Harman/Kardon

Harman Kardon Onyx Studio 4

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Item# HKOS4BLUAM
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$249.99249.99 each $449.95 Save $200
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General Specifications

Support A2DP 1.3, AVRCP 1.6, HFP 1.6
Transducers Woofer 2 x 75mm, Tweeter 2 x 20mm
Rated Power 4 x 15W (AC mode); 4 x 7.5W (Battery mode)
Frequency response 50Hz - 20kHz (-6dB)
Signal to noise ratio 80dB A-weighted
Weight: 2061g Yes

Dimensions

Dimension (H x W x D): 260mm x 278mm x 159.5mm Yes

Control and Connection Specifications

Bluetooth version: 4.2 Yes
Bluetooth transmitter power 0 - 9dBm
Bluetooth transmitter frequency range 2402MHz - 2480MHz
Bluetooth transmitter modulation GFSK, π/4 DQPSK, 8DPSK

Battery

Power supply 19V/2A
Battery type 3.7V/3000mAh Lithium-ion
Battery charge time 5 hours
Music playtime up to 8 hours (Varies by volume level and music content)
  • 1 x Harman Kardon Onyx Studio 4
  • 1 x Power adaptor
  • 1 x Quick start guide
  • 1 x Safety sheet
  • 1 x Warranty card
Providing the perfect balance of great sound, iconic design, and premium materials, the Onyx Studio 4 is the epitome of room-filling audio. Crafted to be the best sounding, full featured, portable Bluetooth speaker in its class, the Onyx Studio 4 offers two device connections, 8 hours of playtime and Harman Kardon Connect+, which allows you to connect 100+ speakers with the same feature with the touch of a button. Rounding out the Onyx Studio 4 offerings is a built-in microphone with Voicelogic, echo and noise cancellation for crystal-clear conferencing over the speaker.

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1 Year

Products purchased online or from an authorized local retailer and under warranty may qualify for an exchange with a valid receipt.

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Harman Kardon Onyx Studio 4 is rated 4.2 out of 5 by 184.
Rated 5 out of 5 by from Superb! Update! After 8 months of having a pair of Onix 4's I am even more delighted than I was when I bought first one! If you plan to buy a home hi-fi without breaking a bank, my advice is to buy these. Position them as far away from the wall (to reduce not so controlled bass), remove the grills (to gain 1db in hf range), use app to pair them in stereo mode (for soundstage), tilt them (like studio monitors for imaging) and keep those tweeters at ear level (for detailed sound)... You won't believe what sound quality these bt speakers can produce. Now at 360 USD for a pair (in Europe), I can't find anything even close... Pure madness!
Date published: 2018-08-19
Rated 5 out of 5 by from Awesome Speaker My hubby bought this speaker just to try it out (we usually get Bose), after I suggested he try Harman Kardon since they made speakers for some Mercedes Benz models. This speaker delivers awesome sound quality. The bass is crazy!! (And I mean the good crazy) My sons love it so much they're purchasing their own. I also love that more than one person can connect to the bluetooth at one time, and that you can sync several of these together. Imagine having a party with these babies!! I'm very happy with this purchase. Glad we bought it. Now to try out the headphones.
Date published: 2018-03-31
Rated 2 out of 5 by from Poor Bluetooth connectivity Great audio quality, but poor Bluetooth connectivity. This speaker just support SBC Bluetooth codec, does not support any high quality codecs. To get battery level (on android or apple), you must install HK app, share location, and wait 10 seconds for it to sync, because it creates a separate LE connection for just that. Can you please fix that ? Either implement HFP1.7, or the Apple "Bluetooth Headset Battery Level Indication". If you can't do that, at least use standard LE "Battery Service" rather than custom notification. Please fix the battery level in next firmware update.
Date published: 2017-11-29
Rated 5 out of 5 by from If they could correct battery/charging issues... These would be best in class, period! One "solution" I found for the battery endurance issue was to buy a 20,000 mAh power bank that is capable of 19v output. The one I bought comes with several different size adapters that will plug into the OS4. Power conversion will eat a fair amount of power (unavoidable for ANY power bank), but what is left allows me to run the speaker at full volume for no less than 5 hours! It is as if the speaker were plugged into the wall electrical outlet.
Date published: 2018-08-25
Rated 5 out of 5 by from The Best Bluetooth Speaker No other bluetooth speaker can compare to this masterpiece, perfect sound quality and with the easy link to other speakers, you can create easy surround sound. It's got a price tag, but the bang is worth the buck. The only problems I've experienced is an every once in a while skipping type sound. It's not my music I think, but I'm going to look into it. The speaker is still worth it overall, as I said, literally nothing can compare to this speaker.
Date published: 2017-12-26
Rated 5 out of 5 by from Great mid-range bt speaker! In Europe is priced at 200 euros and it's hard to find anything better in that price range. Balancing it with some eq is a must, otherwise bass is way too overwhelming, mids are recessed and highs are not well pronounced... But when you play with it for a few days, man it shines! Nice sound stage, punchy bass, good mids, solid highs and even some stereo separation... Planing to buy another one these days. That should be impressive!
Date published: 2018-01-16
Rated 5 out of 5 by from Amazing I got this for birthday present 5 days ago. I have no words. I really love the high quality products, the high quality music. The design, the sound, everything is perfect. Crystal clear highs, very powerful basses. Very detailed soundscape. This is the best in this price range ( in Hungary it's just 200$ ). I have in blue colour, really nice! Fully recommended speaker! :)
Date published: 2017-09-03
Rated 5 out of 5 by from Earlier Onyx Studio Purchased an earlier Onyx Studio at a SPRINT store. As I walked in to the store(approx. 1200 sq ft), music was playing quite loud and I thought that the sound was coming from the store's sound system. The music filled the store with rich bass, not the thump, thump that you commonly hear from this type of speaker. What was even better was that it was on sale due to packaging damage! Should have purchased 2!
Date published: 2017-08-14
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i have heard this speaker have HK Connect ±. In one video i have seem someone pairing this with JBL Flip 4 using JBL connect plus function. Am asking whether is is capable of connectinh to modern JBL speakers with connect plus eg Xtreme or Boombox

