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.