Experience a masterclass in acoustic harmony with the Harmonic Empire (HE) Guo Jia Dual Dynamic Driver IEMs. Inspired by the strategic foresight of ancient history, these in-ear monitors combine a self-developed solid wood sliced diaphragm with a precision PET driver to deliver a deeply engaging, warm, and natural sound signature.
Built with a 3D-printed resin cavity and a 5-axis aviation-grade aluminum alloy faceplate, the Guo Jia IEMs blend high-end craftsmanship with effortless driveability for smartphones, DACs, and digital audio players alike.
Dual 10mm Dynamic Driver Architecture & Wood Diaphragm Innovation
The Harmonic Empire Guo Jia In-Ear Monitor represents a breakthrough in hybrid acoustic engineering, utilizing a dual 10mm frequency-divided dynamic driver configuration. Unlike conventional single-driver or all-synthetic setups, this earphone implements a differentiated dual-diaphragm crossover plan. The low-frequency spectrum is handled by a self-developed pure solid wood sliced diaphragm, bringing organic overtones, deep bass extension, and lush three-dimensional impact.
Complementing the lower end, the high-frequency duties are managed by a precision PET diaphragm that ensures clean, controlled, and sibilance-free upper registers. Together, these drivers harmonize to create a deeply engaging, warm, and natural musical presentation.
Strategic Tuning Philosophy & Sound Profile
Inspired by the calculated vision of its namesake strategist, the tuning of the Guo Jia IEM focuses on emotional resonance, vocal presence, and fatigue-free listening. The high frequencies are deliberately smoothed to eliminate sharp peaks and harshness, allowing for hours of immersive music consumption without listener fatigue. The mid-range takes center stage, pushing male and female vocals forward with a solid, chesty body and clear spatial separation from background instrumentation. Reinforced by the natural acoustic properties of the solid wood woofer, the overall sound signature delivers a full-bodied, organic ambiance that excels in pop, acoustic tracks, and bass-focused genres.
Hybrid Resin-Metal Housing & High-Sensitivity Design
Crafted for both durability and ergonomic comfort, the housing features a dual-material construction pairing a 5-axis CNC-milled aviation-grade aluminum alloy faceplate with an eco-friendly 3D-printed resin base. The aluminum faceplate effectively suppresses unwanted internal acoustic resonances to solidify the soundstage, while the resin body optimizes airflow and sits lightly in the concha for long listening sessions.
Featuring an ultra-high sensitivity of 114dB and an impedance of 20Ω, the Guo Jia earphone is exceptionally easy to drive, unlocking its full dynamic range straight from standard smartphones, laptops, or USB dongles without requiring external amplification.
Detachable OFC Cable & Premium Package
Built with everyday utility and longevity in mind, the earphone incorporates a universal 0.78mm 2-pin detachable interface. This allows listeners to easily swap between standard cables, high-purity balanced upgrade wires, or wireless Bluetooth adapters. Included in the package is a high-grade 4-core Oxygen-Free Copper (OFC) braided cable, featuring 30 ultra-fine 0.05mm strands per core for low-loss signal transmission and transparent sound transfer. Every set comes complete with the IEM units, the 4-core cable, a protective carrying case, two custom sets of sonic eartips, and a collectible character laser card.
Frequently Asked Questions (Q&A)
Q: Do I need a powerful headphone amplifier to run the Harmonic Empire Guo Jia IEMs?
A: No. With a low $20\Omega$ impedance and high $114\text{ dB}$ sensitivity, these earphones reach full dynamic power directly from smartphones, laptops, or basic USB-C dongles.
Q: How does the solid wood sliced diaphragm improve low-frequency sound quality?
A: Wood provides natural internal damping properties that synthetic films struggle to match. The solid wood sliced diaphragm reproduces organic overtones, deep low-end extension, and a textured, warm bass response without introducing mud or bloat.
Q: Can I replace the cable or convert these earphones into a wireless setup?
A: Yes. The universal 0.78mm 2-pin connector system allows you to easily switch out the stock cable for custom silver/copper cables or attach 2-pin Bluetooth ear-hooks for wireless listening.
Technical Specifications
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Driver Configuration: 10mm Solid Wood Sliced Dynamic Driver (Low) + 10mm PET Dynamic Driver (High)
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Frequency Response: $20\text{Hz} - 20\text{kHz}$
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Sensitivity: $114\text{ dB} \pm 3\text{dB} @ 1\text{kHz}$
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Impedance: $20\Omega \pm 15\% @ 1\text{kHz}$
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Total Harmonic Distortion: $\text{THD} \le 3\% @ 100\text{Hz} - 5000\text{Hz}$
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Shell Construction: 5-Axis Aviation-Grade Aluminum Alloy Faceplate + 3D-Printed Resin Cavity
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Cable Specifications: 4-Core Oxygen-Free Copper ($30 \times 0.05\text{mm}$ strands per core), $1.2\text{m}$ length
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Connector Type: 0.78mm 2-Pin Detachable Interface with 3.5mm Single-Ended Plug
