Name: Harman Kardon Onyx Studio 9 Black
Brand: Harman Kardon
SKU: 957570
Price: 194 EUR
Availability: InStock
Rating: 9 (4 reviews)

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Product information
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Specifications

Product information

Key specs

	Weight	4,2 kg
	Wireless speaker size	Large (25 - 40cm)
	Built-in WiFi
	Controls via app
	Water-resistant

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Pros and cons

According to our Bluetooth speaker expert

The Constant Sound Field technology provides a wide sound range, so you can hear many details in the music.
Because the speaker adjusts the sound to every room, you can listen to full and detailed sound in every room.
With the 8-hour battery life, you can listen to music the entire afternoon without problems.
The speaker isn't dust-resistant and water-resistant, so you can't place it outside.

Description

With the Harman Kardon Onyx Studio 9 Black, the music sounds like you're there to hear it live. The speaker has a 3-channel system with the Constant Sound Field technology. Thanks to this, it distributes the sound over 3 channels and wide into the room. This allows you to hear many details in the music. The speaker automatically adjusts the sound to every space. Thanks to this, you can listen to full and detailed sound. With the 8-hour battery life, you can listen to music for an entire afternoon. Thanks to the built-in power bank, you can charge your smartphone with the speaker. This way, you're not often without music. You can connect to multiple speakers via Auracast, so you can hear more powerful sound.

Tips for using this product

This is what you get

Charger

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Reviews
Sound reproduction
- Stereo
- 360 degrees
- Stereo
- Stereo

Integrated power bank

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Reviews

Rating

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Most helpful reviews

Review is 8,3 out of 10.

Good product.

Beautiful Design
Good sound

For the sound, you do need to update the product in the app, which makes a difference. To achieve a wider stereo image, I bought two. Because I found the bass sounding a bit muddy, I turned it down a bit in the app. Afterward, the speakers sounded much tighter.

Review by:
Ron.
Date:
17 February 2026
Translation:
Automatically translated from Dutch

Insure your Bluetooth speaker

Receive more coverage in case of damage than with your standard warranty. Coolblue takes care of everything: from taking out the insurance to repairs. Is a repair not possible? You receive the purchase price as CoolblueCredit.

What am I insured for?

Fall and impact damage
Water damage
Manufacturing defects outside the warranty

What am I not insured for?

Damage you deliberately cause
Damage that doesn't affect the product functioning (such as scratches)
Damage due to gross negligence

XCover insurace

XCover is allowed to arrange and process insurances on behalf of the insurer. The insurances are governed by Belgium law. If you have a complaint, you can contact the or our customer service.

How do I insure my Bluetooth speaker?

First, add your Bluetooth speaker to your shopping cart. On the next page, choose the Protection Plan below. You always have a 30-day return window and pay no deductible in case of damage.

XCover Protection without theft cover

3-year advance payment
12,99 one-time payment (4,33 per year)
2-year advance payment
7,99 one-time payment (4,- per year)

The insurance can be canceled every year, even if you have paid in advance. If you cancel earlier, you will receive a refund for the overpaid amount.

Specifications

Product

Product
	Product number	957570
	Manufacturer code	HKOS9BLKEP
	Brand	Harman Kardon
	Warranty	2 years
	Processing of your defect	Via Coolblue

Physical properties

Physical properties
	Speaker type	Bluetooth speaker
	Width	28,9 cm
	Depth	13 cm
	Height	28,7 cm
	Wireless speaker size	Large (25 - 40cm)
	Weight	4,2 kg
	Color	Black
	Integrated light effects
	Built-in microphone

Power supply

Power supply
	Integrated power bank
	Average battery life	8 hours

Network and streaming

Network and streaming
	Bluetooth
	Built-in WiFi
	NFC
	Multi-room audio
	Plays from network
	Radio
	Headphone jack
	Sound reproduction	Stereo

Controls

Controls
	Controls via app
	Controlled via buttons on device
	Remote control

This is the one

Harman Kardon Onyx Studio 9 Black

Review is 9,0 out of 10, based on 4 reviews.

anything for a smile

Ordered before 23:59, delivered tomorrow for free

11 stores

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Harman Kardon Onyx Studio 9 Black

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