Premium Open-Back Design
Unlike traditional IEMs, the FORCE uses an open-back rear chamber featuring a fine steel mesh that allows air and sound waves to flow naturally. This unique design minimizes internal reflections and ear pressure, creating a more expansive soundstage while significantly reducing listening fatigue. Despite being open-back, the FORCE still offers excellent passive noise isolation and minimal sound leakage thanks to precise engineering and acoustic damping.
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Flagship Dual Dynamic Driver Architecture
FORCE houses two custom dynamic drivers: an 8.2mm beryllium-coated mid-high driver and a 10mm titanium-coated bass driver, both using PU-suspended diaphragms. This setup, based on TANCHJIM’s DMT 4 Ultra driver platform, provides powerful bass, detailed mids, and sparkling treble. The materials and suspension allow for fast transient response, natural tonality, and rich dynamics without distortion—even at high volumes.
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HPFD-Seg Frequency Division Technology
To ensure each driver performs optimally, FORCE employs TANCHJIM’s proprietary HPFD-Seg crossover technology. This high-precision frequency segmentation keeps both drivers working within their ideal range, reducing harmonic distortion and phase issues often found in multi-driver setups. The result is a cohesive, high-resolution sound that preserves micro-detail and emotional nuance.
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Cable by EFFECT AUDIO
The included cable is handcrafted by EFFECT AUDIO using four strands of silver-plated UP-OCC single-crystal copper in a custom coaxial weave. This high-performance cable delivers exceptional signal purity and electrical conductivity, enhancing bass authority and treble extension. EFFECT AUDIO’s UltraFlex™ jacket makes it soft, skin-friendly, and durable for all-day comfort.
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Built-In DSP and Custom EQ
The DSP version of FORCE supports USB-C digital output and integrates seamlessly with TANCHJIM’s official tuning app. Users can fine-tune their sound using a 5-band parametric EQ or choose from curated presets including Harman 2013, 2016, and 2019 target curves. Community presets and game sound profiles are also available, giving users endless customization options.
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Ergonomics and Comfort Redefined
The FORCE’s shell is crafted from medical-grade, high-transparency resin for a second-skin fit. The outer faceplate is CNC-machined aluminum with a fine sandblasted finish, creating a striking visual contrast. The internal weight distribution is carefully balanced to reduce pressure points, and with the included T-APB pressure-balanced eartips, the fit remains stable and fatigue-free even during long listening sessions.
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