Cotsubu for ASMR MK2/3D

New colors that are easy to use daily have appeared in the popular ASMR dedicated wireless earphones, in limited quantities!

The new color "BLACK" has been added to COTSUBU for ASMR MK2, and the new color "GRAY" has been added to COTSUBU for ASMR 3D. Since they are produced in limited quantities, please take this opportunity to purchase them.

"COTSUBU for ASMR MK2" is the successor to the world's first completely wireless ASMR dedicated earphones, COTSUBU for ASMR, which further evolved the sound quality of the standard "E500" as an ASMR dedicated wired earphone of our brand final. It adopts the same "super close sound field" sound quality design as the previous model COTSUBU for ASMR, allowing the sound image to be positioned close to the ears, creating an immersive experience as if you are in a dummy head microphone.

Also, to enjoy ASMR content more, the "COTSUBU for ASMR 3D" that supports the "close 3D sound field" reproduces the space image outside the head clearly, allowing you to feel as if you are actually in that space. For example, when listening to "whispering voices" content with COTSUBU ASMR MK2, you feel the voice directly entering your head, filling it with the voice itself. In contrast, with COTSUBU ASMR 3D, you can feel the movement of the partner's lips and the strength of their subtle breathing, creating a sense of presence as if the partner's mouth is right next to your ear.

As a new feature, both models are equipped with an "ASMR mode" that disables tap operations and guidance voice so that you can deeply immerse yourself in the world of ASMR.

Enjoy two different new ASMR experiences with an easy-to-use new color for everyday use.

Completely Wireless Earphones Dedicated to ASMR

It was widely known that when listening to sound sources created with ASMR or binaural recording with conventional earphones or headphones, a unique sense of discomfort in the high frequency range would occur. Researchers involved in acoustics were aware of the cause, but there were no sufficiently successful examples of countermeasures. In August 2019, through a new approach by our research and development team, the "E500" was born, allowing the sound color, spatial image, and directionality intended by the creator to be felt final. After that, due to the vividness of the sound that makes the distance from the microphone and which side the voice is coming from intuitively understood, along with the performer's voice and breathing, it gained popularity on SNS as "sexy earphones," and also became used as monitor earphones for sound checks in ASMR content and 3D game production sites. Now, among ASMR fans, the "E500" is widely loved as the standard ASMR earphone. On the other hand, there were many requests from the beginning to make the "E500" wireless. However, to completely wireless the sound of the "E500," fine adjustments of the speaker part (driver) inside the earphone are required, and since the base and battery must also be housed inside the earphone body, realizing the necessary structure for adjustment was difficult, making productization not easy. By utilizing the know-how of various earphones and headphones sound tuning developed so far with final and ag brand, we were able to productize the world's first completely wireless earphone dedicated to ASMR that evolved the "E500." And now, in addition to the renewed "COTSUBU ASMR MK2," we have newly lined up "COTSUBU for ASMR 3D," allowing you to enjoy 3D audio content such as ASMR with two variations. ※ Self-researched

Two Different Sound Quality Designs Dedicated to ASMR

"COTSUBU for ASMR MK2" adopts a sound quality design specialized in the "super close sound field," allowing the sound image to be positioned close to the ears, creating an immersive experience as if you are in a dummy head microphone. On the other hand, "COTSUBU for ASMR 3D" reproduces the space image outside the head clearly, allowing you to feel as if you are actually in that space. Especially when using it for image content with binaural recording, the directionality and distance sense of voices and sound effects align with the movements of objects within the visual field, making an overwhelming immersive experience possible. Comparing the sound quality of both models results in the following illustration. For example, in "whispering voice" content, you feel the voice directly entering your head, filling it with the voice itself. Meanwhile, with "chewing sound," the sound itself resonates inside the head, making you feel as if you are chewing. Also, "shampoo" content allows you to feel the rubbing sound of hands massaging the scalp and the sound of enveloping bubbles from the core of your head, giving a sense of being shampooed. Additionally, "environmental sounds like crackling fire" allow you to feel as if the fire is right in front of you, with sounds like crackling sparks.

On the other hand, COTSUBU for ASMR 3D reproduces the space image outside the head clearly to enjoy ASMR content more, allowing you to feel as if you are actually in that space. In "whispering voice" content, you can feel the movement of the partner's lips and the strength of their subtle breathing, creating a sense of presence as if the partner's mouth is right next to your ear. Meanwhile, with chewing sounds, in addition to the chewing sound, you can also feel the surrounding space, allowing you to feel the whole series of actions from taking it in hand to carrying it to the mouth and chewing.

