Wireless HD Audio Adaptor

$129.95129.95 each

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Wireless room-filling stereo sound at the touch of a button

The Harman Kardon Adapt is a wireless, truly HD audio stereo adaptor. It updates your existing Hi-Fi gear with pure, crisp sound thanks to Harman’s expertise in audio technology. Now the music doesn’t stop no matter where you are in your home. Simply set up multiple speakers or adaptors and enjoy wireless room filling sound at the touch of a button. Play different music in different rooms or stream the same song throughout your house with party mode. Our app and Bluetooth capability let you access any music from your phone or your favorite apps seamlessly.


Device Compatibility

Bluetooth Yes

General Specifications

Output Voltage >1Vrms
Bluetooth Transmitter Frequency Range 2402 – 2480MHz
Bluetooth Transmitter Power <4dBm
Bluetooth Transmitter Modulation GFSK, 3.14/4 DQPSK, 8DPSK
2.4G Wi-Fi Transmitter Frequency Range 2412 – 2472MHz
2.4G Wi-Fi Transmitter Power <20dBm (EIRP)
2.4G Wi-Fi Modulation OFDM, DSSS, DBPSK, DQPSK, CCK,
2.4G Wi-Fi Network Compatibility IEEE 802.11b/g/n
Weight (g) 121
Power consumption in sleep mode <3 Watts/Hour
Note - The HK Omni Adapt is intended to be used for streaming music via Bluetooth and Wi-Fi technology. This product is designed to be instantly on and ready to play music at a moment's notice. The HK Omni Adapt is in compliance with the European Union energy legislation. It will enter into sleep mode (networked standby) after 10 minutes without operation, after which it can be re-activated via Bluetooth or Wi-Fi. Yes


Width (mm) 118
Width (in) 4-5/8
Depth (mm) 86
Depth (in) 3-3/8
Height (mm) 30
Height (in) 1-3/16
Click here for a complete list of all specs for this product

Spec Sheet (EN)

