Rose Technics Quiet Sea II In-Ear Headphones | 3.5mm & 4.4mm

• Newly Upgraded Dynamic Driver: 10 mm dual-magnet, dual-chamber dynamic driver featuring a multi-layer PEEK base and a copper-carbon alloy vacuum-coated diaphragm.
• ORBITA Acoustic Architecture: Innovative acoustic design delivers outstanding transduction efficiency—achieving excellent sound quality without requiring high-end amplification.
• Precision CNC-Machined Housing: Five-axis CNC aluminum-alloy shell paired with a transparent polycarbonate mid-cavity showcases refined craftsmanship.
• “Jasmine” Upgrade Cable: 5N oxygen-free copper, 4-strand braided cable with a modular termination system; both 3.5 mm and 4.4 mm plugs included.
• Ergonomic Design: Engineered from extensive 3D ear-canal data for a comfortable and secure fit.
• Liquid Silicone Eartips: High-quality liquid-silicone tips enhance comfort and seal.
• Professional Tuning: Voiced by veteran acoustic engineers; suitable for rock, jazz, R&B, rap, K-POP, and more.

Revolutionary Dynamic-Driver Technology

The ROSE Technics QuietSea II adopts a newly developed 10 mm dual-magnet, dual-chamber dynamic driver—a major upgrade over the first generation. The driver employs an innovative dual-material composite diaphragm that combines a multi-layer PEEK substrate with a copper-carbon alloy vacuum-coated dome. The dome’s ultra-light mass and excellent rigidity enable ultra-fast transient response that captures every musical detail. A silver-plated aluminum surround delivers powerful low-frequency performance and very low-latency transients; its stiffness effectively suppresses breakup-induced distortion for a pristinely clean presentation.

ORBITA Acoustic Architecture Breakthrough

QuietSea II features ROSE Technics’ exclusive ORBITA acoustic architecture. This design integrates the copper-carbon alloy dome diaphragm, silver-plated aluminum surround suspension, a high-performance imported black voice-coil, a high-precision dual-material cavity, and a high-flux dual-magnet system. The advanced configuration ensures excellent driving efficiency so you can enjoy top-tier sound quality without an additional high-end DAC or amplifier. ORBITA markedly improves operating efficiency, matching seamlessly with a wide range of sources for an easy-to-drive listening experience.

Meticulous Craftsmanship & Design

The QuietSea II’s housing reflects ROSE Technics’ commitment to build quality. A five-axis CNC-machined aluminum-alloy shell pairs with a transparent polycarbonate mid-cavity for optimal airflow control and driver consistency, while the window reveals the precise inner structure. This dual-material approach is visually striking and acoustically purposeful, reducing distortion across the signal chain to preserve purity and accuracy.

Ergonomic Comfort

Based on extensive real-world 3D ear-canal data, QuietSea II achieves optimal ergonomic curves for a seamless, secure fit. Each earpiece weighs just 4.9 g, remaining comfortable even during long sessions. The included high-quality liquid-silicone eartips further improve comfort and isolation, keeping you immersed without outside distractions.

“Jasmine” Upgrade Cable

QuietSea II comes with ROSE Technics’ next-generation “Jasmine” upgrade cable: four-strand 5N oxygen-free copper conductors with enhanced internal quality. Its modular termination system includes standard 2-pin connectors and a 4-pin interchangeable plug module. Both 3.5 mm single-ended and 4.4 mm balanced plugs are in the box, so you can plug and play with different sources right away. Valued around the US$150 tier, this cable maximizes versatility and playability at a superb value.

Professional Tuning & Sound

Tuned by experienced acoustic engineers, QuietSea II builds on the first generation’s praised clean response with greater dynamics, extended bandwidth, richer timbral layers, and improved resolution and clarity. Vocals are especially captivating with an engaging tone and proper definition. Bass is warm and authoritative, mids avoid excessive recession, and highs are handled safely for fatigue-free, long-term listening. This tonality suits rap and hip-hop particularly well while also excelling with rock, jazz, R&B, K-POP, and mainstream pop.

Excellent Soundstage & Separation

QuietSea II achieves a well-balanced tri-axial soundstage without overemphasizing any dimension. While not excessively wide, it offers good depth layering and moderate height for a front-focused, semi-hemispherical presentation. Height cues add a subtle, airy three-dimensionality without a “over-the-head” sensation. Lateral imaging approaches a near-180° stereo presence, maintaining a natural, comfortable distance from the head.

Technical Specifications

In the Box

• ROSE Technics QuietSea II earphones × 1 pair
• “Jasmine” upgrade cable (5N OFC, 4-strand braided) × 1
• 3.5 mm single-ended plug × 1
• 4.4 mm balanced plug × 1
• High-quality liquid-silicone eartips (multiple sizes)
• Carrying bag × 1