Customer reviews from harmankardon.nl
Harman Kardon - Onyx Studio 8 Speaker, Black
Average customer rating
4.6
(186 Reviews)
Rating breakdown 186 reviews
5 Stars
145
4 Stars
19
3 Stars
10
2 Stars
6
1 Star
6
95%of customers recommend this product.
(
92 out of
97)
Customer Reviews for Harman Kardon - Onyx Studio 8 Speaker, Black
Customer Rating
3
Good speaker, some features could be better.
on April 13, 2026
Posted by: Visa
from San Francisco
Gender:Male
I bought a pair of onyx studio 8 around Black Friday last year. Previously I had onix studio 3 and 4. Overall is a great sound. It is a pain to synchronize them for stereo sound I have to reset and synchronize it every time. Besides that, one speaker stopped working, power failure.
Response from harmankardon.nlBy Customer Support, April 14, 2026
Thank you for reaching out. To activate Wireless Stereo Boost on our Onyx Studio 8. Turn on both speakers, then press and hold the Bluetooth button on the first Onyx Studio 8 for 5 seconds, then do the same on the second speaker to pair them together. Ensure that they are within 10 meters of each other. As for the other speaker, use a different charging cable, power adapter, and, while it's extremely uncommon, try to use another wall outlet to be certain that the issue is not with the outlet. Also, sand and dirt can get into the product's charging port. Clean the charging port with compressed air. If you need further assistance, please contact our customer support.
Written by a customer while visiting harmankardon.nl
Customer Rating
5
Graduated from the 4 to the 8.
on April 1, 2026
Posted by: Big Joe
from Atlanta, GA
Gender:Male
I bought my Harmon Kardon Onyx Studio 8 a month ago. And I am glad I did!
I would recommend this to a friend!
Written by a customer while visiting harmankardon.nl
Customer Rating
5
Awesome Bluetooth speaker.
on March 21, 2026
Posted by: Juancho
I absolutely love the sound from these speakers. I use it for music and meetings in my home office.
Written by a customer while visiting harmankardon.nl
Customer Rating
3
Studio 8
on February 20, 2026
Posted by: Catalyst
from California
Gender:Female
I like the sound when it works, however, sometimes the signal cuts out and it becomes weird and glitchy
I would recommend this to a friend!
Response from harmankardon.nlBy Customer Support, February 22, 2026
Thanks for your feedback. Bluetooth will perform well for up to 30 feet. However, walls, obstacles, and other wireless devices can impede that 30-foot range. If it works well at 10 feet or less, it is likely that there is something interfering with your wireless Bluetooth signal, causing these dropouts. Here are some troubleshooting steps that might help isolate the issue with your Harman Kardon Onyx Studio 8. Sometimes a Bluetooth connection can become corrupt, try to unpair and re-pair your Bluetooth connection. Next is reset, press and hold the Volume + and Bluetooth buttons simultaneously for more than 5 seconds, until the speaker powers off. You may need to 'forget' the speaker in Bluetooth settings on your phone/tablet in order to pair it again. If the issue remains, please contact us here: https://support.jbl.com/us/en/#contact
Written by a customer while visiting harmankardon.nl
Customer Rating
5
Solid Speaker A+
on February 3, 2026
Posted by: Quantum Jeff
from Toledo, OH
Gender:Male
Bought mine for Christmas! Tremendous value. Great sound. Good looking speaker. Very happy here!
I would recommend this to a friend!
Written by a customer while visiting harmankardon.nl
Customer Rating
5
Great sound!
on February 1, 2026
Posted by: Yitowen
I bought it a month ago. I’m so happy with this speakers, makes my days are better.
Written by a customer while visiting harmankardon.nl
Customer Rating
5
Phenomenal looks and sound quality!
on January 24, 2026
Posted by: Gman801
from Salt Lake City Utah
Gender:Male
The sound quality and finish of this Bluetooth speaker is simply phenomenal! I’ve never seem something this compact fill a room with such big and detailed sound! HK always brings the quality and durability. I’m so impressed with the unique design. Everyone who comes over comments on how great it looks and especially how it fills the room with beautiful music! If you have the chance to get one of these just do it!
I would recommend this to a friend!
Written by a customer while visiting harmankardon.nl
Customer Rating
4
Great sound hear me out before
on January 17, 2026
Posted by: Bintory
Gender:Male
I purchased to use with Roku TV , phone and sometimes outdoors. The lack of Roku TV to pair is not HK issue but definitely left me disappointed that HK don’t have Roku TV pairing with HK onyx studio9 with NO mic( pro or con)
I must admit the product is well built and clear sound notes will have an impact on you, with Pairing and ease of use with App is seamless.
I tried to cast on Roku thru Iph and send sound thru my phone thru HK( with Bluetooth)that didnt work either, unfortunately sound came only thru TV speakers and not HK. To conserve battery it keeps going to sleep, and needs a walk to speaker to wake up and to play your fav channel or genre.
I must admit the product is well built and clear sound notes will have an impact on you, with Pairing and ease of use with App is seamless.
I tried to cast on Roku thru Iph and send sound thru my phone thru HK( with Bluetooth)that didnt work either, unfortunately sound came only thru TV speakers and not HK. To conserve battery it keeps going to sleep, and needs a walk to speaker to wake up and to play your fav channel or genre.
I would recommend this to a friend!
Written by a customer while visiting harmankardon.nl