Key Features：

1. Clear & Mellow Vocal Performance – Sound to Recall Our Memory – Vocal of Qinglong is clear, cohesive, and neutral with blurred edge tones. Solid and powerful vocals always take up half of the sound in our memory – designed to deliver nostalgic, emotionally resonant vocal reproduction.

2. 10mm PU+PEEK Double-Layer Composite Diaphragm – After testing multiple driver units (LCP, DLC, Beryllium plated, Carbon PET, Alloy diaphragm, etc.), the PU+PEEK composite was chosen for its balanced, natural, and reminiscent sound. Delivers the perfect combination of clarity, warmth, and musicality.

3. Ultra-High Tension DAIKOKU Copper Voice Coil + N52 NdFeB Strong Magnet – Voice coil applies DAIKOKU copper wire with ultra-high tension combined with N52 NdFeB strong magnet. Reproduces more power, more dynamics, and stronger sound under the same conditions – an exceptional power source for the diaphragm.

4. Aviation-Grade 7-Series Aluminum Alloy – 5-Axis CNC Engraving – Shell made from aviation-grade 7-series aluminum alloy with precision five-axis CNC process. Front cavity, nozzle, and sound-absorbing structure in rear cavity are meticulously engraved for optimal acoustic performance.

5. Chrome-Electroplated Mirror Finish + Laser Engraving – Cavity adopts electroplating mirror process for excellent texture and smooth touch. Faceplate uses laser engraving with satin finish – durable, scratch-resistant, and abrasion-resistant. Premium aesthetics that last.

6. Ergonomic Design with Passivation Treatment – Exterior part has undergone extensive passivation treatment to reduce discomfort caused by irregular shapes to different users. Ergonomic design offers comfortable, non-fatiguing wearing even for long listening sessions.

7. 0.78mm Interchangeable 2-Pin Cable Design – Armed with 0.78mm female socket for wide compatibility with cable interfaces of different brands. Sets no limit for earphone upgrades – easily customize your sound with aftermarket cables.

8. 5N Oxygen-Free Copper Silver-Plated Cable – 4-core 5N OFC plated with silver with metal hardware using aluminum alloy oxidation process. Aluminum alloy metal hardware provides durability and premium feel. Delivers excellent signal transmission with enhanced clarity and detail.

9. 3.5mm Gold-Plated Straight Jack – Corrosion-resistant gold-plated connector ensures stable, lossless audio transmission and long-lasting durability for reliable performance.

10. Wide Frequency Response – 20Hz–40kHz frequency range captures every detail from deep, textured bass to airy, extended highs. A versatile sound signature suitable for all music genres.

11. Easy-to-Drive Performance – Low impedance (32Ω) and high sensitivity (108dB @1kHz) make these IEMs compatible with smartphones and portable players without requiring an external amplifier.

12. Exquisite Silver Finish – Premium silver color with mirror-like electroplated finish. A stunning visual design that complements its exceptional audio quality.

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