TANCHJIM X EFFECT AUDIO Collaboration FORCE Wired Earphones 2DD Composite Dual Dynamic Driver Highly Conductive Silver-Plated UP-OCC Single Crystal

[Composite Diaphragm x Dual Dynamic Structure] FORCE features the DTM4 ULTRA dual dynamic driver configuration. An 8.2mm beryllium-coated dome diaphragm with PU suspension handles mid- and high frequencies, while a 10mm titanium-coated dome diaphragm with PU suspension handles low frequencies. The PU suspension provides elasticity in the low frequencies while suppressing the "metallic" tone in the high frequencies, resulting in a natural and delicate listening experience. The beryllium dome's high rigidity and light weight improves the extension of the high frequencies, while the titanium dome suppresses split vibrations, resulting in tight, powerful low frequencies with little distortion even at high volumes. [Custom Cable Co-Developed with EFFECT AUDIO] This cable, jointly developed by TANCHJIM and EFFECT AUDIO, is based on NEOTECH's single crystal copper (UP-OCC) technology and features a four-core 26AWG single crystal copper silver-plated conductor. The internal structure has been adjusted to emphasize high-frequency expression, resulting in a powerful and stable sound foundation, deep bass, and sparkling high-frequency extension. The exterior uses EFFECT AUDIO's UltraFlexi technology, providing high flexibility and a soft feel, making it easy to handle. High-Precision Frequency Domain Division Technology: HPFD-Seg (High-Precision Frequency Domain Division) technology allows the 8.2mm and 10mm dynamic drivers to operate within a comfortable operating range with low distortion and close to the target frequency response. Even during the division process, the signal is converted efficiently from electro-acoustic without significantly compromising sensitivity, maximizing the FORCE's sound quality potential. This technology significantly reduces the total harmonic distortion of FORCE compared to multi-BA configurations, achieving a total harmonic distortion of just 0.036%. [Open-Back Design] FORCE's unique open-back design minimizes sound degradation by suppressing sound reflections. By efficiently diffusing reflected sound with the air, unwanted vibration energy is suppressed, reducing distortion. This design expands the sound field horizontally and vertically, improving high-frequency extension. Furthermore, despite its open design, sound insulation is excellent, eliminating the worry of sound leakage. [Air Release Tube Design] The intricate ventilation structure releases air pressure inside the ear canal, automatically balancing the pressure inside and outside the ear canal. This eliminates the "clogged ear" feeling that many earphones experience. The reduced pressure on the eardrum improves bass reproduction, resulting in a more natural, natural listening experience.