Overview

The Truthear Hexa is a hybrid IEM released in 2023, featuring a 1DD+3BA driver configuration. It combines a 10mm PU+LCP composite diaphragm dynamic driver with three balanced armature drivers, offered at USD 79.99. Reflecting the company’s measurement-driven approach, the tuning is based on the Harman target curve.

The design incorporates 3D-printed PU+LCP composite diaphragm, N52 magnet system, and phase coherence technology, achieving a warm-neutral sound signature. Measurements from sources like RTINGS confirm its excellent isolation performance and flat frequency response characteristics.

Scientific Validity

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Scientific validity based on measurement data is highly rated. Specifications of THD≤1%@1kHz (94dB), sensitivity 120dB/Vrms@1kHz, and impedance 20.5Ω±15%@1kHz are objectively good. Measurements from RTINGS show exceptionally low distortion, indicating a high level of fidelity to the source. The measurement graphs are also included in Crinacle’s database, showing good characteristics across the 20Hz-20kHz range. Phase coherence technology ensures phase alignment across all frequency bands.

Technology Level

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Technical competence is solid but lacks uniqueness. The combination of a 10mm PU+LCP composite diaphragm dynamic driver and three BA drivers is technically sound, with appropriate use of N52 magnets and dual-cavity internal magnetic circuits. The combination of 3D DLP-printed medical-grade resin shells and CNC-machined aluminum faceplates ensures quality standards. However, these technical elements are combinations of existing technologies, with no innovative breakthroughs evident.

Cost-Performance

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Cost-performance is a challenge for this product. While the Truthear Hexa (USD 79.99) boasts excellent measured performance, the very same company offers the Truthear x Crinacle Zero:RED (USD 54.99), which delivers equivalent or better frequency response and distortion performance at a lower price. Its biggest competitor is its own sibling, making the Hexa’s position difficult. The CP equation is CP = USD 54.99 ÷ USD 79.99 ≒ 0.69, resulting in a score of 0.7. While the performance is solid, a more cost-effective option exists.

Reliability & Support

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Regarding reliability, while general sound quality and fit receive positive reviews, some users have reported concerns about build quality. For instance, there are isolated issues mentioned regarding the faceplate finish and the durability of the cable connection points. Since Truthear is a relatively new company (established in 2022), the long-term support system and continuity of after-sales service are currently unknown variables.

Rationality of Design Philosophy

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Design philosophy is highly rational. Adherence to Harman target curve, measurement-based tuning, and acoustic design using phase coherence technology are all scientifically grounded. Technical approaches including 3D DLP-printed acoustic waveguide optimization, medical-grade resin use, and acoustic waveguide design with filtering functions are consistently rational. The design philosophy prioritizing objective measurement data over subjective “musicality” is also commendable.

Advice

The Truthear Hexa is a technically excellent IEM, but its cost-performance requires careful consideration before purchase. This is due to the existence of a strong alternative, the Truthear x Crinacle Zero:RED, which offers equivalent or better performance for less money.

Recommended for:

• Those who are attracted to the 1DD+3BA hybrid configuration itself.
• Those who particularly prefer the specific design and fit of the Hexa.
• Those who appreciate measurement-based sound and can accept the price difference with the Zero:RED.

Should consider alternatives:

• Those prioritizing cost-performance (the Truthear x Crinacle Zero:RED is highly recommended).
• Those who emphasize long-term product reliability and support.

While the Hexa is a very high-performing product on its own, it is difficult to recommend enthusiastically when a better value option exists within the same company’s lineup.

(2025.7.24)