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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13
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Description
Harman Kardon Onyx Studio 9 Portable stereo Bluetooth home speakerSuperior sound performance with a wider soundstage Get lost in your music with our new Constant Sound Field technology. The three channel system, featuring a dedicated center channel for crystal clear vocals surrounded by two specially designed tweeters, delivers a wider soundstage. This immersive experience brings your favorite songs to life all around you. Iconic design The Harman Kardon Onyx Studio 9 has a clean, circular design that looks great
Superior sound performance with a wider soundstage
Get lost in your music with our new Constant Sound Field technology. The three-channel system, featuring a dedicated center channel for crystal-clear vocals surrounded by two specially designed tweeters, delivers a wider soundstage. This immersive experience brings your favorite songs to life all around you.
Iconic design
The Harman Kardon Onyx Studio 9 has a clean, circular design that looks great everywhere. The integrated aluminum frame doubles as a sturdy handle and stand, the soft but durable fabric looks sharp and feels nice, while the easy-to-use silicon buttons on top give you quick control.
Bluetooth music streaming
The Harman Kardon Onyx Studio 9 pairs seamlessly with up to two mobile devices simultaneously. Take turns sharing playlists and music, all in enhanced, dynamic sound.
General Specifications
Rated Output power - 50W RMS
Power supply - 100-240Vac, 50Hz/60Hz
Audio Specifications
Transducers - Woofer 1 x 120mm, Tweeter 3 x 20mm
Frequency response - 50Hz - 20kHz (-6dB)
Signal-to-noise ratio> 80dB
Dimensions
Product dimensions (W x H x D) - 289.2 x287.5 x 130 mm / 11.39" x 11.32" x 5.12"
Packaging dimensions (W x H x D) - 312 x 322 x 172 mm / 12.28" x 12.67" x 6.77"
Net weight - 4.2kg / 9.25 lbs
Gross weight - 3.33kg / 7.34lbs
Control and Connection Specifications
Bluetooth version - 5.3
Bluetooth profile - A2DP 1.4, AVRCP 1.6
Bluetooth transmitter frequency range - 2400MHz - 2483.5MHz
Bluetooth transmitter power - ≤ 12 dBm (EIRP)
Bluetooth transmitter modulation - GFSK, π/4 DQPSK, 8DPSK
USB port - Type C
USB rating - 5V / 2.1A (Max)
Supporting file format - mp3
Battery
Battery type - Li-ion 17.14 Wh (equivalent to 3.63 V/ 4722 mAh)
Battery charge time - 4 hours
Music play time - up to 8 hours (dependent on volume level and audio content)
Cable type - AC power cable (type varies by regions)
Cable length - 2.0 m / 6.6 ft
USB charge out - 5V / 2.1A (Max)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
K270 keyboard info that might help you
Color: Black, Size: 1 Pack, Style: Keyboard
This review is a bit long, but has info that might help you. I posted it twice, once for the K270 keyboard and once for the M510 mouse. I have owned a K270 keyboard and M185 compact mouse for years. I bought them as the keyboard/mouse combo that Logitech sells. I have been happy with them. They are still working, but I decided that I would like to have a full size mouse. I settled on the M510 for the new mouse. The M510 mouse works with the unifying receiver. I did a fair amount of research before buying. I thought I could use the original K270 keyboard with the new mouse. I found that the older M185 mouse is not unifying. I thought that was odd because when you look at the seperate K270 Keyboard, it says that it is a unifying keyboard. Why would the combo set have a unifying keyboard but a non-unifying mouse? From what I have read online, when you buy the K270/M185 combo, it is NOT a unifying set. If you buy the K270 keyboard seperately, it IS a unifying keyboard. Since I wanted to get the M510 mouse, I had to buy a new seperate K270 keyboard since the one in the combo set is not unifying. I found this out ahead of time, so it was not an issue. I actually bought 2 each of the K270 & M510, for each of our 2 computers. Did not have any trouble getting them up and running. As a side benefit, the keyboard and mouse each come with a unifying receiver so I have a couple of spare receivers now. Registering them was an adventure. There are two methods to register, a serial number search or entering the info manually. The serial number search did not find any of them, so I did it manually. I did the keyboards first. After you enter the info for