May 30, 2025 at 5:15 PM Thread Starter Post #1 of 1
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Hi all,

We’re excited to share a brand-new launch from Moondrop — The Moondrop Harmon Hybrid Dynamic Driver IEMs (In-Ear Monitors) are built around a trio of full-sized 10mm drivers—two for bass, one for mid-treble—each housed in its own acoustically tuned chamber.

The secret sauce is a patented four-cavity acoustic crossover system that lets the drivers blend naturally—no harsh handoffs, no smearing.

Product highlights 
  • Triple 10mm dynamic drivers in coaxial formation
  • Glass-dome mid-treble driver with composite magnetic circuit
  • Dual horizontally-opposed bass drivers with N52 magnets
  • Four-cavity coaxial acoustic crossover system
  • VDSF target tuning with real-ear refinement
  • THD ≤ 0.1% at 94dB SPL
  • High phase consistency across full frequency band
  • B&K 5128C HATS tuned and measured
  • Precision DLP 3D printed shells from HeyGears
  • 3.5mm and 4.4mm plugs included with braided cable

Specs
  • Model: Harmon In-Ear Monitors (Coaxial Four-Cavity Frequency Crossover / Three Dynamic Drivers)
  • Driver configuration:
    • 1x 10mm Glass Dome Composite Diaphragm Mid-Treble Driver
    • 2x 10mm Paper Cone Composite Diaphragm Bass Drivers (H.O.D.D.D.U.S.)
  • Impedance: 19Ω ±15% (@1kHz)
  • Sensitivity: 114dB/Vrms (@1kHz)
  • Frequency response: 10Hz–60kHz
  • Effective frequency range: 20Hz–20kHz (IEC60318-4, -3dB)
  • THD: ≤0.1% (@1kHz, 94dB)
  • Connectors: 0.78mm recessed 2-pin
  • Cable plugs: 3.5mm single-ended and 4.4mm balanced
Moondrop Harmon IEMs.jpg
 
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