Harman Kardon Onyx Studio 9

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Overall

#47 in

Portable Bluetooth Speakers

according to Reddit Icon Reddit

Sentiment score74% positive
14
5
0
Last updated: May 7, 2026

Reddit Reviews

Reddit IconBeandip_Warrior
5 months ago

I only have the GP3 in HK speakers and it sounds great. I heard the Onyx sound great at lower levels decent bass if it’s at lower volume especially the 9. I only have the Ult Field 1 and its bass is decent for its size I’ve heard it has a deeper bass than the JBL charge 5.

Reddit IconC00lst3r
4 months ago

I got the HK Onyx 9 for half price and that speaker blows my mind. I’ll try bringing it to the beach with me in the summer.

Reddit IconDesperate_Stay_5899
5 months ago

It goes 30hz. Even the tiny 4.5inch woofer on hk onyx 9 has a bass peak at 34hz

5 months ago

hands down onyx 9. proper deep rumble at 30hz. it as a big bass peak at 52ish hz and a secondary peak at 34hz. I had onyx 6 for years and recently got onyx 9. both of these are like a subwoofer when you place the right. they even have proper deep bass even at 10% volume.

6 months ago

onyx 8 vs 9? I have heard people complaining about the onyx 9 crossover and how onyx 8 is louder and more boomy at low volumes

Reddit IconDragonheart1984
7 months ago

The 5 is an amazing speaker. I have the 5 and the 9. I've used the 5 a lot more than the 9. Generally speaking, for portable Bluetooth speakers, Harman is in a category of their own achieving such great sound at low wattage.

Reddit IconFinancial_Exam_2743
8 months ago

Onyx 9, good option. If you're lucky you can find 2 Onyx 8 and listen in stereo 

Reddit IconFish5
3 months ago

I have an Xtreme 2 and Harman Onyx Studio 9. The Onyx is a clear step up in clarity, fidelity and bass extension.

Reddit IconFoolhardyC
11 months ago

Honestly… they’re extremely similar in every aspect either way minor noticeable improvements on the 9 with the 3 tweeters instead of 2 on the 8 But the main thing for me is the 7 Band EQ available for the 9 on the app that really sets them apart

11 months ago

It’s about the same imo Clearer mids and better instrument separation on the 9 because of the extra tweeter but it’s a negligible improvement

Reddit IconFuckTesla69
3 months ago

I got an Onyx Studio 9 for Xmas and it's a blessing. Best sounding portable speaker I've ever owned. 200-300 bones on Amazon, but absolutely great sound.

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