[🎶SG] EARACOUSTIC AUDIO SPA-CUSTOM TUNING VERSION - BUG AUDIO x EARACOUSTIC Co-Branded Limited Edition

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EARACOUSTIC AUDIO SPA-CUSTOM TUNING VERSION x BUG AUDIO Co-Branded Limited Edition

> Redefine The HiFi Boundary Between "Listenability" And "Authenticity"

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Descriptions:

> This Is Not Just A Co-Branding Collaboration, But A Deep Dialogue On Sound Aesthetics
> Return To The Essence Of Listening
> Development Philosophy
> Teacher Dianyinhe Proposed: "Genuine Musicality Stems from the Balance Between Listenability and Authenticity." With this as its core philosoph, the SPA - Custom Tuning Version aims to create a headphone that not only accurately reproduces musical details but also delivers as soft listening experience. It does nt deliberately stimulate your hearing, but presents the authenticity of music in a gentle manner.

> The Combination Of Art And Science

> Appearance Design
> It is made of aviation aluminum, which is precision-cut and formed by CNC. The silver custom-lik cavity features a lightweight design, which fits the auricle while providing  excellent sound insulation performance. The face cover adopts a secondary anodized gold process, and is laser-engraved with the co-branded logos of BUG Audio and EARACOUSTIC Audio. The metal luster is calm and wear-resistant, demonstrating a low-key and luxurious temperament.

> Structure Design
> Dual-Magnetic-Circuit & Dual-Cavity Structure. It reduces distortion through symmetric magnetic circuit drive; the dual-cavity acoustic design effectively regulates internal air flow, enhancing low-frequency elasticity and mid-frequency information fullness.

> Craftsmanship And Technology
> Details Achieve Excellence
> Driver Technology
> Equipped with a Combination of Titanium-coated Diaphragm Dome and Double-sided Deposited Silicone Crystal Diaphragm Surround the Titanium Dome, featuring high hardness and fast response, is reponsible for the accurate reproduction of high frequenices; the silicon crystal surround, with excellent toughness, enables the smooth transition of mid-to-low frequencies. The dual-material composite diaphragm effectively isolates vibrations and reduces breakup distortion.

> Magnetic Circuit System
> Dual-Magnetic-Circuit Tesla Dynamic Driver Unit. It provides a magnetic flux of over 1.5 Tesla, with a driving efficiency that is 170% higher than that of conventional dynamic drivers. Even on low-power devices, it can still deliver excellent dynamic performance.

> Standard Configuration: 4.4mm Balanced + 3.5mm 2-in-1 Litz Coaxial Oxygen-Free Copper (OFC) Plated With Silver & Single-Crystal Copper Plated With Silver Gold-Silver Mixed Cable Featuring a 0.78mm replaceable cable design, it further reduces transmission loss and improves signal purity.

> Sound Characteristics
> A Gentle Yet Precise Acoustic Character
> The sound style of the SPA - Custom Tuning Version is referred to by Dianyinhe as "an elegant and undrestated acoustic character." Unlike the straightforwardness of monitoring headphones or the intensity of vintage headphones, it impartes an appropriate sense of warmth and smoothness to music on the basis of accuracy.

> Low Frequencies
> It offers moderate quantity, deep extension, and full elasticity. The silicon crystal surround provdes excellent damping characteristics, resulting in fast and non-sluggish low-frequency transient response - making it ideal for reproducing drum beats and bass lines in jazz and rock genres. 

> Mid Frequencies
> Vocal positioning is well-balanced, with clear articulation and appropriate fullness. The synergy between the titanium dome and silicon crystal surround delivers rich yet unobtrusive mid-frequency details, allowing both male and female vocals to be reproduced naturally - making it particularly suited for rendering pop and folk music.

> High Frequencies
> Compared with the SPA Limited Edition, the special-tuned version has moderately dimmed the high frequencies, attenuating the sharp peaks above 6kHz. This ensures that the high-frequency details remain rich while eliminating the harsh and scratchy feeling, making it less fatiguing for long-term listening.

> Soundstage & Separation
> The soundstage is neat and well-layered, with precise instrument positioning. The dual-cavity design enhances the vertical sense of space, making it ideal for rendering classical music and live recordings.

> Frequency Response Curve Analysis & Tuning Justification
> By comparing the frequency response curves of the SPA Limited Edition and the Custom Tuning Version, Dianyinhe's tuning philosophy can be clearly discerned.

> Low-Frequency Range (20Hz - 200Hz)
> The curve extends flatly, which is basically consistent with that of the Limited Edition - ensuring the fundamental quantity and extension of low frequencies.

> Mid-Frequency Range (200Hz - 2kHz)
> The curve presents a slight elevation, enhancing the thickness of vocals and instruments - while the amplitude is controlled within 1dB to avoid over-rendering.

> High-Frequency Range (2kHz - 20kHz)
> In the 5kHz 0 8kHz range, the Custom Tuning Version exhibits an attenuation of approximatelt 2dB compared to the Limited Edition, with a further smooth transition above 10kHz. This adjustment significantly reduces the sharpness of sibilance (vocal "hissing" sounds) and metallic percussion, enahcning overall listening comfort.

> Tuning Philosophy & Product Positioning Dianyinhe states: "The resistant in high frequencies is not to weaken details, but to enable longer enjoyment of music." The SPA Custom Tuning Version achieves this goal through scientific calibration, making this co-branded model a reference-grade headphone suitable for daily companionship.

> Slogan Translation Judge By Sound, Savor The Moments
> Collaboration Significance & Product Summary. The collaboration between Lixian and Dianyinhe is not only a breakthrough in technology, but also return to the essence of music. The SPA Custom Tuning Version headphones interpret "listener-friendly high fidelity" with a gentle yet precise sound, and also represent another brilliant showcase of Lixian's acoustic technology in single dynamic drivers.

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Specifications:

> Driver Unit: 11.4mm Dual-Magnet Dual-Cavity Tesla Dynamic Driver With Titanium Dome & Double-Sided Deposited Silicon Crystal Surround
> Sensitivity: 111dB
> Impedance: 25 ohms
> Frequency Response Range: 5 - 40kHz
> Cable Specification: 4.4mm Balanced + 3.5mm 2-in-1 Litz Coaxial cable (OFC Silver-Plated + Single-Crystal Copper Silver-Plated, Gold-Silver Mixed Braided) With Gold-Plated Connectors, 0.78mm Replaceable Interface

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