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Audio-Technica ATH-CKM55BK 3.5mm Connector In-ear Headphone

  • 5Hz-24KHz
  • 3.5mm Connector
  • 1.97 ft. (0.6 m) Cord Length
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Audio-Technica ATH-CKM55BK 3.5mm Connector In-Ear Headphone

The Audio-Technica ATH-CKM55BK In-Ear Headphones feature a stabilizer design between the driver unit and the housing to minimize unnecessary vibration and reproduce superb sound quality. Comfortable, ideal-fit earpieces provide noise isolation and prevent sound leakage.


  • Newly developed 12.5mm drivers ensure high-quality sound
  • Built-in stabilizer reduces unwanted vibrations & delivers pure tones
  • Comfortable, ideal-fit earpieces provide noise isolation and prevent sound leakage
  • Gold-plated mini-plug for exceptional corrosion resistance, superb conductivity and low noise
  • Includes pouch, interchangeable ear tips (S/M/L), and 3.2’ extension cord


Type Dynamic
Driver Diameter 12.5mm
Frequency Response 5 - 24,000Hz
Maximum Input Power 200mW
Sensitivity 104dB/mW
Impedance 16 Ohms
Weight 0.22oz (6.5g)
Cable 2 Feet (0.6m), Y-type
Connector 1/8" (3.5mm) Mini-stereo, gold-plated
Accessories Included Pouch, 2-Foot (0.6m) Extension Cord, Ear Tips (S/M/L)

Learn more about the Audio-Technica ATH-CKM55BK

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the Audio-Technica ATH-CKM55BK

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  • ryan s.
  • 3/17/2015 12:58:23 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggs:)

Pros: Good comfort, different earbuds depending on what preference you like.

Cons: Initial earbuds were not very comfortable had to swap.

Did you find this review helpful? Yes No

  • Mark G.
  • 8/29/2014 12:34:14 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggs

Pros: Was a little apprehensive about all the highly positive reviews. But these earbuds sound just great. I use them at my desk in a cube farm with constant low-level background people noise and these buds block enough of that. I futzed with the EQ on my iPod Nano and found "Small Speakers" sounds most natural for the music I listen to, mostly rock and alternative. I don't use them while exercising so can't comment on that.

Cons: Another review mentioned cord noise when moving around and I can confirm there is a bit of that. Not an issue for how/where I'm using them.

Other Thoughts: Relieved that spending that amount of $ for earbuds worked out great.

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  • Jose G.
  • 7/16/2014 3:56:41 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGood Goo

Pros: At first I wasn't that impressed with the sound, especially after reading so many great reviews. Then i decided to try on my old $20 headphones, and bam! there was an immediate difference. The old head phones sounded dull and blah in comparison.
However, I still was not satisfied as I read others describing it as wearing larger earmuff headphones. I decided to change the ear piece to the largest size, and wham! there was another jump in sound.
I then compared them to my larger Audio Technica headphones, and even though they weren't as grand in sound, the difference was acceptable, especially given the price difference of $150.

Cons: The larger ear-buds irritated my ears at first, but after the third day i got use to them.

Other Thoughts: I am glad I purchased these, it is too easy to forget how great songs can sound when you wear lesser quality headphones, and saves you from getting weird looks from using the arger studio ones.

1 out of 1 people found this review helpful. Did you? Yes No

  • VISA
  • 6/29/2014 4:02:46 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsIt's great.

Pros: Very nice bass
Sound is beautiful
I hear things better in BF4 then my friend does with Turtle Beaches.

Cons: After a while they become annoying in the ear. However are barely noticed when I do something

Other Thoughts: Comes with 2 more pairs of heads and has a cable that can be extended. Pretty cool.

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  • Michelle J.
  • 4/18/2014 12:42:11 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsOne-word review: Wow.

Pros: Amazing sound quality, easily beating out several pair of over-the-ear studio headphones in the same price range (Pioneer, Bose, Sennheiser). 'Clarion' is the word i would use to describe the highs. You can feel the rumble when they hit lows even on a cell phone, and they handle my home theater's bass control being maxed out better than my 2x 12in woofers do. overall, extremely impressed. A-T won themselves a lifetime customer on these.

