TANGZU DUFU the Poet-Sage 2DD + 2BA Wired In-Ear Headphones with Replaceable 3.5mm and 4.4mm Plugs (HiFi)

As a raindrop meets the water surface, ripples expand layer by layer—inspired by this, we integrated the Eastern aesthetic philosophy of "still waters run deep" into industrial design.
The cavity models the natural free-fall posture of a droplet, capturing the exact moment right before it falls. Precision-carved from full aluminum alloy and treated with surface electroplating, it reveals a flowing mirror-like texture of light and shadow.

The diamond embedded in the shell resembles a bead of water at the center of a ripple just before dispersing. As light shifts, it refracts delicate starlight-like sparkles, injecting clear, transparent visual layers into the overall form. We hope it serves not merely as an instrument for listening, but as a personal keepsake carrying blessings—delivering tranquility and peace in everyday wear.

2 Dynamic Drivers + 2 Balanced Armatures (2DD + 2BA)

Dual Dynamic & Dual Armature, Each Performing Its Duty
The earphone is equipped with a high-rigidity all-metal acoustic cavity (inlaid with diamond embellishments and metal sound nozzles) and adopts a hybrid architecture of 2 dynamic drivers + 2 balanced armatures. At its core are 10mm and 6.7mm coaxial dual dynamic drivers that produce sound from a common point. This physical structure avoids phase differences among multiple drivers and delivers precise sound imaging. Working with independent balanced armatures as well as coordinated physical and electronic crossovers, every driver functions separately without blocking one another. Combined with precision acoustic tuning meshes, it ultimately achieves Hi-Fi-grade acoustic performance featuring solid and mellow tone, excellent resolution and extremely smooth transition across the three frequency bands.