Features 10mm & 7.8mm, Dual Dynamic Drivers

The Truthear ZERO: RED has a 🔈 dual dynamic driver configuration, a mature internal magnetic circuit structure, and a flexible polyurethane suspension composite LCP liquid crystal dome diaphragm. Its internal structure is entirely distinct from that of ZERO, allowing RED to provide better objective indicators while still meeting R&D requirements. It adopts a dual polyurethane suspension composite liquid-crystal dome diaphragm N52 Rubidium magnet double-cavity internal magnetic circuit dynamic driver.

Ultra-Fine CCAW Voice Coil For Improved Bass Response

The 7.8mm dynamic driver responsible for mids and treble uses a specially adjusted ultra-fine CCAW voice coil, which keeps the vibration system lightweight and ensures the resonance frequency is closer to the target curve and a smoother response. This new system combines the same concept of frequency division with a completely different dynamic driver. The 10mm dynamic driver, which is in charge of the bass, precisely modifies the voice coil count to meet the requirements of the new frequency division circuit. At the same time, the diaphragm structure is modified, which significantly improves objective measurements like nonlinear distortion and results in better bass response.

Accurate Hybrid Double Frequency Division

A hybrid double-frequency division utilises high-precision DLP-3D printing technology. The acoustic nozzle structure has filtering capabilities and an accurately calculated RC frequency division. This technology allows the two dynamic drivers to operate separately and brings the design goal of objective indicators closer to realisation. Another objective factor of multi-driver earphones is the phase. The full-frequency phase of ZERO: RED is highly consistent, and no convergence issue occurs in multi-driver earphones, eliminating the unnatural listening experience caused by phase distortion.

Offers Optimised Nonlinear Distortion

The Truthear ZERO: RED has excellent objective indicators. Truthear provided the R&D target for ZERO: RED based on the original excellent objective index of ZERO. The nonlinear distortion of ZERO: RED is further optimised at higher sound pressure levels (>94dB), and its frequency response target curve has bass amplitude response characteristics similar to the preference curve. In contrast, the target curve of Crinacle IEF_Neutral is used in the frequency band above 1000Hz. In comparison to ZERO, ZERO: RED is relatively less dynamic but still adheres to the characteristics of HRTF, making ZERO: RED very suitable for extended listening without becoming tiresome. These characteristics provide the punchiest bass without affecting the sound of higher-frequency bands. Sonically, the treble of ZERO: RED is highly resolving, dispatching a warm, natural and pleasing performance.

New Generation DLP 3D Printing Technology & Medical-Grade Resin

HeyGears' DLP 3D printing cavity, combined with its medical-grade high-transparency resin and internal colouring process, guarantees printing accuracy and efficiency. It realises the delicate acoustic nozzle structure that is challenging through conventional engineering. The cavity is also lightweight and made of skin-friendly and reliable materials.

Elegant Glue Dropping Capping Design

Truthear has incorporated optimised processing technology that pursues excellent objective measurements. It also attaches great importance to the optimisation and improvement of processing technology. The cavity of ZERO: RED is still a sandwich-like structure front cavity, decorative panel, and a few drops of glue to fill the seams. It directly realises the natural smooth radian using 3D printing technology, supplemented by a few drops of glue on the seams. It combines hand-made polishing and automatic gloss painting, offering an exquisite faceplate and ensuring a durable and reliable structure.