the unit you are registering, the registration software asks for the serial number. When you give it the serial number, I does a serial number search and verifies that the serial number matches that unit. This serial number search acutally worked (sort of). It found one of the keyboards correctly, but kept changing the other to a K295 instead of a K270. More on that in a bit. Next I registered the mice. When I got to the point where you select the correct model, the M510 was not in the list. I tried a few different things and finally found a trick that worked. When it asked for the model, I used M525 instead of M510. At the next step where it did the serial number search, it found the serial number was associated with the M510 and corrected the model entry from M525 to M510. Success with the mice. Back to the keyboard. I could not figure out a way around the registration error, so I contacted Logitech support and got a reply back from a support rep named Sharan. After a couple of email exchanges, Sharan was able to get the other keyboard registered correctly - Thank you again for your help, Sharan. I had noticed when I first started all of this that each unit has two serial numbers, one on the box and one on the unit. The two serial numbers did not match. Sharan told me that the number on the box is strictly for inventory use and the number on the unit is the one to use when registering. Anyway, both sets are now working and correctly registered. Happy with the purchase.
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Reviewed in the United States on January 30, 2024
★★★★★ 5
Easy and Works Great
Color: Black, Size: 1 Pack, Style: Combo
This is perfect, works great, and so easy to connect. Just plug in USB and it's ready.
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Reviewed in the United States on May 3, 2026
★★★★★ 5
Lovely
Color: Rose, Size: 1 Pack, Style: Combo
Love the clacking sound, it’s satisfying, the keys aren’t sticky, it’s a nice shade of pink, comfortable to use. Keys pop off easy enough for easy cleaning and are super stable when popped back on. The mouse is great two, it’s a two-in-one set up with the USB plug in so it controls both which is nice.
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Reviewed in the United States on May 27, 2026
★★★★★ 4
An extra separate dongle for the keyboard and mouse would make this perfect.
Color: Off White, Size: 1 Pack, Style: Combo
I picked up the Logitech MK270 Wireless Keyboard and Mouse Combo on a recommendation from our IT guy, and overall it’s been a solid buy for the price.
The keyboard is the highlight. I’ve been using it for a couple of weeks now and it’s been great. It’s quiet, responsive, and just works every time without any issues. Setup was simple and I haven’t had a single connectivity problem. I do wish the rear feet lifted it a bit higher. Even fully extended, it sits more flat than what I was used to. That said, I’m adjusting to it and it hasn’t been a dealbreaker.
The mouse is where it falls short. It gets the job done, but it definitely feels a bit cheap compared to the keyboard. Lightweight in a way that doesn’t feel premium, and just not the same level of quality overall.
One thing I really wish they included is a second dongle. I’d love to keep the keyboard connected to my main PC and use the mouse with my laptop, but with only one receiver that’s not an option out of the box.
All in, this is a reliable combo from Logitech. The keyboard alone makes it worth it, especially at this price point. Just go in knowing the mouse is pretty basic and you’re limited to a single receiver setup.
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Reviewed in the United States on April 22, 2026
★★★★★ 5
Perfect solution to a common problem
Size: 6-Foot Cable, Style: Rotating Plug - Single Pack
Power strips that have low profile plugs are fairly easy to find these days, but it's a lot more difficult to find one where the cord leaves the plug in the direction you need it to. This solves that problem. you can turn the prongs on the plug and any direction you need them to go. And it doesn't hurt that the design is attractive and appears to be fairly sturdy. I've been using mine for over a month at this point and I'm very happy with it.
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Reviewed in the United States on September 9, 2025
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