English 577 KB
  • Safety & Warranty Sheet
  • Adapt Wireless HD Stereo Adaptor
  • Quick-start guide
  • USB power supply
  • Regional power pin(s)
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How come?","Answer__c":"To set up the Harman Kardon Adapt in the HK Controller app, you have to select \"One speaker\", not the Adapt+ option. \r\nWhen selecting \"One speaker\", simply follow the on-screen instructions to install your Adapt on the Wi-Fi network.\r\nNote that the instructions for Adapt devices will appear on your screen after 30-45 seconds (Only Apple devices)."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka01Y00000041wWQAQ"},"Title":"How to reset the ADAPT+","Id":"ka01Y00000041wWQAQ","ArticleNumber":"000007369","ArticleType":"FAQ__kav","Question__c":"How can I reset my ADAPT+?","Answer__c":"On the bottom of your ADAPT+ there is a reset button. \r\nHold it down for 5 seconds, until the round button LED lights up in white. The product is now reset and ready to be set up again."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka01Y00000041x5QAA"},"Title":"Selecting the right source setup for OMNI BAR+ and ADAPT+","Id":"ka01Y00000041x5QAA","ArticleNumber":"000007375","ArticleType":"FAQ__kav","Question__c":"What is the right source setup for my OMNI BAR+ or ADAPT+?","Answer__c":"For OMNI BAR+, three sources are available: HDMI (not applicable for ADAPT+), Optical or AUX input.\r\nIf you select \"Watching movies and TV shows\" in the control app for either one of them, you will have a very little delay and good lip sync with the TV for video applications. However, you will not be able to rebroadcast the source to other OMNI+ speakers when selecting this mode.\r\nIf you select \"Listening to music\", you will be able to rebroadcast to other OMNI+ speakers in your house, however, you will have lip sync delay with video material. Select that specific mode if you use HDMI (not applicable for ADAPT+), Optical or AUX for music only.\r\n\r\nUsing Chromecast, Spotify Connect or Bluetooth is not part of these modes. When using one of these streaming methods, you are able to rebroadcast any music source."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka01Y00000041wMQAQ"},"Title":"Re-broadcasting TV or Movie signals from the OMNI BAR+ and ADAPT+","Id":"ka01Y00000041wMQAQ","ArticleNumber":"000007367","ArticleType":"FAQ__kav","Question__c":"Can I re-broadcast any TV or Movie audio signal from my OMNI BAR+ or ADAPT+?","Answer__c":"No, that is not possible. However, you can create a 5.1 wireless surround system to extend your TV or movie sound.\r\nAll you need is two additional OMNI+ speakers, such as 2 x OMNI 10+, OMNI 20+ or OMNI 50+."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka01Y00000041w7QAA"},"Title":"Will I experience delay when watching movies with my OMNI BAR+ 5.1 or ADAPT+ Wireless system?","Id":"ka01Y00000041w7QAA","ArticleNumber":"000007364","ArticleType":"FAQ__kav","Question__c":"Will I experience delay when watching movies with my OMNI BAR+ 5.1 or ADAPT+ Wireless system?","Answer__c":"If you have selected the correct mode in the HK Control app when setting up your system, you will have very little delay.\r\nYou can always change the settings later, of course.\r\nSome TV sets permit adjustment of lip sync, in case you wish to optimize your system."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka01Y00000041wHQAQ"},"Title":"Can I connect any subwoofer to the ADAPT+ sub-out port?","Id":"ka01Y00000041wHQAQ","ArticleNumber":"000007366","ArticleType":"FAQ__kav","Question__c":"Can I connect any subwoofer to the ADAPT+ sub-out port?","Answer__c":"Yes, that is exactly what the ADAPT+ is made for. The subwoofer needs to be active, of course, which means that it must have its own, built-in amplifier."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka0i0000000YXqLAAW"},"Title":"Is an analog aux signal fed to the jack input available on the analog jack output:Adapt","Id":"ka0i0000000YXqLAAW","ArticleNumber":"000005458","ArticleType":"FAQ__kav","Question__c":"Is an analog aux signal fed to the jack input available on the analog jack output?","Answer__c":"Yes, but only with power on the Adapt.\r\nWhen it senses a signal on the analog aux input, the input ring will light up green automatically, and the signal will become available from the line output, for transmission with cable to e.g. an amplifier.\r\nIt is important to note that there will be a slight delay in the signal that comes out of the line output jack, even if it does not involve any wireless functions."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka01Y00000040t2QAA"},"Title":"Can I reset my Omni 10+, Omni 20+ and Omni 50+, and how?","Id":"ka01Y00000040t2QAA","ArticleNumber":"000004839","ArticleType":"FAQ__kav","Question__c":"Can I reset my Omni 10+, Omni 20+ and Omni 50+, and how?","Answer__c":"There is a reset button on the bottom of the Omni 10+ and Omni 20+ device. Press and hold this button for 5 seconds to perform a factory reset of your product. All product settings, Wi-Fi, and Bluetooth connections will be erased. To reset the OMNI 50+ speaker, please do the following: First, press & hold ‘Source’, ‘Vol+’, ‘Vol-‘ buttons at the same time. The Omni 50+ will switched off, indicating that the product was successful reset. Secondly, press ‘power' button to turn on power for the Omni 50+ speaker. Now you can easily set up the product again for your home Wi-Fi network."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka01Y00000040wzQAA"},"Title":"Can I use my OMNI+ speaker without the HK Controller App?","Id":"ka01Y00000040wzQAA","ArticleNumber":"000004420","ArticleType":"FAQ__kav","Question__c":"Can I use my OMNI+ speaker without the HK Controller App?","Answer__c":"Streaming via Bluetooth or direct aux in connection are supported without the HK Controller app. For OMNI+ speakers that you already have placed in a room, they are capable of using either Spotify Connect or Chromecast built-in without the need of using the HK Controller app. Use only the HK Controller app for setting up the speakers for OMNI+."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka01Y000000wlE7QAI"},"Title":"I can not play music to my Omni speakers using a Huawei phone with HK Controller app","Id":"ka01Y000000wlE7QAI","ArticleNumber":"000007046","ArticleType":"FAQ__kav","Question__c":"I can not play music to my Omni speakers using a Huawei phone with HK Controller app. Is there any way to fix this?","Answer__c":"Unfortunately, some Huawei phones are not able to stream music from the HK Controller app to 1st generation Omni speakers. However, the new Omni 10+, 20+, and 50+ have fixed this issue, and you will be able to stream music to them using your Huawei phone."