Asked by: Enock
We would like to work with you directly to help you with your issue. Please submit a case request at https://www.harmankardon.com/support-contact.html and the Customer Service Team will be more than happy to assist you.
Answered by: Mario at Customer Service
Date published: 2019-03-22

Can I connect 2 Onyx Studio 3 with 2 or more Onyx Studio 4?

Asked by: Alexander Munoz
Unfortunately, you would not be able to pair a Harman/Kardon Onyx Studio 3 with an Onyx Studio 4. This is because the Dual Wireless Sound featured in the Onyx Studio 3 only gives you the capability to connect to a second Onyx Studio 3 since the wireless dual sound feature only works on the same model. And the Onyx Studio 4 has a different connect feature called HK Connect that uses an app to connect the speaker to another speaker that has the same feature.
Answered by: Rhae C
Date published: 2019-03-15

I need an owners manual for this product. Is it available online, or could you please send me a link? Thank you.

Asked by: Anonymous
Please see link below for the spec sheet for our HK Onyx Studio 4.  https://www.harmankardon.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwcef92fe7/pdfs/HK_Onyx_Studio4_Spec_Sheet_EN.pdf
Answered by: Rhae C
Date published: 2019-03-15

Is there a software update for this speaker, and how do I know when its actually charging?

Asked by: CeCeRayne
As of the writing of this response, there are no software updates for the Onyx Studio 4. Updates are generally available on the HK Connect app, available at the Play Store and App Store. If you are looking for an update due to a certain feature or experience with your Onyx Studio 4, please let us know by contacting us through our Contact Us page. The Onyx Studio 4 has an indicator light by the Power button that is blinking white if it is charging.
Answered by: Steve S
Date published: 2019-03-02

Hello I have just plugged my Harman Kardon to charge it was completely flat, does it make a pulsing sound while charging?

Asked by: Chuk67
We would like to work with you directly to help you with your issue. Please submit a case request at https://www.harmankardon.com/support-contact.html and the Customer Service Team will be more than happy to assist you.
Answered by: Mario at Customer Service
Date published: 2019-03-08

can we pairing onyx studio 3 with onyx studio 4 ?

Asked by: harly
No, the Onyx studio 4 has the connect+ which can connect to Connect +devices while the Onyx studio 3 has the wireless dual sound which can only pair with other wireless dual sound speaker..
Answered by: Mario at Customer Service
Date published: 2019-02-18

Please how many hours does it take to charge

Asked by: Steven17
It takes 5 hours to fully charge it from 0%
Answered by: Mario at Customer Service
Date published: 2019-02-10

I bought Onyx Studio 4 and noticed that if any connected device is silenced for about 5 seconds, the speaker just turned off by itself and then delayed turn on (about 2 sec) if the connected devices sends audio signal. How to disable this behaviour?

Asked by: akasection
We would like to work with you directly to help you with your issue. Please submit a case request at https://www.harmankardon.com/support-contact.html and the Customer Service Team will be more than happy to assist you.
Answered by: Mario at Customer Service
Date published: 2019-02-24
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