Wireless speakers / Compare

Harman Kardon Onyx Studio 9 vs JBL Go 4

A

Product A: Harman Kardon

Onyx Studio 9

54 of 96 known

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B

Product B: JBL

Go 4

46 of 96 known

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Every value links to where we found it.

Only differences

AHarman Kardon Onyx Studio 9

BJBL Go 4

General

6 of 8 differ

Series

Onyx Studio1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Maker sheet is titled Onyx Studio 9. Series name from the Onyx Studio line.

Not available

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

HKOS9BLKEP, HKOS9GRYEP, HKOS9BLKAM8Retailer pagepood.datafox.ee/harman-kardon-onyx-studio-9-portable-speakerRead 16 October 2026Manufacturer code HKOS9GRYEP, the grey EU item.9Retailer pagepood.datafox.ee/harman-kardon-onyx-studio-9-speakerRead 16 October 2026Manufacturer code HKOS9BLKEP, the black EU item.10Retailer pageep-online.ch/catv/de/p/1475591/onyx-studio-9Read 16 October 2026HKOS9GRYEP.11Retailer pagepanacompu.com/panama/en/product-information/harman-kardon-onyx-studio-9-portable-wireless-speaker-bluetooth-blackRead 16 October 2026Listing gives model and part number HKOS9BLKAM, the Americas black item.

JBLGO4WHTAM1Maker product pagejbl.com/GO-4.htmlRead 8 October 2026Item number on this exact page. Colour-specific retail SKU is one proven identifier, not an exhaustive regional SKU list.

GTIN / EAN

1200130014116, 12001300182378Retailer pagepood.datafox.ee/harman-kardon-onyx-studio-9-portable-speakerRead 16 October 2026Listing gives EAN 1200130018237 for HKOS9GRYEP. The ep-online listing gives the same code.9Retailer pagepood.datafox.ee/harman-kardon-onyx-studio-9-speakerRead 16 October 2026Listing gives EAN 1200130014116 for HKOS9BLKEP. The ep-online listing gives the same code.10Retailer pageep-online.ch/catv/de/p/1475591/onyx-studio-9Read 16 October 2026Swiss listing for HKOS9GRYEP gives EAN 1200130018237 and net weight 3.33 kg.

Not available

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

September 20244Press articlephileweb.com/sp/news/d-av/202410/31/61425.htmlRead 16 October 2026Japanese trade report dated 31 October 2024 says the speaker was first shown at a September 2024 event.

8 January 20245Press released21buns5ku92am.cloudfront.net/68766/documents/53768-1704707414-CES%202024%20JBL%20Portables%20Press%20Release%20EMEA%20Final%20v08.01-953b83.pdfRead 8 October 2026CES launch dated January 8, 2024.

Status

Available5Reviewt3.com/tech/bluetooth-speakers/harman-kardon-onyx-studio-9-reviewRead 16 October 2026Review lists current retail offers.

Available1Maker product pagejbl.com/GO-4.htmlRead 8 October 2026Maker offers this model for purchase on the accessed date.

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

Not available

JBL Go 39Reviewsoundguys.com/jbl-go-4-review-117126Read 23 October 2026SoundGuys calls the JBL Go 4 a worthy successor to the Go 3.

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.

Not available

JBL Go 510Reviewtechradar.com/audio/wireless-bluetooth-speakers/jbl-go-5-reviewRead 23 October 2026TechRadar's review says the Go 5 was released about two years after its predecessor, the JBL Go 4.

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

$299.955Reviewt3.com/tech/bluetooth-speakers/harman-kardon-onyx-studio-9-reviewRead 16 October 2026Review says the official US price is $299.95. 9to5Toys says the model originally launched at $300. Tax treatment is not stated.

Not available

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.

Not available

€49.995Press released21buns5ku92am.cloudfront.net/68766/documents/53768-1704707414-CES%202024%20JBL%20Portables%20Press%20Release%20EMEA%20Final%20v08.01-953b83.pdfRead 8 October 2026Published EMEA consumer launch price in euros. Separate from current discounts and USD retail prices.

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

US, EU11Retailer pagepanacompu.com/panama/en/product-information/harman-kardon-onyx-studio-9-portable-wireless-speaker-bluetooth-blackRead 16 October 2026The AM code is the US item code. Panama sells the same item.

