SPA-Hi End Series – Exceptional Hi-Fi Sound with Premium Craftsmanship

Experience music like never before with the SPA-Hi End Series, a premium lineup of high-performance in-ear monitors engineered for audiophiles and passionate music lovers. Combining cutting-edge acoustic technology, luxury-grade materials, and precision tuning, the SPA series delivers immersive sound with incredible detail, powerful bass, and crystal-clear vocals.

Available in four premium models — SPA-Hi End, SPA-Hi End Ultra, SPA-Hi End MAX, and SPA Limited Edition — each earphone is designed to provide a unique listening experience with superior comfort, durability, and compatibility across all music genres.

(ง’̀-‘́)ง Whether you enjoy deep bass, balanced mids, or sparkling highs, the SPA-Hi End Series is crafted to elevate every note.

Advanced Dual Magnetic Tesla Coil Technology

The SPA-Hi End Series features an innovative dual magnetic Tesla coil structure paired with a powerful N52 high-flux magnet exceeding 10,000GS magnetic flux.

This advanced driver system delivers:

• Enhanced dynamic performance
• Greater analytical precision
• Faster audio response
• Richer sound layering
• Fuller and more immersive listening

The powerful magnetic circuit creates strong driving force for highly detailed and emotionally engaging sound reproduction.

Titanium Gold Ball Top Driver for Superior Clarity

At the core of the SPA series is an advanced 11.4mm Titanium Gold Ball Top composite diaphragm combined with a double-sided silicon crystal suspension edge.

Premium Driver Benefits

✔ Ultra-low distortion performance
✔ Smooth and natural frequency response
✔ Exceptional detail retrieval
✔ Fast transient response
✔ Rich layered audio presentation
✔ Improved vocal clarity and instrument separation

The titanium diaphragm features a vibration expansion modulus of 105–110 GPa, enabling rapid response to audio signals while maintaining stable and precise sound performance.

¯_(ツ)_/¯ Ordinary earphones simply cannot reproduce this level of detail and control.

Precision Acoustic Engineering

The SPA-Pro acoustic system is developed through hundreds of directional simulation experiments to optimize resonance and improve musical expression.

Designed with a flagship audio-grade target frequency response curve, the SPA series delivers:

• Warm and immersive sound
• Expansive soundstage
• Accurate imaging
• Deep and controlled bass
• Smooth mids and airy treble

Ultra-Wide Frequency Response

5Hz – 40,000Hz

Perfect for:

• Hi-Res Audio
• Lossless Streaming
• Gaming
• Movies
• Studio Monitoring
• Everyday Premium Listening

Superior Technical Audio Performance

The SPA-Hi End Series is engineered for clean, transparent, and highly accurate sound reproduction.

Technical Highlights

• Total Harmonic Distortion (THD): < 0.5%
• Sensitivity: >109dB/mW
• Intermodulation Distortion: < 0.05%
• Transient Response Time: < 3ms
• Low-Frequency Rebound: ≈ 40ms
• Signal Attenuation: < 0.5dB

These specifications ensure exceptional clarity, fast rhythm response, and a pure natural tone across every listening session.

Premium Design & Luxury Build Quality

The SPA-Pro Hi-End Series combines elegant aesthetics with ergonomic comfort and durable construction.

SPA-Pro Hi-End

• 3D resin printed shell
• Precision matte silver coating

SPA-Pro Hi-End Ultra

• Zinc alloy mirror silver electroplating
• Precision CNC post-treatment

SPA-Pro Hi-End MAX

• Aviation-grade aluminum alloy housing
• Five-axis CNC machining
• Mirror silver electroplated finish

Advanced Shell Surface Technology

• 7075 ultra-strong alloy construction
• Diamond-cut surface finish
• Crystal resin coating
• Sculpted ergonomic contours for comfortable wear

The integrated SR Blue Label clearly marks the left earphone for easy identification and usability.

High-Definition Coaxial Bundled Audio Cable

Included with the SPA series is a premium 0.78mm dual-pin LiTZ coaxial bundled cable crafted from oxygen-free copper and silver-plated mixed weave materials.

Cable Features

✔ Soft and flexible texture
✔ Tangle-free design
✔ Strong anti-interference shielding
✔ Reduced high-frequency signal loss
✔ Stable HD audio transmission
✔ Enhanced detail and clarity

The cable supports up to 408 branch line cores for improved conductivity and durability.

(ಠ_ಠ) Cheap cables lose signal quality — the SPA cable is designed to preserve every detail.

Technical Specifications

SPA Hi End

• Driver: 11.4mm Titanium Gold Ball Top + Silicon Edge Double-Sided Composite Diaphragm
• Magnetic Structure: Double Magnetic Circuit
• Sensitivity: 111dB
• Impedance: 23Ω
• Frequency Response: 5Hz–40,000Hz
• Cable: 0.78mm dual-pin LiTZ coaxial bundle cable

SPA Hi End Ultra

• Driver: 11.4mm Titanium Gold Ball Top + Silicon Crystal Edge Composite Diaphragm
• Magnetic Structure: Double Magnetic Circuit
• Sensitivity: 110dB
• Impedance: 26Ω
• Frequency Response: 5Hz–40,000Hz
• Cable: Oxygen-free copper & silver-plated mixed weave cable

SPA Hi End MAX

• Driver: 11.4mm Titanium Gold Ball Top + Silicon Crystal Edge Composite Diaphragm
• Magnetic Structure: Double Magnetic Circuit
• Sensitivity: 109dB
• Impedance: 30Ω
• Frequency Response: 5Hz–40,000Hz
• Cable: LiTZ coaxial bundled cable

SPA Limited Edition

• Premium tuned composite diaphragm driver
• Enhanced detail density and warmth
• Superior durability and refined tuning
• Sensitivity: 111dB

Inside the Box

• 1 × EarAcoustic Audio SPA-Hi End Series Earphones
• 1 × User Manual

Why Audiophiles Love the SPA-Hi End Series

✔ Rich and immersive sound signature
✔ Deep bass with excellent control
✔ Crystal-clear vocals and treble
✔ Spacious soundstage and imaging
✔ Premium luxury craftsmanship
✔ Comfortable ergonomic fit
✔ Durable high-quality materials
✔ Easy to drive with smartphones, DACs, and audio players

Upgrade to True High-Fidelity Audio

The SPA-Hi End Series delivers the perfect combination of advanced acoustic engineering, luxurious comfort, and flagship-level sound quality. From powerful bass impact to precise detail retrieval, every component is crafted to provide a premium listening experience without compromise.

(•̀ᴗ•́)و Elevate your music, gaming, and entertainment with the SPA-Hi End Series today.