Equipped with "ASMR Mode" to Prevent Accidental Touch

You can switch by tapping the body 5 times, disabling tap operations and guidance voice. During mode, only operations of tapping 5 times continuously are accepted, and it is also possible to return to normal mode. Please use it when you want to prevent accidental touches or when you want to immerse yourself more in ASMR content

Only 3.5g per side! Achieving high sound insulation with the smallest and lightest deep fit design

The earphone body is a super-compact type with a minimum weight of about 3.5g per side. It is so "light" that you might forget you are wearing it.
It fits snugly into any ear, making it difficult for the earphones to fall out, even when attaching or removing a mask.
Additionally, the "deep fit design" ensures a secure fit even for small ears, achieving high sound insulation without active noise canceling.

Ear pieces that provide supreme comfort

These ear pieces, designed for "supreme comfort," come in three sizes. They are adapted from the SS size ear pieces and fit comfortably for those with small ears, reducing ear canal fatigue even after long periods of use. Furthermore, the ear pieces use a semi-transparent type that doesn't stand out, maintaining a clean appearance even in places like trains.

Adopted "Adjust Fit Mechanism" for optimal fit for anyone

While compact, the "Adjust Fit Mechanism" is adopted for a higher fit. Since ear shapes vary among individuals, it is challenging to maintain an optimal fit for everyone with a specific shape. By minimizing the size and adopting a shape design with an adjustable "vertical" or "horizontal" hold position, both high retention and comfortable fitting are achieved.

Equipped with "Auto Pairing Function"

The charging case is thin and compact, allowing easy opening and closing with one hand. Moreover, simply opening the charging case lid starts "Auto Pairing," allowing you to listen to content immediately after wearing the earphones. Additionally, when the main body is stored in the charging case and the lid is closed, the power automatically turns off, ensuring peace of mind without worrying about forgetting to turn off the power.

Equipped with "Single Ear Mode"

By returning one side of the earphone to the case, it automatically switches to "Single Ear Mode" without interrupting the sound. In "Single Ear Mode," it switches from stereo playback to monaural playback, so there is no discomfort when enjoying sound with one ear. For example, it is useful when you want to enjoy content without shutting out external sounds, such as listening to audiobooks or radio while cooking with one ear. However, to enjoy binaural recorded sound sources, it is recommended to use both earphones as it is important to hear where the sound is coming from.

*1: "Single Ear Mode" is only applicable during voice playback.
*2: Monaural playback refers to playback from a single speaker, and switching to monaural playback is only supported with SBC/AAC connections.

IPX4 water resistance for everyday use

With IPX4 water resistance, you can use it without stress even on rainy days or during sports, providing peace of mind against sudden weather changes.

Powder snow coating finish that doesn't show fingerprints

The body is matte-finished with our independently developed "powder snow coating." It is resistant to skin oils and fingerprints, so you don't have to worry about dirt.

Equipped with high-performance MEMS microphone for comfortable communication

The body is equipped with a high-performance MEMS microphone. Additionally, noise canceling processing by software removes surrounding noise and emphasizes the voice, delivering a clear voice to the conversation partner. Moreover, the natural sound quality that is less tiring to listen to allows you to hear the other person's voice clearly even during long meetings in telework.

Guidance voice handled by Junko Kubo, active internationally

The guidance voice for actions such as "Power ON" and "Bluetooth Connected" is handled by Junko Kubo, a free announcer active internationally.
Junko Kubo has been responsible for the guidance voice for products since ZE8000MK2 and later final/ag products.
*Guidance voice is only available in English.


Born in Tokyo in 1972. Spent elementary school years in England and high school years in America. Joined NHK after graduating from university. Since 2004, she has been active as a free announcer, appearing on TV and radio, as well as writing and translating picture books. Currently residing in New York with her family. In 2014, she obtained an international Montessori teacher qualification in America and started working as a teacher at a Montessori kindergarten, expanding her activities both domestically and internationally with keywords like "children," "language," and "education."
Official Instagram: https://www.instagram.com/kubojunkony/

Single ear purchase possible in case of loss

Within the warranty period, if one ear is lost, it is possible to purchase a single ear. Please check the ag official site SUPPORT page for details.