Not available

ColoursiThe maker's own colour names

Classic Black, Stone Grey3Press releasenews.harmankardon.com/en-GB/245491-harman-kardon-onyx-studio-9-combines-timeless-design-with-innovative-new-featuresRead 16 October 2026Available in Classic Black and Stone Grey. UK press release dated 6 January 2025 with UK availability from February 2025 at 229.99 GBP.4Press articlephileweb.com/sp/news/d-av/202410/31/61425.htmlRead 16 October 2026Japan sells it in Classic Black and Light Grey.

Not available

Speaker typeiHome covers speakers made to stay in one place, including smart speakers. A speaker with Wi-Fi or a voice assistant can be of any type.

Portable1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Maker title: portable stereo Bluetooth home speaker with a built-in battery and an integrated handle.

Portable1Maker product pagejbl.com/GO-4.htmlRead 8 October 2026Maker explicitly identifies the speaker as portable or ultra-portable.

Audio

8 of 18 differ

Audio channelsiSound channels reproduced by one speaker. Pairing two speakers for stereo is separate.

Stereo1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Maker title says stereo. Constant Sound Field mixes the music to a three-channel system with a dedicated center channel and two tweeters.

Mono4Reviewsoundguys.com/jbl-go-4-review-117126Read 8 October 2026Review explicitly calls one speaker mono. Wireless stereo requires a second matching speaker.

Audio driversiPowered audio transducers in one speaker. Passive radiators are counted separately. Circular diameter and rectangular width and height have separate columns. Per-driver power must state continuous or RMS basis and battery or mains operation in the source note.

AHarman Kardon Onyx Studio 9

Driver type	Count	Diameter (mm)
Woofer	1	120
Tweeter	3	20

Source1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Woofer 1 x 120 mm and tweeter 3 x 20 mm. One tweeter is the center channel and two face the sides, per the Fnac lab. No per-driver power is published.

BJBL Go 4

Driver type	Count	Diameter (mm)	Rated power per driver (W)
Driver	1	45	4.2

Source2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Technical Specifications states one 45 mm powered transducer and its RMS output. Passive radiator is separate.

Passive radiatorsiPassive, unpowered bass radiators. Excludes powered drivers.

Not available

Not available

Rated audio poweriMaker-published total rated continuous audio output. Battery power is used for portable speakers when mains and battery ratings differ. Peak marketing power is separate.

50W1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Rated output power 50 W RMS. No separate battery and mains rating is published.

4.2W2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Technical Specifications explicitly output power 4.2 W RMS.

Rated audio power on mainsiTotal rated continuous audio output with external power. Store a separate battery rating when the maker publishes both.

Not available

Not available

Audio output power (unspecified rating)iMaker- or reviewer-published audio output power whose continuous or peak rating basis is not stated. This is separate from rated continuous output and explicitly published peak output.

Not available

Not available

Peak audio poweriExplicitly published peak audio output. Never substitute for rated continuous output.

Not available

Not available

Frequency response lower limit (claimed)iPublished acoustic frequency response limit. Tolerance and operating mode belong in the source note. The Bluetooth transmission range that some spec tables and retailers label Frequency Response, such as A2DP 20 to 20,000 Hz, is not stored.

50Hz1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 202650 Hz to 20 kHz at -6 dB.

90Hz2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Technical Specifications claimed lower limit. Tolerance not published. Not measured bass extension.

Frequency response upper limit (claimed)iPublished acoustic frequency response limit. Tolerance and operating mode belong in the source note. The Bluetooth transmission range that some spec tables and retailers label Frequency Response, such as A2DP 20 to 20,000 Hz, is not stored.

20kHz1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 202650 Hz to 20 kHz at -6 dB.

20kHz2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Technical Specifications upper limit 20 kHz. Tolerance not published.

Signal-to-noise ratio (claimed)

80dB1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Published as greater than 80 dB. The stored number is the lower bound.

Not available

Adjustable equalizeriUser-adjustable frequency bands. Selecting fixed sound presets alone does not qualify.

Yes1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026The Harman Kardon One app customizes the EQ.

Yes1Maker product pagejbl.com/GO-4.htmlRead 8 October 2026JBL Portable app provides adjustable sound controls. Review separately identifies the number of EQ bands.

Equalizer bandsiNumber of user-adjustable frequency bands. Do not count sound presets.

