Fission in Ear HiFi Earphones 1DD IEM, 4-Level Adjustable Filter | Audiophile In-Ear Monitors with 3 Tuning Nozzles, 12 Customizable Sounds, CNC Alloy Shell, Custom Tuning via App, 2 pin

DMT5 Flagship Dynamic Driver, CNC Precision Acoustic Wave GuideFeatures DMT5 dual magnet, dual chamber structure. THD (Total Harmonic Distortion) at 1kHz achieves less than 0.056% at 94dB playback, delivering extremely faithful tonal reproduction and a vast soundstage. Furthermore, it incorporates a high-precision waveguide made of brass, CNC-machined based on FEA analysis, which improves high-frequency conduction efficiency and enables an open and delicate high-frequency response. 4-Stage Filter × 3 Nozzle Combinations, 12 Customizable SoundsFeatures a 4-stage adjustable analog filter knob, allowing seamless switching between four sound modes: Pops, Vocal, Ambient, and Monitoring. Additionally, it comes with three different material nozzles (brass/stainless steel/titanium), which can be freely swapped to enjoy 12 distinct sound styles. This versatile tone adjustment capability enriches and expands your listening experience. Dual Mesh Structure, Guided Vent DesignThe outer layer features stainless steel mesh, while the inner layer employs DWR water-repellent coated mesh, achieving both protective performance and sound permeability. The rear cavity structure, designed based on finite element analysis, combines with a vent valve to ensure greater airflow and optimal volume. This, paired with the 5th-generation DMT dynamic driver, delivers an exceptionally wide dynamic range. High-Quality Recable Design, 3 Plug Types for Multi-Device CompatibilityFeatures a high-purity Litz copper silver-plated cable as standard equipment, offering excellent flexibility, high durability, and a tangle-resistant design that prevents noise interference. Adopts an interchangeable plug design, including three connector types: 3.5mm, 4.4mm, and a built-in DSP chip USB Type-C. Compatible with various audio devices. (Mobile devices: Android system only. PC devices: Windows system only) Lightweight Aluminum Alloy Housing, Comfortable FitThe FISSION body utilizes lightweight aluminum alloy material, featuring a teardrop-shaped sapphire glass accent on the front panel. It offers excellent wear and corrosion resistance. Furthermore, its ergonomic design, based on data from over 3,000 ear shapes, ensures a deep, comfortable fit and optimal insertion angle. This enables more natural acoustic coupling, allowing high-frequency response to resonate smoothly