Features:- >Premium Dual-Magnetic Circuit Dynamic Driver Unit with Dual Layered Housing. >Magnetic Conductivity Enhancer. >Semi-Open Acoustic Cavity Structure. >Semi-Crystalline PU Polymer Diaphragm Coil. >Tuned in Line With Harman Curve 2019. >Exquisite Finish with 316L Stainless Steel Ear Cavities. >All-New Ultra-Thin HS18 Ear Tips. >High-Quality HB1 Storage Case. >High-Quality Monocrystalline Silver-plated Copper Cable. Technical Specifications:- >Impedance: 32Ω. >Frequency Response Range: 20Hz-20kHz. >Sensitivity: 108dB/mW. >Max Input Power: 100mW. >Unit Weight: 8.3 grams(each unit). —SpecificationsSplit— JD7 is a brand new single-dynamic driver IEM equipped with a dual-magnetic dual-layered dynamic driver unit that produces a powerful sound performance. The pair features a semi-open back cavity structure and an exquisite 316L stainless steel build. FiiO has tuned it in line with Harman Tuning Curve 2019 which promises a clean, precise, accurate sound with an open soundstage. High-Power Dual-Magnetic Dynamic Driver Unit:- FiiO JD7 features a 10mm dynamic driver unit with an internal and external dual-magnetic circuit design. It produces a powerful magnetic flux that allows for swift movement of the diaphragm coil and pushes more air for an impactful sound presentation. The JD7’s driver is enclosed in a dual-layered housing design where each layer features a damping system to better control unwanted vibrations and resonances. The resulting output is super clean, lower in distortion, and has excellent resolution. Specially-Developed Magnetic Conductivity Enhancer:- FiiO has featured a high-powerful magnetic conductivity enhancer. It enhances its magnetic flux reaching over 1 Tesla, this provides the pair a high sensitivity of 108dB enabling easy driveability off any given source. Semi-Crystalline PU Polymer Diaphragm Coil:- The 10mm Dynamic Driver inside FiiO JD7 features a high-quality Polymer diaphragm coil with a PU gasket. It’s ultra-thin in nature and has a stiff build that minimizes unwanted vibrations and ensures quality sound output. PU gives a unique and lush presentation to the output signal. Tuned Following Harman Curve:- FiiO has adjusted the tuning of the latest JD7 following very closely to the Harman Curve(In-Ear 2019). It promises quality bass response, clear midrange, and crisp treble response that ensures quality sound for almost any genre of music!! Exquisitely Designed Stainless Steel Semi-Open Cavities:- FiiO JD7 features high-quality 316L stainless steel ear cavities. The shells are made up of metal powder using injection molding technology. The pair has a rich, premium textured finish. FiiO has designed them with a semi-open back cavity design that helps in getting an open soundstage as well as a comfortable wearing experience with the pair by releasing the air-pressure build-up on the ear drum. High-Quality Accessories:- FiiO JD7 comes with a bunch of high-quality accessories. This includes high-quality monocrystalline silver-plated copper MMCX cable, new HS18 ear tips, black memory foam ear tips, and a premium HB1 carry case.