Customer reviews from harmankardon.nl
Harman Kardon - Refurbished Excellent - Onyx Studio 8 Speaker, Black
Average customer rating
4.6
(159 Reviews)
Rating breakdown 159 reviews
5 Stars
127
4 Stars
13
3 Stars
9
2 Stars
5
1 Star
5
94%of customers recommend this product.
(
82 out of
87)
Customer Reviews for Harman Kardon - Refurbished Excellent - Onyx Studio 8 Speaker, Black
Customer Rating
4
{{7*7}}
on July 3, 2024
Posted by: hello1911
{{7*7}}good,this is not bad.gggggggggggggggggggggggg
Written by a customer while visiting harmankardon.nl
Customer Rating
3
Very Small Bluetooth Radius
on November 26, 2025
Posted by: moonmeg
The audio quality and bass is great. My biggest issue is the bluetooth feature. As soon as I leave the room the music starts to disconnect. Have never had a speaker with such low bluetooth radius. I don’t know if I just got a faulty product.
I would recommend this to a friend!
Response from harmankardon.nlBy Customer Support, November 29, 2025
Thanks for your feedback on our Harman Kardon Onyx Studio 8. Make sure that your source device and speaker are within the Bluetooth range of 10 meters. Also, please don't place the speaker too close to the Wi-Fi router and appliances like microwaves that can interfere with the connection. If the issue persists, we'd like to work with you directly to address the issues you're experiencing with your Harman Kardon Onyx Studio 8. Please contact our customer support.
Written by a customer while visiting harmankardon.nl
Customer Rating
5
HK NEVER DISAPPOINTS
on November 28, 2025
Posted by: J FLO33
from Texas
Gender:Male
HK never disappoints. Quality quality quality. That’s what you’re buying when you go HK. BMW knows this and so should you.
I would recommend this to a friend!
Written by a customer while visiting harmankardon.nl
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