When you hear music with a heavy bass line, you can’t help but feel the urge to dance. Some say its just human instinct. Getting the same experience with in-ear headphones requires a secure fit with excellent sound isolation. Any sound that escapes lessen the intensity of the bass.

Through a variety of models, Audio-Technica’s deep bass headphones have focused on the relationship between bass and fit for over 10 years.

The ATH-CKS50TW truly wireless headphones combine advanced acoustic technology for stunning bass with a comfortable fit that prevents that deep bass sound from escaping.

The built-in high-capacity battery provides 20 hours of powerful, continuous bass. All you have to do is get lost in the music.

Newly designed drivers for a revolutionary music experience  

The newly developed large-diameter drivers (9 mm HD TWS drivers with deep bass) deliver deep, powerful bass while ensuring a comfortable fit—an important factor for truly wireless headphones. The airtight fit prevents the bass from escaping to deliver a unique, stress-free music experience.

Acoustic ducts for rich low-frequency sounds  

Ducts on the back of the driver control airflow to ensure a detailed acoustic space. The design allows for ideal movement of the driver to deliver rich low-frequency sounds.

Up to 20 hourswithout recharging—the best in class!  

The high-capacity battery provides around 20 hours*1 of continuous playback without charging. Using the headphones with the charging case allows as much as 50 hours*2 of playback, significantly reducing how often recharging is necessary. To help ensure extended usability when not using the charging case, the power can be turned on and off directly on the headphones.

*1 As of September 2021 according to in-house figures. With noise-cancelling disabled. Playback for around 15 hours is possible with noise-cancelling enabled. Results may vary depending on usage conditions.

*2 Results may vary depending on usage conditions.

Fast-charging support  

Charging for just 10 minutes (approx.) provides about 90 minutes* of continuous playback. Simply place the headphones in the charging case and plug the case in for a quick charge before heading out.

*With noise-cancelling disabled. Results may vary depending on usage conditions.

Block outside sounds at the press of a button  

The feed-forward active noise-cancelling function ensures an immersive audio experience even in noisy environments such as those with air conditioners or purifiers or on public transportation.

*Noise-cancelling and hear-through functions are disabled by default.

Enjoy deep bass while being aware of your surroundings with hear-through  

The built-in microphone captures ambient sounds so users can remain aware of their surroundings during use. The hear-through function is useful for listening to music while walking, doing housework, working remotely, or using public transportation. The comfortable fit ensures a natural experience when using the hear-through function.

Easy-to-wear, secure fit  

The newly developed structure ensures a stable fit that prevents the headphones from falling out of the ears. The increased contact surface between the headphone and ear reduces the burden, providing a light, natural fit. The headphones are comfortable even for extended periods, allowing you to enjoy deep bass for longer.

Hybrid eartip structure combining hard and soft silicone material  

The headphone’s eartips are soft and pliable for a gentle fit. Meanwhile, the parts of the shaft that transmit sound are stiff to reduce adverse impacts on sound quality and noise-cancelling. The new, hybrid structure utilizes the varying hardness of the two silicone materials to create a comfortable fit with superior sound performance.

The tactile umbrella fits naturally in the ear canal for enhanced airtightness, an essential factor for the noise-cancelling function. The high-strength shaft also minimizes sound transmission loss to bring detailed audio directly to the eardrum.

Intuitive operation that doesn’t hamper enjoyment  

Designed for reliable, stress-free operation for a more enjoyable experience. The left button adjusts the volume and switches between hear-through and noise-cancelling functions, while the right button lets you easily start/stop playback, skip between songs, or enable quick hear-through.

Quick hear-through for instant volume adjustment and playback of voices  

The quick hear-through function is perfect for tuning in or out of your surroundings by allowing you to hear announcements or listen to those around you. This single-action function instantly lowers playback volume and captures ambient sounds while enhancing the vocal bandwidth.

Minimize audio lag with Low Latency Mode  

Enjoy a more immersive experience with minimal sound delay while playing games or watching videos on your smartphone or tablet with Low Latency Mode.

*Low Latency Mode can also be turned on/off from the Connect app. Bluetooth connections may be affected by obstacles and ambient radio wave conditions.

Rain and water splashproof design  

The headphones boast an IPX4*-equivalent JIS/IEC protection rating (headphones only). The splashproof design means you never have to worry about keeping the headphones dry in sudden rain showers or when exercising.

*An IPX4-equivalent rating signifies the product will not be adversely affected by water splashing from any direction. This rating does not ensure protection in hot and humid locations such as baths and showers. The product is not completely waterproof.

Clearer voices with Qualcomm® cVc™ Generation 8.0  

Enjoy improved microphone performance for natural-sounding calls. Whether in the office, at home, or in an online class, your voice will be captured and transmitted clearly.

Sidetone function for more natural conversations  

Wearing headphones makes hearing your own voice difficult. The sidetone function allows you to hear your own voice during calls for more natural-sounding conversations, almost as if you weren’t wearing headphones at all. This can prevent you from talking louder than needed—a common problem during calls.

Multipoint support for two simultaneous Bluetooth® connections  

You can connect to both your smartphone and computer or tablet at the same time, so you’ll never need to worry about switching devices again. Respond immediately to incoming calls on your smartphone while enjoying videos on your tablet without having to re-pair.

Adjustable button assignments for unique operation patterns  

Select a user-friendly operation pattern that best suits your preferences and usage from the Connect app. Available patterns include music priority and reversed left/right options.

Highly stable connection for interruption-free listening  

Despite being chock-full of useful functions, the headphones are compact, with a unique antenna structure designed to ensure stable connectivity while fitting in limited space. This helps prevent sound from being interrupted even in train stations or other crowded locations.

Qualcomm® TrueWireless™ Mirroring* for independent transmission  

Independent transmission to the left and right sides reduces sound interruptions and delays for videos on all devices, including Android and iOS smartphones.

When connecting a primary headphone via Bluetooth, the secondary headphone will mirror the audio signal of the primary headphone for independent transmission.

Preventing audio signal exchanges from primary and secondary headphones reduces audio interruptions and delays. The reduced communication load on the primary device also helps minimize the amount of power that is used.

Adjustable sound quality, volume, and balance  

Equalizer: Customize the sound to your liking with four equalizer presets in addition to the original (flat) setting, or customize the equalizer settings to create your preferred sound. The graphic equalizer makes it easy to intuitively adjust the sound settings to perfectly suit your tastes.

Volume step adjustment: Easily fine-tune the volume adjustment level to get the perfect listening comfort for your ears. Use the app to change the adjustment steps from 16 (default) to 32 or 64 steps for more fine-grained control.

Other settings: Easily switch codecs or locate lost headphones using the app.

Automatic power-on when removed from the case  

The headphones automatically turn on when they are removed from the case for quick usability*. When the headphones are put back in the case, they power down and begin charging. The power can also be turned on/off directly from the headphones.

*Pairing is required on first use.

Supports Fast Pair for convenient connection with Android devices*  

Set the headphones to the pairing mode and touch the pop-up that appears on the screen. in one touch, you can pair with your Android devices. You can even check to see where you last placed it.

* Only one Android device can be paired by using Fast Pair.

Google and Android are trademarks of Google LLC.

Single-ear usability  

Listen to music or make calls from one or both headphones, whichever best suits your usage environment.

LED indicator lamps for quickly checking remaining battery power  

The four LED indicator lamps light up or flash whenever the charging case is opened or closed so the user can see the charging status or remaining charging case battery power at a glance.