset-extremely-comfortable-and-excellent-audio-for-a-priceRead 14 October 2026Bare steel headband.

Not available

Ear cup material

Not available

Not available

Ear pad material

Leatherette with mesh fabric (fitted) and velour (included), both on memory foam2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026Two types: leatherette with fabric and velour. Press release: memory foam leatherette padding.

Memory foam with fabric cover2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Fabric ear cushions. JBL Japan adds memory foam ear pads for the 650.

Replaceable ear pads

Yes1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Extra ear-cushion: Yes. Two sets of ear cushions are in the box.10Reviewtomshardware.com/peripherals/gaming-headsets/asus-teams-up-with-hifiman-for-planar-magnetic-rog-kithara-gaming-headset-extremely-comfortable-and-excellent-audio-for-a-priceRead 14 October 2026Two sets of ear pads. The pads are fairly easy to detach and swap.

Yes2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026The fabric ear cushions can be replaced. Spare parts are sold separately.

Ear pad attachmentiHow a replacement ear pad attaches to the ear cup, not how the decorative outer cover attaches. A press-fit or snap-on pad counts as clip.

Not available

Magnetic4Press articlegame.watch.impress.co.jp/docs/news/2086910.htmlRead 14 October 2026Same article: ear pads that attach and detach magnetically, common to the three models.

Ear pad openingiUsable opening inside an ear pad, excluding the outer cushion. Depth is the internal space between pad surface and driver cover.

Not available

Not available

Ear tips included

Not available

Not available

Dust and water rating

Not available

Not available

User-replaceable parts

Ear pads, Headphone cable, Boom microphone cable2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026Two ear cushion sets, detachable cables and third-party cables are supported per the FAQ.10Reviewtomshardware.com/peripherals/gaming-headsets/asus-teams-up-with-hifiman-for-planar-magnetic-rog-kithara-gaming-headset-extremely-comfortable-and-excellent-audio-for-a-priceRead 14 October 2026Removable cables and swappable ear pads.

Boom microphone, Cable, Ear cushions, Mesh hammock, Battery, Headset cap2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Microphone, cable, fabric ear cushions and mesh hammock. The guide adds the battery and the headset cap.3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026Overview items 09 and 11: replaceable battery and replaceable headset cap.

Software

2 of 3 differ

Companion app

Not available

JBL QuantumENGINE and JBL Quantum App2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026JBL QuantumENGINE dashboard. The guide also points to the JBL Quantum App.3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026Download JBL QuantumENGINE or the JBL Quantum App.

App platforms

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User firmware updates

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Yes2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026The JBL QuantumENGINE dashboard can update the headset firmware.

Dimensions and weight

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Headset weightiPublished headset mass without detachable cable or microphone when stated. A fixed cable remains included. Any unqualified maker weight is identified in the source note.

420g(14.8 oz)1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Weight: 420 g. The page does not say whether the cable or boom mic is included.5Press releasemynewsdesk.com/de/asus-dach/pressreleases/asus-republic-of-gamers-announces-rog-kithara-3431668Read 14 October 2026Weight 420 g.7Reviewtechradar.com/gaming/asus-rog-kithara-reviewRead 14 October 2026Reviewer also states 14.8oz / 420g.

331.5g(11.7 oz)2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Weight 331.5 g. The sheet does not say whether the boom microphone and battery are included.

Headset dimensionsiBody size with headband upright and ear cups in their normal wearing position. Width is across the head, height is top to bottom, and depth is front to back. Folded or flat-swivel dimensions are not substituted.

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Certifications

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Hi-Res Audio

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Communication certifications

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Zoom certified2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026Zoom certification: the headset meets the technical and sound qualifications.

FCC ID

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APIJBLQ650X3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026Compliance label drawing on the last page: headset FCC ID APIJBLQ650X, dongle FCC ID APIJBLQ650XTM.

Other certifications

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In the box

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In the box

ROG Kithara headset, 1.8 m dual 3.5 mm to dual 3.5 mm boom mic cable, 1.8 m dual 3.5 mm cable with 3-in-1 plug (3.5 mm and 6.3 mm single-ended, 4.4 mm balanced), USB-C to dual 3.5 mm adapter, 2 sets of ear cushions: 1 velour, 1 leatherette with mesh fabric, Frequency response measurement card, Warranty booklet, Quick start guide1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Accessories list on the tech specs tab.

Headset, Detachable microphone, Windshield foam for boom microphone, USB wireless dongle, USB-C cable, USB-C to USB-A converter, Replaceable battery, Quick start guide, warranty card and warning card2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026What's in the Box list for the Quantum 650X. It includes the USB-C to USB-A converter, which the Quantum 650 list does not.

Cables includediSupplied playback, charging, dongle and adapter cables. A permanently attached headset cable is included and named as fixed.

AASUS ROG Kithara

Type	Length (m)	Count
Dual 3.5 mm to dual 3.5 mm boom mic cable with in-line controls	1.8	1
Dual 3.5 mm headphone cable with 3-in-1 plug (3.5 mm and 6.3 mm single-ended, 4.4 mm balanced)	1.8	1
USB-C to dual 3.5 mm adapter	Not available	1

Source1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Cable and Accessories lists the 1.8 m dual 3.5 mm boom mic cable, the 1.8 m 3-in-1 plug cable and the USB-C to dual 3.5 mm adapter. No adapter length is given.

BJBL Quantum 650X

Type	Count
USB-C cable	1

Source2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026What's in the Box: 1 x USB-C cable. The converter is an adapter and is not counted here. Length is not stated.

Carrying caseiSupplied carrying case or pouch. A retail carton does not count as a carrying case.

None1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026Carry bag/box: No. The accessory list has no case.

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Links

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Product page

rog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara2Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kitharaRead 14 October 2026ROG global product page.

www.jbl.com/QUANTUM650X.html1Maker product pagejbl.com/QUANTUM650X.htmlRead 14 October 2026Official JBL US product page for the 650X. jbl.com blocks automated access, so the page itself was not read. Stored values come from the spec sheet and the quick start guide.

Spec sheet

rog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/spec1Maker product pagerog.asus.com/headsets-audio/headsets/3-5mm-headsets/rog-kithara/specRead 14 October 2026ROG Kithara Tech Specs tab.

www.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdf2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5eee2bf3/pdfs/JBL_Quantum_650X_Specsheet_EN.pdfRead 14 October 2026English spec sheet for the Quantum 650X, copyright 2026. It matches the Quantum 650 sheet except for the Xbox mentions, Bluetooth HFP V1.9, a 13 dBm dongle and the USB-C to USB-A converter in the box.

Manual

Not available

www.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdf3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2bb9b59e/pdfs/LS_JBL_Quantum_650X_QSG_NAM_FR_EN.pdfRead 14 October 2026English and French quick start guide for the 650X wireless, North America version, with the tech spec table.

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

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Warranty

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Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year3Maker product pageeshop.asus.com/us/90yh0470-bhaa00-rog-kithara.htmlRead 14 October 2026US store: 1 year manufacturer's limited warranty.

1year6Retailer pageaudio46.com/products/jbl-quantum-650x-wireless-gaming-headsetRead 14 October 2026US listing: 1 year limited JBL manufacturer warranty.

Both are also in the API. Back to all headsets and headphones.