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SIVGA Robin SV021 - Closed Back Dynamic Headphones - Refurbished, Brown

  • Sculpted rosewood ear cups with piano-gloss finish for resonance control
  • Leather headband with 3D-embroidered tension control & metal sliders
  • Replaceable ultra-soft memory-foam earpads for all-day comfort
  • 50mm polycarbonate–fiber diaphragm for detailed, dynamic sound
  • 3mm Nd-Fe-B magnet & copper-clad aluminium coil for power & clarity
  • Detachable silver-plated OFC Litz-weave cable with PVC jacket
  • Tool-free 3.5mm/4.4mm plugs for universal compatibility
  • Refurbished item warranty: 12 months
Color
Black
Brown
  • SIVGA Robin SV021 - Brown - Refurbished

    Our refurbished products are in excellent or nearly-new condition, typically returned within our 30-day return period. Lightly used once or twice, they are expertly tested, cleaned, and fully functional. Each purchase includes original accessories (or equivalent alternatives), though original packaging is not always guaranteed.

    The Robin SV021 pairs natural high-density rosewood earcups with precision five-axis CNC carving, multi-stage grinding, polishing, painting and piano-gloss finishing. A high-protein leather headband with computerized 3D embroidery and durable metal fittings adds a luxurious touch, while detachable ultra-soft memory-foam earpads wrapped in fine leather ensure a comfortable, skin-friendly seal and easy replacement over time.

    At its core sits a custom Φ50 mm dynamic driver featuring a polycarbonate-and-fiber diaphragm developed in-house for exceptional elasticity, detail and natural tonality. A 3 mm-thick Nd-Fe-B magnet provides powerful magnetic flux, while a copper-clad aluminium voice coil delivers high sensitivity, transparency and dynamic performance with minimal distortion.

    Designed for everyday and audiophile use, the Robin SV021’s 32 Ω impedance makes it effortless to drive from smartphones, computers and professional audio players. The closed-back design delivers balanced three-way tonality, wide soundstage and clean separation. A changeable cable system accommodates 3.5 mm or 4.4 mm plugs, letting you upgrade or swap cables tool-free to match any listening setup.

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    Sculpted Rosewood Ear Cups
    Each earcup is precision-machined from high-density rosewood using five-axis CNC carving, then polished through multi-stage grinding, painting, and piano-gloss finishing. This process harnesses the wood’s natural damping properties to lock out unwanted resonance and impart midrange warmth, with each pair displaying a unique grain pattern.

    Premium Leather Headband
    Wrapped in high-protein leather and stitched with computerised 3D embroidery, the headband delivers uniform tension and lasting durability. Smooth metal sliders enable tool-free sizing adjustments, ensuring balanced weight distribution and a luxurious feel during extended listening.

    Replaceable Memory-Foam Earpads
    Ultra-soft memory-foam pads conform to your ear’s anatomy for a secure, pressure-relieving seal that minimizes fatigue. The earpads detach effortlessly for hygienic replacement or material swaps, preserving acoustic integrity over years of use.

    In-House Polycarbonate–Fiber Diaphragm
    At the core of the 50 mm driver lies a custom diaphragm crafted from polycarbonate and fiber. Its ultra-thin, lightweight profile accelerates transient response and delivers razor-sharp detail, faithfully reproducing complex musical textures across the soundstage.

    High-Performance Magnet & Voice Coil
    The 3mm magnet of teh driver generates a powerful, uniform field, while the copper-clad aluminium voice coil balances low mass with excellent conductivity. This synergy boosts sensitivity, expands dynamic range, and controls distortion even at higher volumes.

    Tool-Free Interchangeable Cable System
    The detachable cable pairs silver-plated, oxygen-free copper conductors in a flexible Litz weave with satin-finish PVC insulation for tangle resistance. Quick-release 3.5 mm and 4.4 mm connectors click on without tools, letting you upgrade or swap cables seamlessly.

    Features

    • Sculpted rosewood ear cups with piano-gloss finish for resonance control
    • Leather headband with 3D-embroidered tension control & metal sliders
    • Replaceable ultra-soft memory-foam earpads for all-day comfort
    • 50mm polycarbonate–fiber diaphragm for detailed, dynamic sound
    • 3mm Nd-Fe-B magnet & copper-clad aluminium coil for power & clarity
    • Detachable silver-plated OFC Litz-weave cable with PVC jacket
    • Tool-free 3.5mm/4.4mm plugs for universal compatibility

    Package Includes

    • SIVGA Robin SV021 Headphones in Brown
    • Detachable audio cable
    • Hemp carrying bag
    • 3.5mm to 6.35mm adapter

    Technical Specifications

    • Style: Over-ear, closed-back
    • Driver type: Dynamic
    • Driver diameter: 50 mm
    • Frequency response: 20 Hz–20 kHz
    • Sensitivity: 105 dB ± 3 dB
    • Impedance: 32 Ω ± 15%
    • Cable length: 1.6 m ± 0.2 m
    • Connector: 3.5 mm jack
    • Weight: 275 g

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