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Solid Bass In-ear Headphones

U.S. Two-Year Limited End-User Warranty

*Manufacturer's Suggested Retail Price. Actual selling price may vary; please check with an authorized Audio-Technica dealer.

  • Overview
  • Features
  • Specifications
  • Reviews
  • Q & A

  • Overview

    The compact ATH-CKS55BK Solid-Bass in-ear headphones deliver remarkably full and textured bass. A-T's innovative Dual Chamber Mechanism extends bass response without compromising mid- and high-frequency content. A two-position post adjusts the earpieces for better fit and sound isolation. Advanced 12.5 mm drivers reproduce powerful sound and efficient signal transfer. A carrying pouch and ear tips (XS/S/M/L) are included.
  • Features

    • Solid Bass System delivers rich bass and outstanding sound

    • Dual Chamber Mechanism consists of two chambers to reproduce richer and deeper bass

    • New two-position post adjusts earpieces for a better fit and sound isolation

    • 12.5 mm direct diaphragm drivers reproduce powerful sound

    • 3.9' elastomer sheath cable

    • Includes carrying pouch and ear tips (XS/S/M/L)

  • Specifications

    Driver Diameter12.5 mm
    Frequency Response5 - 24,000 Hz
    Maximum Input Power100 mW
    Sensitivity105 dB/mW
    Impedance16 ohms
    Weight6 g
    Cable1.2 m
    Connector3.5 mm L-type mini-stereo, gold-plated
    Accessories IncludedPouch, ear tips (XS/S/M/L)

  • Reviews

    i hope cks55 will be canceled for discontinued.


    Five Stars The best sound the best pricing recomended

    Jakarta Indonesia


    Best for the money


    I use these for everything ... From casual listening to listening while exercising( biking, the gym and even while playing tennis). They have phenomenal sound and amazing bass!

    Indianapolis, IN




    Well i was looking for in ear head phones for a while, i bout beats by dre first because of the hype about them.....things kept slipping out my ear. I have the ws55i from audio technika and i was blown away. So after that i tried these i got them, put them in my ear and boom immedietly loved them. Fit my ear from the get go. really cheap for stunning quality sound. Highly recommended :)


    Incredible Sound Quality


    I have had my pair for over 3 months and have had no problem yet. I turn my music up very loud (to the point of where it hurts my ears a little) and there is still no distortion! Incredible! I have a pair of $200 Beats By Dre over-ear headphones and these Audio-Technica earbuds have better quality than those! Strongly Recommended.


    Great Headphones!


    Got these headphones a few months ago and have not been disappointed yet. They have some of the best sound I have ever heard from a set of in ear buds, and are amazingly comfortable. It did take a little while before I found the right ear bud size and position but after that, I have had no problems whatsoever. Great for everything from casual listening to intense music playing and recording. Overall if you are looking for a good set of in ears, this is it.


    ATH-CKS55BK Solid Bass In-ear Headphones

    5.0 5


  • Q & A

    Is there a new version of these? Or something comparable?


    You may try the ATH-CKS550iS.


    Hi. I own a set of this in-ear headphone for almost 2 years and today the left side stopped working due to a wire issue (bad contact) very close to the flexible rubber of the left speaker - I mean, just under the left earphone. I'm sure the wire had broken apart. Is it possible and affordable to repair it or I'll have to throw it away? Thanks!


    Please contact our Service Department at (330) 686-2600 ext 5003 or at for assistance with this.


    Just wondering if these CKS55BK have a mic?


    No, there is not an inline mic.


    are these earbuds considered noise canceling?


    Thank you for your inquiry. The ATH-CKS55BK headphones are not Active Noise Canceling like our QuietPoint line of headphones. They do provide passive noise canceling.


    Will this work on Andriod devices? I've seen reference to it being labeled as an iPod/iPhone device, and i'd like to confirm whether or not it works with Android before buying a pair.


    They work with any device that uses a 3.5mm jack for audio. Most Android devices have this, since it is pretty much standard at this point.


    The ATH-CKS55 will work with any device that features a 3.5mm headphone output, such as smart phones and computers. HOWEVER, If you are referencing the ATH-CKS55iBK, the "i" in the title means that it is meant for "iPhone/iPad". If it is an Audio-Technica headphone and has an "iS" in the title, it is meant for all (compatible) smart devices, including Android handsets. You may use the ATH-CKS55iBK with an Android device, but will have limited functionality (i.e. you would only be able to answer/hang-up phone calls, skip track, and play/pause music. Volume-Control will not work). Thanks!


    How do the earpieces extend? How do I extend the earpiece? I tried to pull, but I don't want to break them.


    Thank you for your inquiry. The post itself does not actually move. On the post are different rings that hold the tip. You can place the tip on either ring to fit your ear.


    Can I get some earbuds? I lost an earbud and was just wondering if I can buy another set of them.


    If you are located in the United States, you may contact the Audio-Technica Parts Department at: If you are not located in the United States, please contact the A-T Parts Department of that world-area. Thanks!