75Reviewt3.com/tech/bluetooth-speakers/harman-kardon-onyx-studio-9-reviewRead 16 October 2026The Customize preset opens a seven-band EQ with plus or minus 12 dB from below 120 Hz to above 8 kHz.

54Reviewsoundguys.com/jbl-go-4-review-117126Read 8 October 2026Review describes 5-band customizable EQ in JBL Portable. EQ options depend on speaker firmware and app version. Group playback can reset custom EQ.

Automatic sound adjustmentiAdjusts audio to placement or playback conditions. Keep the named feature and conditions in the source note.

Yes1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Self-Tuning: when you power on, the speaker automatically calibrates to its environment.

Not available

Sound modesiNamed playback modes. Battery extension modes are also qualified in battery source notes.

Signature Sound, Vocal, Energetic, Chill5Reviewt3.com/tech/bluetooth-speakers/harman-kardon-onyx-studio-9-reviewRead 16 October 2026App listening presets: Signature Sound, Vocal, Energetic, Chill and Customize. Customize is the manual EQ and is not stored as a mode.12Reviewcellphones.com.vn/sforum/danh-gia-harman-kardon-onyx-studio-9Read 16 October 2026Review lists the same app presets: Signature Sound, Vocal, Energetic, Chill.

Playtime Boost2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Named maker battery extension mode Playtime Boost. It changes sound and is separate from normal playback.

Wireless stereo pairingiTwo compatible speakers can play separate left and right channels.

Yes1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Two Onyx Studio 9 speakers can be paired wirelessly for a wider stereo soundstage.2Owner's manualelmir.ua/response/product-instruction.phpRead 16 October 2026Stereo boost pairing section: pair for left and right channels, with swap and unpair steps.

Yes1Maker product pagejbl.com/GO-4.htmlRead 8 October 2026Two speakers of the same model form a stereo pair. Cross-model grouping plays the same programme and does not establish stereo pairing.

Speaker link protocolsiNamed systems for linking compatible speakers, such as PartyBoost, Auracast or Party Connect. Linking support does not establish compatibility across all models.

Auracast1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Multi-speaker connection by Auracast with two or more Harman Kardon speakers or compatible speakers from other brands. The sheet says as many speakers as you want, with no number.3Press releasenews.harmankardon.com/en-GB/245491-harman-kardon-onyx-studio-9-combines-timeless-design-with-innovative-new-featuresRead 16 October 2026Auracast connects to another Onyx Studio 9 or any other Auracast-enabled Harman Kardon speaker.

Auracast1Maker product pagejbl.com/GO-4.htmlRead 8 October 2026Maker names Auracast. No backward compatibility with the other JBL linking generation is inferred.

Max linked speakersiPublished maximum in a speaker group. A stereo pair is recorded separately. A figure such as 100+ is stored as 100.

Not available

Not available

Max Bluetooth group speakersiPublished maximum speakers in one Bluetooth playback group, including the first speaker. Source notes name the compatible models or families, linking system and firmware requirements. Wi-Fi groups and concurrent Bluetooth source devices are excluded. A stereo pair alone does not establish the maximum when other Bluetooth linking systems are supported. A figure such as 100+ is stored as 100.

Not available

Not available

Connectivity

3 of 16 differ

Bluetooth audio playbackiPlays audio streamed over Bluetooth from a phone or other source. Bluetooth used only for setup or app control does not count.

Yes1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026

Yes2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026

Bluetooth versioniVersion of the Bluetooth radio. Some Wi-Fi speakers use Bluetooth only for setup. See Bluetooth audio playback.

5.31Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Bluetooth 5.3.

5.32Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Literal Bluetooth version from Technical Specifications. No codec inferred.

Bluetooth codecsiExplicitly supported receive codecs. Bluetooth version alone does not establish codecs.

Not available

Not available

Bluetooth profiles

A2DP 1.4, AVRCP 1.61Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026A2DP 1.4 and AVRCP 1.6.

A2DP 1.4, AVRCP 1.62Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Literal profile versions from Technical Specifications.

Bluetooth LE AudioiExplicit LE Audio support. Bluetooth LE for app control alone does not qualify.

Not available

Not available

AuracastiExplicit Auracast support. Sending, receiving and speaker-group roles belong in source notes.

Yes1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Auracast button on the speaker or in the app. Sending and receiving roles are not stated.

