Harman/Kardon

Harman Kardon Onyx Studio 4

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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.

Item# HKOS4BLUAM

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)
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.

Harman Kardon does not service warranty claims for 3rd party products sold on the site.
You will need to need to reach out the manufacturer directly.

Call us: 1.800.422.8027

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Harman Kardon Onyx Studio 4 is rated 4.1 out of 5 by 129.
Rated 5 out of 5 by from AWESOME QUALITY OF SOUND! I bought two speakers & the sync up feature is just beautiful. LOUD for their size. So far, great value! This is one awesome product & a must have for the true music lovers
Date published: 2018-10-19
Rated 5 out of 5 by from Best in it’s class, with Superior Sound! I bought my Onyx 4 a couple months ago along when I got my iPhone X, work, home, heck I even put it in my backpack when I go out jogging or taking my Rottweiler on her walk! This speaker sounds awesome in any environment! I couldn’t be any happier with a portable blue tooth speaker! Thank you HK for making such an awesome product!
Date published: 2018-10-15
Rated 5 out of 5 by from Quailty assured the best Bluetooth speaker i have ever come across..the Quailty is the best in the market. put it to the test..
Date published: 2018-09-25
Rated 5 out of 5 by from Best bluetooth speaker in its class This speaker had destroyed all other speaker in its price range at 445 dollars. It even beats some of the speakers that are more expensive. The OS 4 sometimes even go as cheap as 150 dollars. If sound quality is on the top of your list and portability and extra features aren't so important to you, this is the speaker you want to get.
Date published: 2018-09-11
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
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can the studio 4 connect to an iphone? i cant see it on my phone

Asked by: nance3027
It should work with both Iphone and Android phones. Please try to press and hold the bluetooth icon on the Onyx studio 4 until it flashes and check your phone again, If that doesn't work. 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: 2018-10-19

Hi, I would like to connect an onyx studio 3 to a onyx studio 4 and still can not do it. Could you guide me on how to do this?

Asked by: AmirB
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 OnyxStudio 3 only gives you the capability to connect to a second Onyx Studio 3. 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: 2018-10-16

I have bought an onyx studio 4, and its sound is great. noted the speaker has AC mode, can i keep it on my desk and remain it plugged in as i dont plan to move it around my home? will this affect the battery inside? thanks! best regards, Philip

Asked by: Philip Leung
There is no harm in leaving your Harman portable product connected to electricity at all times. You can simply pick it up, unplug it from the charger and be on your way, knowing that you have a full charge.  However, if you’d like to conserve electrical energy, disconnect from charging. It will not overcharge.
Answered by: Paul C
Date published: 2018-10-13

Does it has Wi-Fi? Or I can connect only with Bluetooth?

Asked by: DiegoRG98
Hi! The Onyx Studio 4 can only be connected via Bluetooth.
Answered by: Nick F
Date published: 2018-10-10

Why my hk onyx 4 not make any sound when i connect it to my laptop unless I connect it too with the cellphone? But, when i just play music from my cellphone that speaker works well. is it problem with my laptop driver or my speaker?

Asked by: jisoo
Hello! The Onyx Studio 4 utilizes the standard Bluetooth Stereo Audio drivers available in most laptops. There are two different Bluetooth protocols, one for Headset Audio used for talking on the telephone, and the other for high quality stereo audio listening. Being that the Onyx Studio 4 is a speaker; your computer must connect to the speaker using the Stereo Audio protocol. Your best bet is to go into your control panel and find the Bluetooth setup. This setup usually provides a setup wizard and will take you through the steps to install the drivers needed for Stereo Audio.
Answered by: Nick F
Date published: 2018-10-09

While charging speaker will not pair, dies when unplugged. Power button is just flashing.

Asked by: julius
We would like to work with you directly to help you with your issue. Please submit a case request at https://www.harmanaudio.com/support-contact.html and the Customer Service Team will be more than happy to assist you.
Answered by: Nick F
Date published: 2018-10-09

Can I remotely turn the Onyx 4 on and off? Possibly using HK or similar iOS app, or a smart plug, smart switch, Amazon Dot Echo, etc?

Asked by: Sahil G
Unfortunately the Onyx Studio 4 can only be turned on/off using the power button on the unit itself.
Answered by: Mario at Customer Service
Date published: 2018-10-14

Whats the difference between Onyx 4 and Onyx 5 other than portability? Is the sound different? Louder? Richer? 

Asked by: Frostbyte
The Harman Kardon Onyx Studio 5 and Onyx Studio 4 has the same frequency response of 50Hz-20kHz (-6dB). However, the Onyx Studio 4 would be able to play more and clearer being that it has 2 woofers and 2 tweeters rated at 15W each, while the Onyx Studio 5 only has 1 woofer rated at 50W and 1 tweeter.
Answered by: Rhae C
Date published: 2018-10-15
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