Cons: the cord length is my only complaint. without the extension, it's just too short. with, it's just too long.

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  • Say G.
  • 1/24/2014 1:03:06 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggs

Pros: Fit snugly, no noticeable audio flaw.

Cons: No complaints.

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  • Anonymous
  • 6/25/2013 11:04:38 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsQuality Sound

Pros: The ATH-CKM55BK are very detailed sound that brings a very punctual bass sound without being muffled, siding a bit toward clarity. A punctual bass that doesn't muddy any of the mid or highs. I'd say the mids really stand out in front and the highs do not pierce. You get the punch without blurring all the other music even listening to very hard fast music.

Can recommend these to audiophile lovers.

Cons: Got it on sale and for the price I can't think of a CON.

Other Thoughts: The buds are bigger and give these a close to headphone sound without any need for amplification on my iPhone for them to fully be themselves.. It comes with a shorter wire with extension option. Different size buds for ears that will fit your ears like a glove. Even though they are heavier than the CX150's they do not fall out.

1 out of 1 people found this review helpful. Did you? Yes No

  • James L.
  • 4/18/2013 5:38:33 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsLove em

Pros: They sound very, very clear. I can pick out each instrument from the music individually.

I listened to a lot of my favorite songs and when listening to them through these ear buds, they sound entirely different. It's like they're not even the same songs. I hear sounds and details that I never heard before. This is especially true for my rock and heavy metal music, but even some of my hip hip and rap music have subtle details that never stood out to me until I heard them through these ear buds.

They fit very deep and secure in the ears due to the way they are designed. This makes the bass hit hard. Awesome.

In the past I've had to constantly adjust my ear buds because they kept slighting coming out which reduced the audio quality a little. These stay put once they're in.

Overall, the best ear buds I have ever owned. They outperform the Sennheiser OCX880 ear buds, which I also purchased from Newegg, and they're slightly cheaper.

Cons: They take a while to break in fully.

Other Thoughts: Fantastic audio, 10/10

3 out of 3 people found this review helpful. Did you? Yes No

  • Nathan D.
  • 4/12/2013 12:47:30 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsThe Best I have ever had

Pros: These have the BEST sound I have ever owned, i work nights so these are my most important tool. They adapt to any music i put to them, from 40's jazz to modern dub step, they took it all. the design of the buds allow you to really ram them in your ear and really let the bass out, it takes some hardcore force to rip these out of your ear. Yes i have heard others, and these will out perform any overhead head phone by a mile.

Cons: Their durability for $65 is poor, after daily use of 6 hours for 5 months, and constant warping around my music player, sitting in my cars cup holder and being used and abused, the left bud wiring shorted about a inch from the bud, it was one of those pesky shorts were you couldn't single out trough knotting or otherwise evasive action, so i tried to redo the wiring, i couldn't figure out the type of wire these use, so i just bought a second pair becasue of i only have till September before i change jobs and can't enjoy a nightly does of near studio quality music.

Other Thoughts: its mostly the way i used these that killed them premature. they are a goof buy

1 out of 1 people found this review helpful. Did you? Yes No

  • Michael J.
  • 10/20/2012 12:17:56 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsFantastic Sound

Pros: These Sonicpro headphones have to be the best I have ever owned. The sound clarity and detail from low, mid and high ranges are the best I have heard to date, even from earbuds selling at twice the price. I am really, really picky when it comes to over the ear or in the ear headphones.

Cons: Not really a con, but the cord on these headphones are really well built; thus, a bit thick and need some time to break-in properly.

Other Thoughts: The bottom drawer of my bedside table is nearly full of just earbugs. In the past, Sony seems to have been my preference. I was very disappointed with my Klypski. They make great speakers for large sound systems but their earbugs and a little lacking. Boise does not even complete. The pure clarity of sound with little, if any, distortion is wonderful with respect to the audio-technica Sonicpro. I was both surprised and very pleased with this puchasd.

2 out of 2 people found this review helpful. Did you? Yes No

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