FiiO SNOWSKY OAK NANO Single Dynamic Driver Earphones

The FiiO SNOWSKY OAK NANO is a flagship single dynamic driver earphone created to deliver powerful, detailed sound from a beautifully engineered titanium design.

As the first model in the SNOWSKY OAK Series and the spiritual successor to the FiiO FD7, the OAK NANO combines a large beryllium-alloy driver with carefully controlled acoustics, interchangeable tuning nozzles and an exceptionally versatile modular cable system. 

Large Beryllium-Alloy Dynamic Driver

At the heart of each earphone is a specially developed 13.8mm dynamic driver featuring a lightweight and rigid beryllium-alloy dome.

Its large driver surface and powerful external magnetic system provide excellent control, allowing the OAK NANO to reproduce deep bass, natural vocals and fine high-frequency detail with speed and clarity. The driver is designed to minimise unwanted distortion while preserving the texture and energy of the original recording. 

Refined Single-Driver Sound

By using one carefully engineered dynamic driver across the full frequency range, the OAK NANO delivers a coherent and naturally connected presentation.

A W-shaped diaphragm with an independent surround increases the effective moving area, helping the earphones produce a fuller and more dynamic sound. A specially selected pure-copper voice coil balances the clarity of the beryllium dome with a smoother, more natural tonal character. 

Pure Titanium Construction

The OAK NANO shells are precision CNC-machined from pure titanium, a material chosen for its strength, durability and premium finish.

Mirror polishing and PVD coating give the earphones their distinctive silver appearance, while the watch-inspired design reflects the precise craftsmanship behind the wider OAK Series. 

Carefully Controlled Acoustics

An Acoustic Prism inside the front chamber helps correct the timing and phase of sound waves as they travel towards the ear.

The airflow-controlled rear chamber uses a precision damping mesh to reduce unwanted resonance and improve the weight and definition of the bass and midrange. Together, these technologies help produce a cleaner, fuller and more precisely organised sound.

Two Interchangeable Sound Profiles

The supplied red and black tuning nozzles let you adjust the OAK NANO’s sound to suit your music and preferences.

The red nozzles provide deeper and more authoritative bass, making them ideal for pop, rock and folk. The black nozzles offer a clearer and more detailed high-frequency presentation suited to classical and instrumental recordings. 

Three Interchangeable Plugs

The detachable cable includes 3.5mm, balanced 4.4mm and USB-C interchangeable plugs, allowing the OAK NANO to connect directly to a wide range of audio equipment.

The USB-C plug contains its own DSP and balanced audio decoding hardware, supporting high-resolution PCM playback up to 32-bit/384kHz. It also provides access to an 8-band parametric equaliser through the FiiO Control app or FiiO’s web-based PEQ interface.

Premium Cryogenically Treated Cable

The supplied cable uses high-purity 6N monocrystalline copper conductors with silver plating.

Each conductor undergoes deep cryogenic treatment at -192°C to relieve internal stresses within the metal and promote smooth, reliable signal transmission. Standard 0.78mm 2-pin earphone connectors also make the cable easy to replace or upgrade. 

Generous Accessory Selection

The OAK NANO includes 22 pairs of ear tips, allowing you to experiment with fit, comfort and sound.

The selection includes FiiO HS18 and HS20 tips, SpinFit CP360 tips and several additional styles for bass, vocals and balanced listening. A premium NEST CUBE carrying case is also supplied to keep the earphones and accessories safely organised. 

Specifications

• Earphone type: Single dynamic driver in-ear monitors
• Wearing style: Over-ear
• Driver: 13.8mm beryllium-alloy dynamic driver
• Diaphragm design: W-shaped diaphragm with independent surround
• Frequency response: 10Hz–40kHz
• Impedance: 50Ω at 1kHz
• Sensitivity: 112dB/mW at 1kHz
• Shell material: CNC-machined pure titanium
• Cable material: Cryogenically treated silver-plated monocrystalline copper
• Cable length: Approximately 1.2 metres
• Earphone connector: 0.78mm 2-pin
• Interchangeable plugs: 3.5mm, balanced 4.4mm and USB-C
• USB-C decoding: Up to 32-bit/384kHz PCM
• USB-C sound adjustment: 8-band parametric equaliser
• Weight: Approximately 8.9g per earphone, excluding cable
• Colour: Silver
• Certification: Hi-Res Audio