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Harman Kardon Onyx Studio 9

Harman KardonPortable wireless speaker

Onyx Studio 9

Released November 2024.4Press articlephileweb.com/sp/news/d-av/202410/31/61425.htmlRead 16 October 2026Report says Harman Kardon Onyx Studio 9 goes on sale in Japan on 7 November 2024. A Japanese retailer page also dates its listing 7 November 2024. UK sales began in February 2025. The earliest sale is used. Last checked 21 October 2026.

Rated audio power
50W
Playback time (claimed)
8h
Dust and water rating
Not available
Weight
3,360g

54 of 96 fields known.

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At a glance

Ports

  • AC power
  • 3.5 mm audio
  • USB-C

All specs

SourceCalculated

General

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.
Model numbers
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.
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.
Announced
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.
Status
Available5Reviewt3.com/tech/bluetooth-speakers/harman-kardon-onyx-studio-9-reviewRead 16 October 2026Review lists current retail offers.
Predecessor
Not available
Successor
Not available
Launch price (US)
$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.
Launch price (EU)
Not available
Markets
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.
Colours
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.
Speaker 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.

Audio

Audio channels
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.
Audio drivers
Driver typeCountDiameter (mm)
Woofer1120
Tweeter320
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.
Passive radiators
Not available
Rated audio power
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.
Rated audio power on mains
Not available
Audio output power (unspecified rating)
Not available
Peak audio power
Not available
Frequency response lower limit (claimed)
50Hz1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 202650 Hz to 20 kHz at -6 dB.
Frequency response upper limit (claimed)
20kHz1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 202650 Hz to 20 kHz at -6 dB.
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.
Adjustable equalizer
Yes1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026The Harman Kardon One app customizes the EQ.
Equalizer bands
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.
Automatic sound adjustment
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.
Sound modes
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.
Wireless stereo pairing
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.
Speaker link protocols
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.
Max linked speakers
Not available
Max Bluetooth group speakers
Not available

Connectivity

Bluetooth audio playback
Yes1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026
Bluetooth version
5.31Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Bluetooth 5.3.
Bluetooth codecs
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.
Bluetooth LE Audio
Not available
Auracast
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.
Multipoint
Yes1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Pairs with up to two mobile devices simultaneously.
Multipoint source devices
22Owner's manualelmir.ua/response/product-instruction.phpRead 16 October 2026Multi-point connection section: maximum 2 devices.
Bluetooth range (claimed)
Not available
Wi-Fi
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.
Wi-Fi standards
Not available
Network audio protocols
Not available
USB audio input
Not available
USB drive playback
Not available
USB audio file formats
Not available
Ports
ConnectorCountRole
AC power1Mains power input and battery charging
3.5 mm audio1AUX audio input. The cable is not included
USB-C1Charge 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.

Controls and software

Speakerphone
No7Retailer pageldlc.pro/fr-be/fiche/PB00671696.htmlRead 16 October 2026Retailer spec table lists built-in microphone: no and no voice assistant.
Voice assistants
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.
Companion app
Harman Kardon One1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Harman Kardon One app.
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.
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.
Built-in lighting
Not available
Lighting modes
Not available

Smart home

We could not find any of these 3 fields. Show them
Matter controller
Not available
Thread border router
Not available
Zigbee hub
Not available

Battery and charging

Built-in battery
Yes1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Built-in rechargeable battery.
Playback time (claimed)
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.
Playback with battery extension (claimed)
Not available
Battery energy
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.
Battery capacity
4,722mAh1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Published as equivalent to 3.63 V / 4722 mAh.
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.
Battery chemistry
Lithium-ion1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Li-ion.
User-replaceable battery
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.
Full charge time
4h1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 20264 hours. The speaker charges from its AC power cable.
Quick charge duration
Not available
Playback after quick charge
Not available
Charging input rating
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.
Max charging input
Not available
USB Power Delivery charging
Not available
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.
Max power-bank output
Not available
Wireless charging
Not available

Durability

Dust and water rating
Not available
Floats
Not available
Drop resistance
Not available
Drop test height
Not available
Carry features
Integrated handle1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/11332Read 16 October 2026Integrated handle, made with 90% recycled aluminum.

Measured

Playback time (measured)
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.
Max sound pressure (measured)
Not available
Low-frequency extension (measured)
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.
High-frequency extension (measured)
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.
Audio latency (measured)
Not available
Full charge time (measured)
Not available

Dimensions and weight

Front and side, drawn to scale.

Dimensions
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.
Weight
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.
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.

Certifications

We could not find any of these 2 fields. Show them
FCC IDs
Not available
Other certifications
Not available

In the box

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.

Warranty

We could not find any of these 1 fields. Show them
Manufacturer warranty (source market)
Not available

Compare with

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Variants

Each variant lists only what differs from the specs above.

Model numberGTINLaunch price (US)MarketsColours
HKOS9BLKEP1200130014116Not availableEUClassic Black
HKOS9GRYEP1200130018237Not availableEUStone Grey
HKOS9BLKAMNot available$299.95USClassic Black

Sources

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

  1. Read 16 October 2026Backs 33 fields
  2. Read 16 October 2026Backs 7 fields
  3. Read 16 October 2026Backs 3 fields
  4. Read 16 October 2026Backs 3 fields
  5. Read 16 October 2026Backs 5 fields
  6. Read 16 October 2026Backs 5 fields
  7. Read 16 October 2026Backs 2 fields
  8. Read 16 October 2026Backs 3 fields
  9. Read 16 October 2026Backs 2 fields
  10. Read 16 October 2026Backs 2 fields
  11. Read 16 October 2026Backs 2 fields
  12. Read 16 October 2026Backs 2 fields

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