Harman Kardon Onyx Studio 4


Portable Bluetooth Speaker

$449.95449.95 each

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Elegant design full of features and superior sound

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.


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


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


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)
Click here for a complete list of all specs for this product

Spec Sheet (EN)

English 709 KB
  • 1 x Harman Kardon Onyx Studio 4
  • 1 x Power adaptor
  • 1 x Quick start guide
  • 1 x Safety sheet
  • 1 x Warranty card

1 Year

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

Purchases made from an unauthorized dealer will not be eligible for exchange.

Call us: 1.800.336.4525

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  • Parts and accessories
Harman Kardon Onyx Studio 4 is rated 4.4 out of 5 by 16.
Rated 5 out of 5 by from This thing is Amazing I bought this at Best Buy and this thing is amazing. Great sound, super easy to connect and awesome battery life. I am planning to get another one to pair with it for my computer at the home office. I love to play music pretty loud and this thing does the trick!
Date published: 2017-11-15
Rated 5 out of 5 by from BASS. BLUE TOOTH. SYNC QUICK AND EASY my friend came across a very used Harman kardon onyx speaker. wow! it is so loud clear great sound. we use it for our christmas parties and new years outside...its all we need ! SO PERFECT! SAVING FOR A NEW ONE. NOT THAT WE NEED IT. I WANT MY OWN LOL SINCERELY, FRANICE de LEON
Date published: 2017-10-29
Rated 5 out of 5 by from Great durable speaker! For a long time I was buying cheap speakers here and there, but my sister and I decided to buy two of these and ITS amazing for when we have parties at our house, track meets, and so much more! 10 out of 10 highly recommend
Date published: 2017-10-10
Rated 5 out of 5 by from Excellent Since I received the speaker I havent stopped listening to music. The sound is so clear and the bass is amazing for size of speaker I think. But I find that the quality of sound of the music to begin with must be good to be able to enjoy the speakers full potential. Excellent I love it, take it round the house with me.
Date published: 2017-10-05
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
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Can I stream music from my pioneer Bluetooth-able system  to use these as rear surround sound speakers? I’m in an apartment and can’t wire rear speakers.  

Asked by: Porge
It would depend if your Pioneer system is able to connect to the Onyx studio 4 and designate it as a rear surround speaker , If your Pioneer system can do that then it would be no problem.
Answered by: Mario at Customer Service
Date published: 2017-11-16

Good day. Where do I download the Harman Kardon Onyx Studio driver software for Windows 7? Regards

Asked by: Banzi
Any drivers or updates for the Onyx Studio 4 can be downloaded from the HK Connect App. If your Windows 7 device supports Bluetooth A2DP 1.3, then no drivers would be necessary, else this is something you can download on Microsoft's website or with the help of the manufacturer of your device. if this did not help, 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: Steve S
Date published: 2017-11-16

I just bought this speaker. So i have a few questions. First, should i charge before using it? Second, how many hours are needed to be fully charged when it is run out of charge?

Asked by: Eray2k
We would recommend that you drain the initial factory charge, then charge it overnight or for at least 5 hours.
Answered by: Steve S
Date published: 2017-11-17

Can i use 220V power supply with the onyx 4?

Asked by: jdm2
Yes, you can safely use the Onyx Studio 4 on a 220V power supply, since it has a power supply cable that is capable from 100V-240V.
Answered by: Steve S
Date published: 2017-11-16

I want to purchase two Studio 4s and use them in stereo mode. If I turn them off and then turn them back will they automatically be in stereo mode again or will I need to reconnect them in stereo mode every time I turn them on?

Asked by: Curious Tim
No need to reconnect them in stereo mode as once they're turned off and turned back on again it will still play in stereo mode. If you want to change it back to party mode, you will need to change the setting on the HK Connect+ app.
Answered by: Mario at Customer Service
Date published: 2017-11-16

1. if connected to power 24h 7days, is it ok? i want to use it as a pc speaker. will battery charging stop automatically and work as if non-portable speaker? 2. can two onyx4 work as stereo from pc(not smart device)?

Asked by: donuts
It is safe to have the speaker connected to an electrical outlet 24/7, however this is not what a portable speaker is designed for. We have comparable speakers that are not portable and have to be connected to an electrical source for use. The stereo mode is only available through the HK Connect App.
Answered by: Steve S
Date published: 2017-11-16

Are the foot pegs (little legs on the back) removable? I want to be able to carry the speaker in a slim-fit bag but the pegs would appear to be in the way. Thank you.

Asked by: Shawn1
Unfortunately the legs cannot be removed as these are designed for Home use.
Answered by: Mario at Customer Service
Date published: 2017-11-16

i puchased 2 onyx 4s, a i have latency even throught aux . im trying to use this as studio speakers and its bugging me so bad because i love the versatility and sound quality ,im upset only because of the not knowing before purchasing two.please help!

Asked by: Shaq
I have the same problem with 2 new onyx 4, I have connected the jack 3.5 from PC output. I've also used youtube from my phone, but the same latency. If I unpair them, the sound from my PC is OK (on a single item), ... I am not able to have stereo on both :(. Please make the fix public because I think the issue is common.
Answered by: Lucian Zamfira
Date published: 2017-11-16
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