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  • AKG K840KL On-Ear Wireless Headphone - Black
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AKG K840KL On-Ear Wireless Headphone - Black

by AKG
26 customer reviews

Available from these sellers.
Standard Packaging
  • Kleer wireless technology
  • Extended battery life (up to 2 weeks)
  • iPhone compatible
1 new from $249.00 1 used from $199.95 1 refurbished from $230.00

Technical Details

Product Packaging: Standard Packaging
  • Noise-cancelling-feature
  • Wireless-feature

Product Description

Product Packaging:Standard Packaging

Harman AKG K840KL High-performance Kleer wireless on-ear mini headphones


Product Details

Product Packaging: Standard Packaging
  • Product Dimensions: 7.1 x 4.5 x 9.8 inches ; 2.5 pounds
  • Shipping Weight: 2.6 pounds
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B004KS7XCG
  • Item model number: K840KL
  • Batteries 1 Nonstandard Battery batteries required. (included)
  • Average Customer Review: 4.1 out of 5 stars  See all reviews (26 customer reviews)
  • Amazon Best Sellers Rank:
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: March 28, 2011

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

8 of 8 people found the following review helpful By Capkirk50 on February 1, 2012
Package Type: Standard Packaging Verified Purchase
Great headset. Versatile, in that it is also portable. Use in your home stereo or on the go with mobile phone, i-pod, etc. Transmitter plugs into unit you will be listening to, then flip switch on trans. and headset. Range depends, but usually between 30 and 60 feet. Comfortable on-ear phones will not cause ears to sweat. Well made. No noise is a major plus. Pricey, but worth it.
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27 of 34 people found the following review helpful By kapy on November 20, 2011
Package Type: Standard Packaging
I am writing this review simply to compare Bose QC 15 and AKG K840. I have had a bose QC 15 for about one year and I handled the headphones like a baby. Very very careful with it, gentle, always stored properly. Minimal usage (6 hours weekly). And then the most unexpected thing happened. Mr fragile Bose broke. It simply broke on the plastic body. The electronics are fine but the swivel head broke and then I noticed small cracks all over the plastic body. Really that what I get for 300 dollars. Ohhhh!!!!! I am so mad. I looked up online and realized that I am not alone. This is the most common problem with the QCs. So I swore that I will never ever buy QC again and will preach about the ultra cheap build of the product. Then I decided to buy AKG for various reasons. Great product. Wireless connectivity is superb. Minimal hiss in idle mode. Once you start the movie or the music, you really cant notice the hiss. So far they feel solid. Comfortable on the ears. Everything is great, the sound quality is great but then I compared them to the QC sound and that is where QC wins. Specifically, Bose has more depth/Bass to it, while the K840 has a comparatively flat sound. Now that is highly subjective. I personally like slightly high bass (hence I prefer the QCs) but not everyone does. Besides this little difference, the sound quality of K840 is simply great. All frequencies are clear and crisp. I would buy them again if they last me longer than the QCs did. Never a Bose QC again.
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15 of 19 people found the following review helpful By Tom on August 2, 2011
Package Type: Standard Packaging
Love the sound of the headphones.Very clean the bass is not over driven but deep and tight enough for Bach or Emerson ,Lake & Palmer. The high crystal Clear not hissy and more volume then you can use. The phones are comfortable they sit on your ear not covering it I can wear them for hours. Ear bud headphones hurt my ears after a short time. AKG give you slew of accessories from the transmitter as small as a Bic lighter, cables for charging and listening three power adapters for any country and two black rubber band not listed in the manual. I found out they are to attach the transmitter to your iPod and they work with the touch screen.
Like I said in the title portable too most wireless headphones have large transmitters that need to be plug into power the transmitter for the AKGs is small and rechargeable like the headphones both charge fast and last a long time I had mine for three weeks now and only have recharged them once after the first time.

AKG....All Kinds of Great sound
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4 of 4 people found the following review helpful By Bernmitanyo_316 on January 6, 2012
Package Type: Standard Packaging Verified Purchase
I have apprehensions about buying wireless headphones especially bluetooth sets, but this product definitely rocks! Tried it with my laptop and ipod and it sounds great but not without its limitations....I tried it out in a little bit cold and windy conditions and the signals break off...so using it outdoors or during physical activities is on a case by case I guess.....battery life is ok, it will last three days with about 8-10 hour usage but will last a week or so if you use it only 2-3 hrs at a time..use it indoors or during travels its definitely great....thumbs up for this one!
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4 of 4 people found the following review helpful By J. Manack on January 20, 2013
Package Type: Standard Packaging
I bought these for my husband when he works out at the gym. The only issue we found was in the wireless doggle if hanging on the side then the found would break up for about 1/4 of second ever few minutes. But if the doggle was supported, then the sound quality was perfect.
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6 of 7 people found the following review helpful By Mr. Liang Xiong on December 2, 2011
Package Type: Standard Packaging Verified Purchase
Thanks to the Kleer wireless technology, it delivers wide-range, uncompressed stereo sound;
It's lightweight, portable, convenient to carry outside without any annoying lines.
GREAT! Better than Sennheiser RS 180 which you can only use at home. I don't have RS 180, so forget about the sound quality.
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3 of 3 people found the following review helpful By Thomas E Shields on December 9, 2013
Package Type: Standard Packaging Verified Purchase
The headphones work great as promised. Comfortable, and easy to use. They last for days and days between charging. The maximum distance I can go from my source before it starts to break up the signal is about 30 feet, plenty for my TV. I would purchase them again in a heartbeat!
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5 of 6 people found the following review helpful By Linda Goodwin-Parkinson on September 22, 2012
Package Type: Standard Packaging Verified Purchase
If you are looking for great quality, wireless, on-ear headphones, consider these. I wanted wireless headphones for a couple of years and had considered several brands before getting these. They are lightweight and very comfortable. I received them for my birthday, immediately bought them for my husband and then a pair for another family member. The company, AKG, also carries a line endorsed by Quincy Jones.
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