Customer reviews from harmankardon.nl
Harman Kardon - Refurbished Excellent - Onyx Studio 8 Speaker, Black
Average customer rating
4.6
(201 Reviews)
Rating breakdown 201 reviews
5 Stars
156
4 Stars
22
3 Stars
10
2 Stars
7
1 Star
6
94%of customers recommend this product.
(
99 out of
105)
Customer Reviews for Harman Kardon - Refurbished Excellent - Onyx Studio 8 Speaker, Black
Customer Rating
2
Battery doesn’t last long
on May 24, 2026
Posted by: D Brah
from California
Gender:Female
The battery dies too quickly, and the Sound is okay
Response from harmankardon.nlBy Customer Support, May 26, 2026
Thanks for your feedback. The published playtime for our Onyx Studio 8 reflects the maximum battery life at low volume with no bass boost. Higher volume levels and bass‑heavy audio will naturally reduce battery performance. To check whether the battery is functioning properly, fully charge the speaker and play music at very low volume with no bass enhancement. If the playtime is close to the advertised specification, the battery is performing normally. If you have any questions, please contact us directly at: https://support.jbl.com/us/en/#contact"
Written by a customer while visiting harmankardon.nl
Customer Rating
5
Special present
on May 9, 2026
Posted by: Pl1169
from Clermont, FL
Gender:Male
I bought Harman Kardon Onyx studio 8 ( the fourth one). Excellent speaker, clear sound, strong bass, hight recommend. I got very good deals . Thanks Harman Kardon.
I would recommend this to a friend!
Written by a customer while visiting harmankardon.nl
Customer Rating
4
on May 9, 2026
Posted by: Sachi
Worthy with the discounted price. It's One of my favourite brand.
Written by a customer while visiting harmankardon.nl
Customer Rating
4
OK
on May 7, 2026
Posted by: Buckpayton
from Ga
Gender:Male
Bass is kind of distorted as though it is cracked
I would recommend this to a friend!
Written by a customer while visiting harmankardon.nl
Customer Rating
5
Consistent Quality and Sound
on May 6, 2026
Posted by: Kristi
Gender:Female
Harman Kardon consistently delivers quality product with premium sound. I had a HK stereo in my car and have been loyal to HK stereos since!
Written by a customer while visiting harmankardon.nl
Customer Rating
5
Buy one!
on April 24, 2026
Posted by: freethinker1973
from Colorado Springs, CO
Gender:Male
If anything, buy this thing for the bass! What a great speaker! Sounds crisp on the high end and it hits hard when the volume is on.
I would recommend this to a friend!
Written by a customer while visiting harmankardon.nl
Customer Rating
4
Sound is very nice.
on April 22, 2026
Posted by: Stick
from Atlanta, Ga
Gender:Male
Sound is incredible. Great purchase. Very reasonable price.
Written by a customer while visiting harmankardon.nl
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