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka01Y000000wkwrQAA"},"Title":"Will I be able to use Spotify with my existing Omni speakers?","Id":"ka01Y000000wkwrQAA","ArticleNumber":"000007015","ArticleType":"FAQ__kav","Question__c":"Will I be able to use Spotify with my existing Omni speakers. if I buy an Omni+ speaker?","Answer__c":"Yes, all Omni+ speakers have Spotify Connect built-in. To use Spotify Connect on an Omni+ speaker with an existing Omni, simple start a song in Spotify and then restream to all other rooms in your house.\r\nYou can only restream up to two 1st Generation Omni speakers."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka0i0000000kC7pAAE"},"Title":"How does it work?","Id":"ka0i0000000kC7pAAE","ArticleNumber":"000004421","ArticleType":"FAQ__kav","Question__c":"How does it work?","Answer__c":"Each speaker, adaptor and phone/tablet connects to your home Wi-Fi network, just like any other Wi-Fi produce you own. You can then stream any music from your phone/tablet to any Omni speaker or Adapt over your home network"},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka0i0000000kC4vAAE"},"Title":"Will OMNI work with my existing equipment?","Id":"ka0i0000000kC4vAAE","ArticleNumber":"000004395","ArticleType":"FAQ__kav","Question__c":"Will OMNI work with my existing equipment?","Answer__c":"Yes. Just connect an Adapt to your existing Hi-Fi equipment or active speaker via the 3.5mm line out port to transform any speaker into a wireless speaker in the Harman Kardon Wireless HD Audio System"},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka01Y00000040egQAA"},"Title":"What router should i get, to have the best performance for my OMNI system?","Id":"ka01Y00000040egQAA","ArticleNumber":"000006318","ArticleType":"FAQ__kav","Question__c":"What router should i get, to have the best performance for my OMNI system?","Answer__c":"To have the best possible performance for OMNI system on 2.4 GHz Wi-Fi network, we advise to have a router with at least 450 Mbps Wi-Fi speed.\r\nIf your router is below 450 Mbps, then you might experience dropout while streaming and/or not capable of having many speakers in your system.\r\nPlease also be sure that your home Wi-Fi router has Multicast enabled, since our OMNI system requires this to work.\r\n\r\nMost routers that support a speed of 450 Mbps are also 5 GHz network enabled, which will make your router ready for the new OMNI+ series, that support 5 GHz Wi-Fi band."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka0i0000000YZw9AAG"},"Title":"SONOS now has Apple Music integration in their app. Is Harman Kardon planning to add this service too?","Id":"ka0i0000000YZw9AAG","ArticleNumber":"000005884","ArticleType":"FAQ__kav","Question__c":"SONOS now has Apple Music integration in their app. Is Harman Kardon planning to add this service too?","Answer__c":"Apple Music, like any music service, can already be used with the Omni system via Bluetooth re-streaming. First connect to any Omni speaker via Bluetooth and then re-stream to the other Omni speakers in your house with the Link button, or by grouping different rooms in the Controller app. We are looking into the possibility of adding direct support for Apple Music, so check back for updates."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka01Y00000040gXQAQ"},"Title":"I'm having trouble with setting up a Wi-Fi extender network with my Omni 10+, Omni 20+ or Omni 50+","Id":"ka01Y00000040gXQAQ","ArticleNumber":"000005886","ArticleType":"FAQ__kav","Question__c":"I'm having trouble with setting up a Wi-Fi extender network with my Omni 10+, Omni 20+ or Omni 50+","Answer__c":"Make sure you disable AP/Client isolation on your Access Point / Extender and that Multicast forwarding is not disabled between the W-Fi networks. However, we cannot guarantee than streaming will work flawless as Extender networks are tricky and can cause many issues. Always use a 5GHz Wi-Fi network extender for best results."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka0i0000000YZw4AAG"},"Title":"I’m subscribed to Apple Music, and I used to pay for tracks via iTunes. How can I tell the difference between my iTunes tracks and Apple music tracks?","Id":"ka0i0000000YZw4AAG","ArticleNumber":"000005883","ArticleType":"FAQ__kav","Question__c":"I’m subscribed to Apple Music, and I used to pay for tracks via iTunes. How can I tell the difference between my iTunes tracks and Apple music tracks?","Answer__c":"Tracks purchased on iTunes within the last several years are DRM-free and playable on the Harman Kardon Controller app. Tracks made available offline from Apple Music are not playable in the Harman Kardon Controller app, and must be streamed via Bluetooth. We are looking into the possibility of adding direct support for Apple Music, so check back for updates."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka0i0000000kC68AAE"},"Title":"Can OMNI stream FM radio or TV audio from one OMNI to another OMNI?","Id":"ka0i0000000kC68AAE","ArticleNumber":"000004415","ArticleType":"FAQ__kav","Question__c":"Can OMNI stream FM radio or TV audio from one OMNI to another OMNI?","Answer__c":"This is not supported at this time, but the upcoming Omni+ speakers will support Google Chromecast built-in, which has support for many Internet radio services such as TuneIn Radio."},{"attributes":{"type":"FAQ__kav","url":"/services/data/v38.0/sobjects/FAQ__kav/ka0i0000000YZwEAAW"},"Title":"Will tracks made available offline from Apple Music be playable on the Omni system?","Id":"ka0i0000000YZwEAAW","ArticleNumber":"000005885","ArticleType":"FAQ__kav","Question__c":"Will tracks made available offline from Apple Music be playable on the Omni system?","Answer__c":"Yes, through Bluetooth restreaming. Tracks made available offline in Apple Music are DRM protected and are not playable in the Harman Kardon Controller app. To play these tracks, or any other Apple Music tracks, first connect to any Omni speaker via Bluetooth and then restream to the other Omni speakers in your house with the Link button, or by grouping different rooms in the Controller app. We are looking into the possibility of adding direct support for Apple Music, so check back for updates."}],"maxQuestionsPerPage":null,"maxPages":null}

