The Chinese audio brand FiiO introduces the FiiO Snowsky OAK Nano, the first model in the new FiiO Snowsky Oak product line. According to the manufacturer, this in-ear headphone occupies a particularly high-quality position within the Snowsky line and is considered the spiritual successor to the FiiO FD7. Technically, FiiO has opted for a single dynamic driver, a pure titanium housing, a dome diaphragm made of a beryllium alloy, and finally, carefully tuned acoustics. The detachable modular cable system is particularly practical and offers not only classic analog connections but also a USB-C DSP connector with an 8-band parametric equalizer (PEQ). The new in-ear headphones are being presented ahead of the Hig End audio show in Vienna, where the new in-ear headphones will likely also be on display.
Titanium housing and beryllium driver
The FiiO Snowsky OAK Nano features earcups made of pure titanium, CNC-machined, mirror-smooth polished, and PVD-coated. FiiO emphasizes that the design is inspired by classic watchmaking, but that this approach is primarily reflected in the choice of materials, the surface quality, and the precise finish of the case.
Inside is a 13.8 mm dynamic driver with an external magnet system. The dome-shaped diaphragm is made of a beryllium alloy and, according to the manufacturer, is particularly light and rigid. Combined with a magnetic flux density of nearly 1.5 T, this should ensure a fast response, low distortion, and fine resolution in the high-frequency range.
Acoustic fine-tuning with Acoustic Prism
For the front chamber, FiiO uses an Acoustic Prism System designed to correct the phase of sound waves and reduce time differences and standing waves. The rear chamber, in turn, features controlled damping that regulates airflow, reduces resonances, and stabilizes bass and fundamental tones.
The FiiO Snowsky OAK Nano therefore does not use a complex concept with multiple drivers, but rather a carefully developed approach with a single dynamic driver. The diaphragm, the magnet structure, the volume of the housing, the front chamber, and the rear chamber are all specifically tuned to one another.
Two tuning mouthpieces and USB-C DSP
The package contains red and black tuning mouthpieces. The red version is designed for a more powerful, atmospheric bass response, while the black mouthpiece, according to the manufacturer, is focused more on transparency, detail, and better reproduction of the high frequencies. This allows for mechanical sound adjustment without the need for electronic correction.
FiiO also includes a modular cable with a 0.78 mm 2-pin connector and three interchangeable plugs. In addition to 3.5 mm and 4.4 mm Pentaconn plugs, a USB-C DSP plug is also included, which contains a BES3001-SP DSP audio decoding chip. This supports linear PCM up to 32-bit/384 kHz and an 8-band parametric equalizer (PEQ), which can be adjusted via the FiiO Control app or a web interface.
Extended scope of delivery
FiiO equips the OAK Nano with a silver-plated 6N OCC monocrystalline copper cable, which, according to the manufacturer, has undergone cryogenic treatment at -192°C for over 100 hours. The scope of delivery is exceptionally extensive: in addition to the cable, interchangeable plugs, tuning mouthpieces, and a carrying case, a total of 22 pairs of ear tips in various styles are included. This allows for precise adjustment of both the fit and the sound quality.
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