A New Classic Audiophile-Grade Truly Wireless Earbuds

The ZE3000 takes its name from the E3000, the brand’s most widely recognized wired earphones, which have sold hundreds of thousands of units since its launch in 2017 and have won an unprecedented ten consecutive Gold medals at Japan’s largest audio awards, the VGP. At the time of the E3000’s launch, most earphones in the same price range were designed to make an impactful impression at first listen, with an ostentatious sound that emphasizes both the low and the high frequencies.

The ZE3000’s “f-LINK Damping System” creates a natural sound similar to that of wired earphones, while the newly developed “f-Core for Wireless” driver unit delivers ultra-low distortion, resulting in a sound quality that is unmistakably different from conventional truly wireless earbuds. We want to convey the intentions of artists and creators as they are by creating a clear and natural sound through ultra-low distortion. In addition, the shape of the housing and the ear tips “TYPE E Truly Wireless Exclusive Edition”, has been cultivated through the development of wired in-ear earphones to achieve excellent wearing comfort, suppress external noise and achieve excellent noise isolation performance.

Newly Designed Driver “f-Core for Wireless” to Realize Ultra-Low Distortion

With the ZE3000, instead of fully depending on the equalizer, we’ve improved the fundamental performance of the driver units and optimized the acoustic space inside the earbuds to perfect the sound quality so that it is satisfying enough to listen to and the equalizer is only utilized to make precise pinpoint effective corrections in narrow bands. If there is a variation of about 3dB level, which is the typical accuracy, the equalizer correction will lead to unnatural results. In order to solve this problem, we have developed a new “f-Core for Wireless ” driver, which has been manufactured from scratch to achieve ultra-low distortion. Typically, the diaphragm of an earphone is made through monolithic injection molding where plastic material is injected into a mold with the center and surround are formed at the same time. However, in the case of small-diameter driver units, tangential corrugations are normally added on the surround to stabilize the movement of higher amplitude resulting in a rotational movement of the diaphragm that causes distortion. In the case of “f-Core for Wireless”, the center is made of a special resin that is both light and hard. The surround of the diaphragm is made of a special, extremely flexible silicone, which ensures smooth and undistorted diaphragm movement. With the combination of these 2 special materials, despite its 6mm diameter, the area of effect of its center is equivalent to that of a 9mm diameter monolithic injection molded diaphragm. This also contributes to the reduction of distortion. In addition, the special silicone surround and center are directly molded together without the use of adhesives, which improves assembly accuracy and significantly reduces weight, thus contributing to a reduction in distortion.