1 Year Electronics

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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Adapt is rated 2.3 out of 5 by 16.
Rated 5 out of 5 by from Easy to setup, works well! My old-school NAD and Jura setup is now belting out sounds streamed from my iPhone. Great sound, very pleased. I was nervous after some reviews of hard to setup, I simply installed the app, plugged it into the aux on the amp and power, hit the button, and it worked.
Date published: 2017-06-04
Rated 4 out of 5 by from Really Bad instructions The instructions that come with the device are truly awful. I only got it working by looking at video's on Utube. Now working its fine.
Date published: 2017-03-08
Rated 4 out of 5 by from Not perfect but not as bad as some say My setup: Yamaha receiver, Omni 20 and Adapt. This is an early review having only received the Omni products today. I am giving it four stars because I could not do 3.5 and felt the other criticism a bit harsh and wanted to balance things a little. Also, the Omni20 does sound really good - way better than most other Bluetooth speakers by far. For me, a three star product needs to meet certain criteria: advertised functionality works, is reasonably intuitive to use and I can understand the philosophy behind the design approach. The Omni and Controller app meet all these criteria to various degrees and in addition has some other compelling good points. When I bought this setup, I was looking for three things: 1) Cheaper than Sonos 2) Be able to stream music from CD player out to all other Omni products 3) Be able to link one Omni product to iPad Bluetooth and then have it restreamed everywhere. I have successfully tested all three of these and given the complexity involved with doing this I am actually quite pleased. The Party Mode and Link is really cool. I love the volume controller that lets you tweak the volumes in various rooms on a single dashboard. Let me give the bad points now: -The controller app needs better instructions on usability. Any idea what the home icon does? I have no clue and can't find it documented anywhere. I am partially blind in one eye so maybe it's fine print? :) -Searching for music on your system. I have been struggling with this all night. Some songs play and others come up with a useless message saying they can not be played. -The app needs a simple mute button which can be found quickly. Some final thoughts I have are, I suggest having some patience with the app when it searches for products and is doing the background setup. HK appears to be on the right track here. Hopefully newer versions of the app will be easier to use. I am hoping to come back in a few weeks and give an even more favorable follow up review. I want this system to work. Sonos, while a good product, is ridiculously overpriced in my opinion.
Date published: 2015-11-12
Rated 3 out of 5 by from Limited solution to stream existing equipment Adapt is an inexpensive solution to add your existing stereo to streaming. Fits the bill for me to stream radio to my Omni speakers. Need to turn volume up very high when streaming to your stereo through Adapt. Hope HK upgrades this component to compete with Sonos Connect.
Date published: 2016-01-31
Rated 3 out of 5 by from It takes some fiddling I have been using Airplay for some years now and I wanted to update the system to something that would allow me to stream to multiple speakers from my mobile. I bought 3 adapt and an Omni 20, it's been almost a month and I'm still trying to figure out the sytem, I set it up and worked fine , then it started to cut off (that has been the standard) I decided to reset the whole thing last weekend and it has been working fine since. It is a shame the app is not useful since it doesn't support Pandora , Spotify or even Itunes Match or Radio and the featured radio stations I find them substandard. Something you need to keep in mind, anytime you reset your router or the system, the volume of the adapt goes all the way up so you can burn the speakers connected to it, it does not happen with the Omni 20.
Date published: 2015-01-09
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Can the ADAPT be used with a non-HK speaker, I.E.- any aux input for any receiver or radio? Thanks.

