qdc BASALT

Introduction
Azure Dragon, White Tiger, Vermilion Bird, Black Tortoise—the Four Celestial Guardians of heaven. The White Tiger has arrived, and the Black Tortoise is coming
soon.

This premium single dynamic driver in-ear monitor, a flagship single-driver model, is co-developed by qdc and Japan’s Aiuto. It is equipped with a 13mm pure diamond diaphragm, titanium housing, and undergoes top-tier acoustic tuning.

Technical Highlights
Equipped with an exclusively customized 13mm pure diamond diaphragm driver from qdc, featuring an ultra-thin planar structure.

It adopts qdc’s renowned patented acoustic tuning technology. The shell utilizes a brand-new acoustic architecture and internal cavity design, delivering extended frequency response and elevated sensitivity.

The earphone delivers a vast soundstage, rich and robust low frequencies, clean and crisp treble, ultra-low distortion across the full frequency spectrum, balanced three-frequency performance and high drivability, reproducing authentic sound and outstanding dynamics with impeccable precision.

Patent Numbers Involved: ZL202321643009.5 ZL201920416141X

Features of qdc Diamond Diaphragm Drivers
A diamond diaphragm driver refers to a loudspeaker that uses high-purity polycrystalline diamond film grown via Chemical Vapor Deposition (CVD) process as its diaphragm, especially for treble units. Hailed as the "ultimate material" for high-end acoustics, its unique characteristics and advantages stem from the extreme physical properties inherent to diamond itself.

The CVD diamond diaphragm leverages cutting-edge material science to deliver diaphragm performance close to theoretical perfection:
Ultimate Hi-Fi Fidelity: It reproduces sound with near-zero distortion across the entire human audible frequency range, faithfully restoring every subtle detail in recordings.

Unmatched Treble Performance: Treble extension effortlessly exceeds 40kHz, presenting a smooth, luminous listening experience free from the harsh metallic tint typical of conventional metal treble diaphragms.

Microscopic Detail Retrieval: Its ultra-fast transient response captures the faintest
musical signals, acting as an audio "microscope".

Lightning-quick transient response: The ultra-low mass paired with ultra-high rigidity enables the diaphragm to start and stop moving instantly. It accurately reproduces delicate musical nuances, such as string bow friction and vocal breath sounds.

Outstanding Stability and Durability: Excellent thermal management plus superior physical and chemical stability, suitable for all harsh usage scenarios.

Extra-long service life and outstanding stability: The material barely suffers from vibration fatigue or aging, maintaining consistent performance for tens of thousands of hours, while delivering excellent corrosion and oxidation resistance.

Crisp, lag-free sonic performance: The diaphragm ceases vibration instantly with minimal residual resonance, yielding sharp, uncluttered sound and exceptional resolution. It is acclaimed for delivering extraordinarily clean audio.

Technical Specifications
Input Sensitivity: 102dB SPL/mW
Frequency Response: 5Hz – 50000Hz
Impedance: 19Ω
Driver Unit: 1 Dynamic Driver (1DD)
Noise Isolation: 26dB
Earphone Plug: 2-in-1 interchangeable plug
Earphone Cable: Black
Shell Color: Optionals
Technical Feature: Full-range diamond diaphragm
Classified: Standard Series
Recommended Use: Audio monitoring & music enthusiasts