Yes1Maker product pagejbl.com/GO-4.htmlRead 8 October 2026Maker explicitly supports JBL Auracast speaker grouping and same-model stereo pairing. Source-to-speaker universal Auracast receiver role not inferred.

MultipointiConcurrent Bluetooth source connections. Pairing memory and speaker-to-speaker linking do not qualify.

Yes1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Pairs with up to two mobile devices simultaneously.

Yes1Maker product pagejbl.com/GO-4.htmlRead 8 October 2026Features explicitly says Multi-Point Connection Yes. Concurrent source count is separate.4Reviewsoundguys.com/jbl-go-4-review-117126Read 8 October 2026Review explicitly documents concurrent Bluetooth source connections.

Multipoint source devicesiMaximum concurrently connected Bluetooth source devices, not remembered pairings.

22Owner's manualelmir.ua/response/product-instruction.phpRead 16 October 2026Multi-point connection section: maximum 2 devices.

24Reviewsoundguys.com/jbl-go-4-review-117126Read 8 October 2026Review explicitly says two sources simultaneously.

Bluetooth range (claimed)iMaker-claimed Bluetooth range to the source device. Test conditions belong in the source note.

Not available

Not available

Wi-FiiBuilt-in Wi-Fi, for audio streaming, setup or control.

No6Measurementleclaireur.fnac.com/test/589784-test-labo-harman-kardon-onyx-studio-9Read 16 October 2026Lab review says there is no Wi-Fi, so no AirPlay 2 or Chromecast.7Retailer pageldlc.pro/fr-be/fiche/PB00671696.htmlRead 16 October 2026Retailer spec table lists Wi-Fi: no.

Not available

Wi-Fi standardsiOne 802.11 name per item, such as 802.11ax. A Wi-Fi generation is written as its standard, so Wi-Fi 5 is 802.11ac and Wi-Fi 6 is 802.11ax. Older standards are listed only when a source names them.

Not available

Not available

Network audio protocolsiNamed systems that stream audio to the speaker over the home network. AirPlay is written as AirPlay 2. Chromecast built-in is written as Google Cast. Other names follow the maker, such as Spotify Connect.

Not available

Not available

USB audio inputiPlayback from a connected computer or phone through USB. Charging, service ports and USB flash-drive playback do not qualify.

Not available

No4Reviewsoundguys.com/jbl-go-4-review-117126Read 8 October 2026Review explicitly says Bluetooth is the only audio connection, no wired audio input.

USB drive playbackiPlayback of audio files on a connected USB storage device.

Not available

Not available

USB audio file formats

Not available

Not available

PortsiPhysical speaker connectors. Record charging, audio input, power output and service roles separately. A shared microphone and guitar jack is one port. A combo jack that takes XLR and 6.35 mm plugs is 6.35 mm audio, and the role names XLR. Optical is a TOSLINK digital audio socket.

AHarman Kardon Onyx Studio 9

Connector	Count	Role
AC power	1	Mains power input and battery charging
3.5 mm audio	1	AUX audio input. The cable is not included
USB-C	1	Charge output for mobile devices, rated 5 V / 2.1 A max. Service port outside the US. On the US version it also plays MP3 files

Source2Owner's manualelmir.ua/response/product-instruction.phpRead 16 October 2026Guide shows a power cord, a section on playing music through an audio cable (cable not included) and a USB-C powerbank section. Tech spec: USB audio playback is for the US version only. Other versions use USB for service only. Supported file format mp3.6Measurementleclaireur.fnac.com/test/589784-test-labo-harman-kardon-onyx-studio-9Read 16 October 2026Back panel: mains cable, auxiliary input and a USB-C port that only charges another device.

BJBL Go 4

Connector	Count	Role
USB-C	1	Charging input

Source3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwc984891f/pdfs/PA_JBL_GO%204_QSG_Global_SOP.pdfRead 8 October 2026QSG charging diagram confirms one USB-C charging connector. No audio-input role assumed for charging connector.

Controls and software

3 of 8 differ

SpeakerphoneiBuilt-in microphone and call support, through a connected phone or a voice assistant's calling. A microphone used only for voice commands does not count. Microphone inputs for karaoke are separate.

No7Retailer pageldlc.pro/fr-be/fiche/PB00671696.htmlRead 16 October 2026Retailer spec table lists built-in microphone: no and no voice assistant.

No4Reviewsoundguys.com/jbl-go-4-review-117126Read 8 October 2026Review explicitly states no microphone for phone calls.

