Customer reviews from harmankardon.nl
Harman Kardon - Onyx Studio 8 Speaker, Black
Average customer rating
4.6
(162 Reviews)
Rating breakdown 162 reviews
5 Stars
129
4 Stars
13
3 Stars
10
2 Stars
5
1 Star
5
94%of customers recommend this product.
(
83 out of
88)
Customer Reviews for Harman Kardon - Onyx Studio 8 Speaker, Black
Customer Rating
5
on December 4, 2025
Posted by: chevelle
Recent purchase very happy with my purchase , went back to purchase another and they were sold out.
I would recommend this to a friend!
Written by a customer while visiting harmankardon.nl
Customer Rating
5
Amazing sound - bigger than I had anticipated
on December 5, 2025
Posted by: planogreg
This is a Christmas present for my son, but I had to test it, to make sure it worked, and the sound is amazing! it is bigger than I thought it would be.. but that is probably why the sound is also "big"
Written by a customer while visiting harmankardon.nl
Customer Rating
2
on December 5, 2025
Posted by: chris775
can't access bass and treble controls, need help thanks
Response from harmankardon.nlBy Customer Support, December 5, 2025
Thanks for bringing this to our attention. We recommend using a third-party music app with a built-in equalizer to modify the bass and treble.
Written by a customer while visiting harmankardon.nl
Customer Rating
1
Stereo Boost Mode Won’t Stay Connected
on December 5, 2025
Posted by: DisappointedCustomer
from Opelika, AL
Gender:Male
I purchased two Harman Kardon Onyx Studio 8 units and tested them in stereo Boost mode. There’s a behavior that buyers should be aware of:
- Both speakers show solid white LEDs when Boost mode (stereo pair) is active.
- However, if Bluetooth disconnects and reconnects, stereo mode does not return.
- Only the primary speaker plays audio even though both units still display the Boost LED.
- The only way to restore stereo is to:
A. power-cycle both speakers, or
B. factory reset and manually pair them in Boost mode again.
- However, if Bluetooth disconnects and reconnects, stereo mode does not return.
- Only the primary speaker plays audio even though both units still display the Boost LED.
- The only way to restore stereo is to:
A. power-cycle both speakers, or
B. factory reset and manually pair them in Boost mode again.
HK support told me this is “normal and expected,” meaning stereo Boost mode must be manually reactivated every time Bluetooth reconnects. It was supposedly escalated, but I never received a follow-up.
Sharing this so others know before buying—persistent stereo pairing is not supported.
No, I would not recommend this to a friend.
Response from harmankardon.nlBy Customer Support, December 7, 2025
Thanks for sharing your feedback on our HK Onyx Studio 8. We value your input, and we'll make sure to forward your feedback to the appropriate team.
Written by a customer while visiting harmankardon.nl
Customer Rating
3
on December 5, 2025
Posted by: Troy61
Gender:Male
Bought one sounded great got another to stereo link worked a couple times but now they won't link. Still working on it. It shouldn't be this difficult.
Response from harmankardon.nlBy Customer Support, December 6, 2025
We appreciate your feedback on our HK Onyx Studio 8. To isolate the issue, please try moving the speakers closer to each other. Make sure that there are no other source of wireless signal nearby. Restart both of your speakers. If you need more help, please contact our customer support.
Written by a customer while visiting harmankardon.nl
Customer Rating
5
Much more than I expected
on December 5, 2025
Posted by: derekt
Gender:Male
I like this speaker. Great audio, well balanced between the low frequency, mids and high tones. I like how it is also powered by a cord and not rechargeable battery. Also a plus that this speaker can take calls or be used as an audio source for virtual meetings.
I would recommend this to a friend!
Written by a customer while visiting harmankardon.nl
Customer Rating
5
Onyx studio 8
on December 5, 2025
Posted by: Steven Pu
Onyx studio 8 is a great product with high quality sound and deep bass. I bought two of them to set up stereo env
I would recommend this to a friend!
Written by a customer while visiting harmankardon.nl
Customer Rating
5
Best speakers , best price, best company
on December 5, 2025
Posted by: JCProtraining
from Phoenix AZ
Gender:Male
I use a pair of these in my office and the link system is absolutely amazing. Stereo sound from 2 independent, powerful speakers. Pairing is simple and switching channels is as well. I've now had the Studio 2, 4 and 8 speakers and they have all been fantastic. I still use all of them.
I would recommend this to a friend!
Written by a customer while visiting harmankardon.nl