Asked by: khubbard2002
Yes, you can. The Adapt can be used with a non-HK speaker so you can use it via bluetooth or group it together with the HK Omni speakers.
Answered by: Mario at Customer Service
Date published: 2018-02-10

Is the App available on Laptop. I was recommending Adapt to someone, and they want to play the music on their laptop through WiFi

Asked by: Shair Khan
Hi, The HK Controller app is only available through Android and iOS phone and are not available in Laptop.
Answered by: Mario at Customer Service
Date published: 2018-01-20

I have the adapt connected via bluetooth to an Echo Dot and via audio out to speakers. All works well except when the I tell Alexa to stop the music, the adapt generates a lot of continuous background noise until another bluetooth signal comes in. Ideas?

Asked by: DannyS
The background noise is very likely a signal being sent from the Echo Dot. A good way for you to find out is to connect another Bluetooth device to the ADAPT, and then try stopping the audio. If the ADAPT generates background noise, the problem is in the ADAPT. But if it is clean and the noise only happens when you stop the Echo Dot, this will confirm that it is the Dot sending the noisy signal. If you have concluded that the Adapt is indeed the one causing the noise, 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: Steve S
Date published: 2018-01-15

Does the V4.1.0 HK Controller iOS app support ADAPT (not the ADAPT+)? I have ADAPT and it cannot be detected by the app anymore.

Asked by: AdaptCH
There should be no problem with the Adapt with the V4.1.0 HK Controller app. I noticed you are in Greece. If you are having problems with the Adapt, please contact the store where you purchased it and they will be able to help, or at least guide you to the people that can help.
Answered by: Mario at Customer Service
Date published: 2018-01-01

I already have a Onyx 3, can I conect it to wifi with an HK Adapter, so can I create a Wireless HD Audio System?

Asked by: Santiago
Hi Thank you for your question Yes you can connect an HK Adapt to the AUX input port of the Onyx Studio 3 and play it.
Answered by: Mogens
Date published: 2017-12-12

Will Adapt work with Chromecast (audio)? I plan to plug my sound system in the ''audio in'' of the Adapt and listen through Chromecast on my speakers.

Asked by: Agrion
Unfortunately, the Adapt does not have built-in Chromecast capability.
Answered by: Steve S
Date published: 2017-12-04

Can i connect the hk adapt to samsung speakers? or this hk adapt is exclusive for hk only?

Asked by: maxi29
The HK adapt is only used for HK products Mainly the Omni series.
Answered by: Mario at Customer Service
Date published: 2018-01-08

Can the ADAPT transfer audio directly from the aux-in to the aux-out? My amplifier has only a single input, so I also like to use the Adapt also as a hub.

Asked by: erikjan85
Yes it can, the Harman/Kardon ADAPT can be used as to get aux inputs and output it through the Aux as well.
Answered by: Mario at Customer Service
Date published: 2017-11-02
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