Voice assistantsiVoice assistants explicitly usable through the speaker, such as Amazon Alexa, Google Assistant, Siri or Sonos Voice Control. State whether a connected phone is required.

Not available

Not available

Controls

Power, Bluetooth pairing, Volume up and down, Play/pause, next and previous track (one, two or three presses), Auracast multi-speaker connection2Owner's manualelmir.ua/response/product-instruction.phpRead 16 October 2026Bluetooth pairing, music streaming (one press, two presses, three presses), Auracast multi-speaker connection and a reboot by holding for more than 10 seconds.5Reviewt3.com/tech/bluetooth-speakers/harman-kardon-onyx-studio-9-reviewRead 16 October 2026Top controls handle on/off, separate volume up and down, play/pause, Bluetooth connection and a separate Auracast button.

Power, Bluetooth pairing, Auracast pairing, Play/pause, Volume up/down4Reviewsoundguys.com/jbl-go-4-review-117126Read 8 October 2026Review describes power, Bluetooth and Auracast controls and raised playback controls. Flip 7 and Charge 6 review action table identifies volume and play/pause buttons. Buttons are separate from app controls.8Reviewsoundguys.com/jbl-clip-5-vs-jbl-go-4-which-bluetooth-speaker-is-the-best-118579Read 8 October 2026How do you control section describes raised playback controls plus recessed power, Bluetooth and Auracast buttons. Exact generation comparison.

Companion app

Harman Kardon One1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Harman Kardon One app.

JBL Portable1Maker product pagejbl.com/GO-4.htmlRead 8 October 2026Maker explicitly names JBL Portable.

App platforms

Android, iOS12Reviewcellphones.com.vn/sforum/danh-gia-harman-kardon-onyx-studio-9Read 16 October 2026Review says the Harman Kardon One app works on Android and iOS.

Not available

User firmware updates

Yes2Owner's manualelmir.ua/response/product-instruction.phpRead 16 October 2026Use the Harman Kardon One app for speaker configuration and software upgrade.

Yes3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwc984891f/pdfs/PA_JBL_GO%204_QSG_Global_SOP.pdfRead 8 October 2026APP instruction says use JBL Portable for speaker configuration and software upgrade.

Built-in lightingiDecorative or ambient lighting. Status, battery, connection and microphone indicator LEDs alone do not qualify.

Not available

Not available

Lighting modes

Not available

Not available

Smart home

None of 3 known

Matter controlleriCan add and control Matter devices. Being a Matter device alone does not count.

Not available

Not available

Thread border routeriConnects Thread smart home devices to the home network.

Not available

Not available

Zigbee hubiA built-in Zigbee radio that controls Zigbee smart home devices.

Not available

Not available

Battery and charging

10 of 17 differ

Built-in battery

Yes1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Built-in rechargeable battery.

Yes2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Technical Specifications explicitly documents the built-in lithium-ion polymer battery.

Playback time (claimed)iMaximum maker-claimed music playback on one charge in normal playback mode. Battery extension or reduced-bass boost modes belong in battery_life_boost_h. Record volume and lighting conditions in the source note.

8h1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Up to 8 hours, depending on volume level and audio content. No test volume is stated.

7h2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Technical Specifications up to 7 h, dependent on volume level and audio content. Normal mode. Playtime Boost runtime is separate.

Playback with battery extension (claimed)iTotal claimed runtime with the named battery extension mode enabled. Store the total, not only the extra hours. Keep sound and lighting restrictions in the source note.

Not available

9h2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Total up to 9 h with Playtime Boost. Normal 7 h plus up to 2 h. Reduced bass and changed EQ documented by SoundGuys. Volume and content still affect runtime.

Battery energyiPublished battery pack energy. Do not calculate from an assumed voltage.

17.15Wh1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Sheet says Li-ion 17.15 Wh. The Fnac lab and an Amazon-based retailer listing give 17.14 Wh. 3.63 V times 4722 mAh is 17.14 Wh.

3.23Wh2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Literal published pack energy. No cell voltage assumed.

Battery capacityiPublished pack capacity at the voltage in battery_voltage_v. Do not substitute power-bank output capacity. A figure written per cell, such as 5000mAh*2, is not a pack capacity unless the maker states the pack figure.

4,722mAh1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Published as equivalent to 3.63 V / 4722 mAh.

