[Radius' proud Double Be series] The HP-TWF31 uses a ceramic layer of Taiyo Yuden piezo diaphragm to reproduce the fine high-frequency range of high-resolution sound sources. The ceramic layer (piezo) vibrates firmly even when a minute sound source signal is input. It clearly depicts high-definition sound and airiness.
[DDM Driver] The driver uses the DDM (Dual Diaphragm Matrix) method, which divides the mid-low and high range sounds into two independent diaphragms and arranges them on the same axis. The Double Bet Intérieur uses a diaphragm made of ceramic piezo, a piezoelectric element, in the tweeter section. This allows the ceramic piezo to vibrate firmly even when a minute sound source signal in the ultra-high range, which is unique to high-resolution sound sources, is input, and the signal is transmitted to the diaphragm made of high-rigidity nickel alloy, resulting in high-definition sound reproduction.
[Uses Taiyo Yuden Piezo Diaphragm] In order to reproduce the fine high-frequency range of high-resolution sound sources, a ceramic layer of Taiyo Yuden Piezo Diaphragm is used. The ceramic layer (piezo) vibrates firmly even when a minute sound source signal is input. High-definition sound and airiness are clearly depicted.
[Supports MMCX re-cabling] The head part of the earphones supports MMCX connector re-cabling, so you can change to your favorite cable and enjoy the difference in sound quality. Even if the cable breaks, you can use the earphones for a long time by just changing the cable.
*Type: Dynamic type * Piezo type (DDM method) *Driver: Dynamic diaphragm Φ13.0mm * Piezo diaphragm Φ12.0mm *Frequency range: 10Hz to 40000Hz * *Maximum input: 20mW
[Note] In order to improve the quality of radius products, we inspect them before shipping, update their firmware, and periodically recharge them. Therefore, there may be some products that have been temporarily opened, but they are unused and there is no problem with the quality. Thank you for your understanding.

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