FiiO Snowsky OAK NANO Silver In-Ear Monitor Earphones

️ Please Note

• Measurement data (magnetic flux density, distortion) is sourced from FIIO Labs internal testing.

FiiO Snowsky OAK NANO Silver In-Ear Monitor

Overview

The Snowsky OAK NANO is the debut flagship in-ear monitor from FiiO's Snowsky sub-brand, two years in development, carrying forward the acoustic legacy of the discontinued FD7. It pairs a 13.8 mm (0.54 in) beryllium alloy dome dynamic driver with a pure titanium housing crafted through mirror polishing, CNC machining, and PVD coating, delivering deep, powerful bass alongside clear, expansive sound.

⭐ Key Features

• Beryllium Alloy Dome Driver: Low-loss, high-response diaphragm for extended highs, fast transient response, and minimal distortion — capturing fine details in percussion and vocal sibilance
• 1.5 T High-Flux Magnetic Circuit: 13.8 mm (0.54 in) external-magnet driver with magnet volume increased by 69.5% vs. FD7, achieving 0.1% THD at 114 dB SPL
• W-Shaped Independent Surround: Beryllium-coated independent edge expands effective diaphragm area by 30%, enhancing density and tonal richness
• Pure Copper Voice Coil: Delivers warmer, more nuanced tonality with reduced listening fatigue compared to copper-clad aluminum alternatives
• ️ Acoustic Prism Front Chamber: Inherited from the FD7, this filter automatically corrects phase shifts caused by propagation path differences, reducing standing waves and improving sound diffusion
• Three Interchangeable Plugs: Straight rotating-lock plugs in 3.5 mm, 4.4 mm, and USB Type-C (with BES3001-SP DSP chip, 32-bit/384 kHz PCM, 8-band precision PEQ)
• Hi-Res Audio Certified: Officially certified by the Japan Audio Society (JAS) and CEA

Specifications

• Driver: Single dynamic, beryllium alloy dome, external magnet
• Driver Size: 13.8 mm (0.54 in)
• Frequency Response: 10 Hz – 40 kHz
• Impedance: 50 Ω (@1 kHz)
• Sensitivity: 112 dB/mW (@1 kHz)
• THD: 0.1% (@114 dB SPL)
• Magnetic Flux Density: Approx. 1.5 T
• Cable Connector: 0.78 mm 2-pin detachable
• Cable: 6N OCC silver-plated, cryo-treated, approx. 1.2 m (3.9 ft)
• ️ Weight: Approx. 8.9 g (0.31 oz) per side, cable excluded
• Housing: Pure titanium (mirror-polished, CNC, PVD-coated)

What's in the Box

• Snowsky OAK NANO earphones (1 pair)
• NEST CUBE storage case
• Interchangeable plug cable
• 3.5 mm interchangeable plug
• 4.4 mm interchangeable plug (pre-installed at shipping)
• USB Type-C interchangeable plug
• Interchangeable nozzles × 2 pairs (Red / Black; Black pre-installed)
• Magnetic cable clip
• Cleaning brush
• Ear tips × 22 pairs total: Foam M×2, Bass S/M/L×3, SpinFit S/M/L×3 (M pre-installed), Vocal S/M/L×3, Double Flange M×2, Balanced S/M/L×3, HS18 S/M/L×3, HS20 Liquid Silicone S/M/L×3