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SIVGA SV021 PRO Hi-Fi Closed Back Over Ear Headphones 50mm Aluminum Diaphragm Driver Natural Wood Shell with Detachable Cable

SIVGA Robin SV021 PRO: High-fidelity dynamic wooden headphones
The SIVGA Robin SV021 PRO are a refined evolution within the brand’s dynamic headphone range, combining advanced acoustic design, carefully selected natural materials and construction focused on both sound quality and long-term comfort. Created for listeners who value a natural, balanced sound, these headphones deliver an immersive experience that is rich in detail, warm in tone and impressively precise.

At their core is a large 50 mm dynamic driver featuring a five-layer composite diaphragm, carefully engineered to strike the ideal balance between structural rigidity and internal damping. This architecture allows for controlled, coherent response across the audible spectrum, with clear mids, well-defined treble and precise retrieval of microdetail, while always maintaining a musical, natural character.

The ultra-thin aluminium and black-copper alloy voice coil significantly improves transmission efficiency and resolution. Working together with a new six-layer reinforced dome composite structure and a specially developed high-performance magnetic system, the driver achieves highly efficient energy-to-sound conversion with very low distortion, even at high listening levels.

Timeless wood, tuned for sound

The visual and acoustic identity of the SV021 PRO is shaped by carefully selected natural woods. Users can choose between beech — with a fine, uniform grain that exudes understated elegance — or bold, high-contrast zebrawood, which adds a more modern and distinctive visual character. Beyond aesthetics, the wooden cups help control internal resonances, lending the sound a warm, organic tonality without sacrificing clarity.

Comfort-focused ergonomic design

The ergonomic headband is made from high-quality metal, precisely machined to offer a refined finish and a solid, premium feel. Its curved, adjustable design ensures a stable fit and even weight distribution, reducing pressure on the head and improving overall comfort.

Large, ergonomic earpads, soft and breathable, are shaped to naturally conform to different head and ear profiles. Their supple, skin-friendly construction allows for long listening sessions without fatigue, while maintaining a good acoustic seal for better bass presence and isolation.

High-purity detachable cable

The package is completed by a detachable cable made from oxygen-free copper (OFC), ensuring clean signal transmission with low resistance and minimal distortion. The cable strikes an ideal balance between durability, flexibility and corrosion resistance, and its detachable design makes replacements or future upgrades easy.

Technical specifications
General

Style: Closed-back over-ear headphones

Ear coupling: Circumaural

Transducer type: Dynamic

Driver

Driver diameter: 50 mm

Diaphragm type: 5-layer multi-compound diaphragm

Additional structure: 6-layer reinforced dome composite

Voice coil: Ultra-thin aluminium and black copper alloy

Acoustic performance

Frequency response: 20 Hz – 20 kHz

Sensitivity: 106 dB ± 3 dB

Impedance: 45 Ω ± 15 %

Design & build

Ear cup material: Natural wood

Wood options: Beech / Zebrawood

Headband structure: Precision-machined metal

Earpads: Ergonomic, soft and breathable

Cable & connectivity

Cable type: Detachable OFC (oxygen-free copper)

Cable length: 1.6 m

Cable connectors at headphone: Dual 2.5 mm

Plug: 3.5 mm single-ended jack

Adapter included: 3.5 mm female to 6.35 mm male

Weight

Headphone weight: 289 g

Package contents

SIVGA Robin SV021 PRO headphones

Dual 2.5 mm to 3.5 mm cable

3.5 mm to 6.35 mm adapter

Hemp carry pouch