850mAh2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Literal published capacity at the stated nominal pack voltage. Not power-bank output capacity.

Nominal battery voltage

3.63V1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Published as equivalent to 3.63 V / 4722 mAh.

3.8V2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Literal nominal pack voltage published alongside Wh and mAh.

Battery chemistry

Lithium-ion1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Li-ion.

Lithium-ion polymer2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Technical Specifications identifies lithium-ion polymer.

User-replaceable batteryiBattery that the maker documents as replaceable by the user. Service replacement does not qualify.

Yes3Press releasenews.harmankardon.com/en-GB/245491-harman-kardon-onyx-studio-9-combines-timeless-design-with-innovative-new-featuresRead 16 October 2026Press release lists a consumer replaceable battery. The replacement method is not described.

Not available

Full charge timeiTime from discharged to full under the maker conditions. Adapter rating and simultaneous use belong in source notes.

4h1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 20264 hours. The speaker charges from its AC power cable.

3h2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Technical Specifications full charge time. 5 V / 1 A input condition.

Quick charge duration

Not available

Not available

Playback after quick chargeiClaimed music playback after quick_charge_min of charging. Source conditions apply.

Not available

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Charging input ratingiPublished speaker input voltage and current. An adapter rating alone does not establish device input.

100-240 V AC, 50/60 Hz1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Power supply 100-240 V AC, 50/60 Hz. No input current is published.

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Max charging inputiPublished maximum charging input. USB audio power requirements and adapter output are separate.

Not available

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USB Power Delivery charging

Not available

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Charges other devices

Yes1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026The USB charging port recharges a mobile device. Rating 5 V / 2.1 A (max). No watt figure is stored.2Owner's manualelmir.ua/response/product-instruction.phpRead 16 October 2026Powerbank section. The charging cable is not included.

Not available

Max power-bank outputiPublished power delivered by the speaker to another device. Output voltage and current belong in the source note.

Not available

Not available

Wireless chargingiThe speaker battery can be charged wirelessly. Wireless power output to another device is separate.

Not available

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Durability

2 of 5 differ

Dust and water ratingiExact published IP rating. Keep separate ratings, such as IP68 and IP69, as separate entries.

Not available

IP671Maker product pagejbl.com/GO-4.htmlRead 8 October 2026Exact published IP rating. QSG specifies 1 m immersion for 30 minutes.

Floats

Not available

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Drop resistanceiExplicit maker claim or defined drop test. Do not infer from rugged wording.

Not available

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Drop test heightiMaker-published tested height. Surface and conditions belong in source notes.

Not available

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Carry featuresiPublished handles, straps, carabiners or wheels.

Integrated handle1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Integrated handle, made with 90% recycled aluminum.

Integrated carry loop1Maker product pagejbl.com/GO-4.htmlRead 8 October 2026Maker describes the integrated or supplied carry accessory.

Measured

3 of 6 differ

Playback time (measured)iReviewer-measured playback per charge. Volume, lighting, sound mode, firmware and connection belong in the source note.

11.65h6Measurementleclaireur.fnac.com/test/589784-test-labo-harman-kardon-onyx-studio-9Read 16 October 2026Labo Fnac measured 11 h 39 min on average over two measurements at 70 dB at 50 cm from the speaker. This is far above the 8 hour claim because the test volume is low. Review published 18 April 2025.

10.9h6Measurementtechgearlab.com/reviews/audio/bluetooth-speaker/jbl-go-4Read 8 October 2026Battery paragraph explicitly 10 h 54 min. Review updated May 29, 2026. General method fully charges battery and loops pink noise at 75% volume until shutdown. Firmware, EQ and Playtime Boost state are not specified for the individual run. Pink noise is different from the maker music-playback claim.7Measurementtechgearlab.com/topics/audio/best-bluetooth-speaker/how-we-testRead 8 October 2026Battery method: 100% charge, 75% volume, loop pink noise until shutdown, record time to minute. Individual speaker sound mode and firmware not stated.

Max sound pressure (measured)iReviewer-measured maximum SPL. Distance, test method and power source belong in source notes.

Not available

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Low-frequency extension (measured)iReviewer-measured low-frequency limit. Threshold and test method belong in source notes.

