Moondrop Harmon | Dynamic Universal IEMs

Harmon Explores a New Approach to IEM Crossover Design, Diverging From the Moondrop's Established Style Triple 10mm Dynamic Driver IEM Coaxial Four-Cavity Frequency Crossover Dynamic and impactful sound Independent acoustic cavities for precise tuning Features ultra-thin glass dome diaphragm for clear treble   The XTM Series Moondrop's XTM series introduces a pioneering approach to IEM crossover design. Breaking away from traditional styles, it opens a new path with bold experimentation and precision tuning. At the heart of this series lies the Harmon, a compact IEM with three full-size 10mm dynamic drivers and a patented coaxial four-cavity structure. Mid-Treble Dynamic Driver The driver employs a glass-dome composite flexible-suspension diaphragm, created using a specialized glass molding process. This diaphragm exhibits significantly higher rigidity and improved damping characteristics compared to metal diaphragms. As a result, it delivers a crystal-clear sound with exceptional treble extension and rich high-frequency detail. The new compact internal and external composite magnetic circuit unit uses two N52 neodymium magnets and three magnetic conductors. It is equipped with a OFC lightweight voice coil to form a high-efficiency, low-distortion transducer system, taking advantage of the new diaphragm. Dual 10mm Bass Dynamic Drivers The bass is produced by dual 10mm dynamic drivers, following the classic horizontally-opposed double dynamic driver alignment. This design improves magnetic circuit efficiency, enhances dynamic range, and reduces nonlinear distortion. Each driver includes a N52 internal magnetic circuit, a CCAW lightweight voice coil, and flexible paper-composite diaphragms. This ensures deep, punch and low-distortion bass. TO-Level Acoustic Simulation and Design Backed by advanced FEA acoustic modeling and a team of senior engineers, the Harmon delivers accurate frequency response and impressive phase consistency. The tuning closely follows Moondrop’s VDSF Target Response, enhanced further by subjective fine-tuning for a natural, engaging sound with excellent imaging. 3D Printing Collaboration To realize its intricate internal structure, Moondrop partnered with HeyGears, a leader in high-precision DLP 3D printing. This ensures manufacturing consistency for the Harmon’s complex shell while enabling mass production without sacrificing accuracy. Specifications Driver: (2x) 10mm Paper Cone DD + (1x) 10mm Glass Dome Mid-Treble DD Impedance: 19Ω ±15% @ 1kHz Frequency Response: 10Hz–60kHz Effective Frequency Response: 20Hz–20kHz (–3dB, IEC60318-4) Sensitivity: 114dB/Vrms @ 1kHz THD: ≤0.1% @ 1kHz, 94dB Termination: SE 3.5mm + BAL 4.4mm Connector: 0.78 2-pin In the Box Moondrop Harmon IEMs Detachable IEM Cable Carrying Pouch Ear tips (S/M/L) User Manual Certificate Warranty Card