TANCHJIM x EFFECT AUDIO Collaboration FORCE Wired Earphones 2DD Composite Dual Dynamic Drivers High Conductivity Single Crystal Copper Cable HIFI IEM

We offer a wide variety of products, and the following precautions apply to some of them. Please note that they are listed for all products. 【Voltage Compatibility】Designed for Japanese voltage (90-110V). Using with a different voltage may cause malfunction. 【Plug Type】Japanese plugs (A or B type). Use a conversion adapter if needed. 【Transformers & Adapters】Transformers adjust voltage; adapters only change plug shape. Using an adapter without a transformer may damage the product. 【Liability】We are not responsible for damages caused by improper use, such as using the product without a transformer. 【Composite Diaphragm x Dual Dynamic Structure】FORCE employs a DTM4 ULTRA dual dynamic driver configuration. The mid-high frequencies are handled by an 8.2mm beryllium-coated dome diaphragm with PU suspension, while the low frequencies are handled by a 10mm titanium-coated dome diaphragm with PU suspension. The PU suspension provides elasticity to the low frequencies while suppressing the "metallic" tone of the high frequencies, resulting in a natural and delicate listening experience. The beryllium dome is highly rigid and lightweight, improving the extension of the high frequencies, while the titanium dome suppresses partial vibrations, resulting in tight and powerful bass with minimal distortion even at high volumes. [Custom Cable Jointly Developed by EFFECT AUDIO] This cable, jointly developed by TANCHJIM and EFFECT AUDIO, is based on NEOTECH (Wanlong)'s single-crystal copper (UP-OCC) technology and employs a 4-core 26AWG single-crystal copper silver-plated conductor. Through adjustments to the internal structure that prioritize high-frequency expression, it achieves a powerful and stable sound foundation, deep and resonant bass, and sparkling high-frequency extension. The outer casing uses EFFECT AUDIO's patented "UltraFlexi" technology, providing high flexibility and a supple feel, making it easy to handle. 【High-Precision Frequency Band Division Technology】HPFD-Seg (High-Precision Frequency Division) technology allows 8.2mm and 10mm dynamic drivers to operate in a "comfortable operating range" with low distortion and close to the target frequency response. Even during the division process, sensitivity is not significantly compromised, ensuring the efficiency of the signal's electro-acoustic conversion and maximizing the sonic potential of FORCE. By employing this technology, FORCE significantly reduces overall harmonic distortion compared to multi-BA configurations. The overall harmonic distortion rate is only 0.036%. 【Open-Back Design】FORCE employs a unique open-back design to minimize sound quality degradation by suppressing rearward sound reflections. By efficiently diffusing reflected sound with the air, it suppresses unwanted vibration energy and reduces distortion. This design expands the sound field in both the horizontal and vertical directions, improving high-frequency extension. Furthermore, despite its open design, it ensures excellent sound insulation, eliminating concerns about sound leakage. [Patented Air Release Tube Design] The complex ventilation structure releases air pressure inside the ear to the outside, automatically adjusting the pressure balance inside and outside the ear canal. This eliminates the "ear blockage (pressure blockage)" feeling often experienced with many earphones. By reducing the pressure on the eardrum, bass reproduction is improved, resulting in a more natural and authentic listening experience. Brand Name: TANCHJIM Product Name: FORCE Driver Configuration: 8.2mm Dynamic Driver + 10mm Dual Cavity Hybrid Dynamic Driver Driver Technology: DMT4 Ultra Waveguide Technology: Low Distortion Waveguide Design Diaphragm Material: 8.2mm: PU Edge + PET Beryllium Vapor Deposited Dome Composite Diaphragm 10mm: PU Edge + PET Titanium Vapor Deposited Dome Composite Diaphragm THD (Total Harmonic Distortion): ≤0.05%@1kHz 94dB Impedance: 17Ω ±10% Sensitivity: 120dB/Vrms Frequency Response: 8–48kHz Cable Brand: EFFECT AUDIO Connector Standard: 0.78mm 4PIN Detachable Included Plugs: 3.5mm / 4.4mm / DSP-Type-C Cable Material: Silver-Plated Single Crystal Copper Cable Length: 1.25m