63Hz6Measurementleclaireur.fnac.com/test/589784-test-labo-harman-kardon-onyx-studio-9Read 16 October 2026Lab says the bandwidth covers 63 Hz to 20 kHz. Anechoic chamber, Bluetooth source, no audio profiles or settings active. The level threshold is not stated.

Not available

High-frequency extension (measured)iReviewer-measured high-frequency limit. Threshold and test method belong in source notes.

20kHz6Measurementleclaireur.fnac.com/test/589784-test-labo-harman-kardon-onyx-studio-9Read 16 October 2026Lab says the bandwidth covers 63 Hz to 20 kHz. The level threshold is not stated.

Not available

Audio latency (measured)iReviewer-measured source-to-speaker latency. Source device, app, codec, firmware and connection belong in source notes. App compensation may affect results.

Not available

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Full charge time (measured)iReviewer-measured time from empty to full. Power adapter and method belong in the source note.

Not available

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Dimensions and weight

3 of 3 differ

DimensionsiSpeaker body width, height and depth on explicitly identified axes. Unlabeled tuples do not establish axis meanings. Handle, strap and orientation conditions belong in the source note.

Width289.2Height287.5Depth130mm(11.4 × 11.3 × 5.1 in)1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Product dimensions are listed as width x height x depth: 289.2 x 287.5 x 130 mm. Package is 312 x 322 x 172 mm.

Width94.3Height75.7Depth42.2mm(3.7 × 3 × 1.7 in)2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Technical Specifications explicitly labels W x H x D. Literal mm body dimensions. Packaging dimensions excluded.

WeightiSpeaker mass including its battery. Excludes packaging, charger and removable carry accessories unless the source states otherwise.

3,360g(7.4 lb)1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Net weight 3.36 kg and gross weight 4.2 kg. Swiss and French retailers list the speaker at 3.33 kg and the Fnac lab says 3.3 kg. Package weight is 4.2 kg.

Not available

Body materials

Aluminum frame, Fabric, Silicone buttons1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Integrated aluminum frame, fabric and silicone buttons on top. The handle is made with 90% recycled aluminum.

Post-consumer recycled plastic, Recycled fabric grille5Press released21buns5ku92am.cloudfront.net/68766/documents/53768-1704707414-CES%202024%20JBL%20Portables%20Press%20Release%20EMEA%20Final%20v08.01-953b83.pdfRead 8 October 202670% PCR plastic for Clip 5 and 80% for Go 4. Both have 100% PCR fabric grilles. Percentage describes relevant material content, not total speaker mass.

Certifications

None of 1 known

FCC IDs

Not available

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Other certifications

Not available

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In the box

1 of 1 differ

In the box

Harman Kardon Onyx Studio 9, Power cable, Quick start guide, Safety sheet, Warranty card1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Box list: speaker, power cable, quick start guide, safety sheet and warranty card. The audio cable is not included.

JBL Go 4, USB Type-C cable, Quick start guide, Warranty card and safety sheet2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Maker box list. USB Type-C cable included. No power adapter in maker box inventory.

Links

Not compared

Product page

Not available

www.jbl.com/GO-4.html1Maker product pagejbl.com/GO-4.htmlRead 8 October 2026Exact model product page. Hardware details refer to this generation, not a Wi-Fi sibling or earlier model. Codec and passive-radiator claims conflict between reliable secondary sources, so those fields are omitted.

Spec sheet

www.regard.ru/api/site/files/goodspdf/download/113321Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026

www.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdf2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw9308649c/pdfs/JBL%20Go%204_%20Specsheet_EN.pdfRead 8 October 2026Maker English spec sheet, both pages opened. Technical Specifications and Features and Benefits checked.

Manual

elmir.ua/response/product-instruction.php2Owner's manualelmir.ua/response/product-instruction.phpRead 16 October 2026Quick start guide in many languages, hosted by a retailer. No full owner's manual was found on a readable host.

www.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwc984891f/pdfs/PA_JBL_GO%204_QSG_Global_SOP.pdf3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwc984891f/pdfs/PA_JBL_GO%204_QSG_Global_SOP.pdfRead 8 October 2026Exact generation maker Quick Start Guide. Downloaded and text extracted locally after web reader failed. English TECH SPEC page 9. QSG net mass 0.192 kg conflicts with datasheet 0.19 kg. Neither calls the value approximate, weight omitted.

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.

Not available

Not available

Warranty

None of 1 known

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.

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Both are also in the API. Back to all wireless speakers.