The second-generation 60 mm dynamic driver has a composite diaphragm of wood fibre taken from ninety-year-old Northern European spruce. It measures a tenth of a millimetre thick and the cone weighs just 0.14 grams. Its effective vibrating area gains 25.8 % over the previous generation.
The voice coil reaches 25 millimetres across, each wire about 0.035 mm. A W-shaped suspension gasket, a U-shaped acoustic damping tube and a conical baffle complete the acoustics. Impedance settles at 32 ohms for 98 dB per milliwatt.
Frequency response runs from 10 Hz to 40 kHz. The headphones weigh 340 grams without the cable, and earpad pressure is set at 4.5 newtons. The headband slides over 38 millimetres, rotates 35 degrees horizontally and tilts 45 degrees.
The cups come in black walnut or beech, both real timbers. The silver-plated oxygen-free copper cable measures about 1.5 metres and connects with two 3.5 mm plugs. FiiO supplies a 3.5 mm termination, a 4.4 mm balanced termination, a 6.35 mm adapter and a carry pouch.
Data sheet
Specific References
The FiiO BTR17 is a portable Bluetooth DAC and headphone amplifier with dual ES9069Q DAC, a THX AAA 78+ amplifier and a desktop mode delivering up to 650 mW.
The FiiO K11 R2R is a desktop DAC and headphone amplifier featuring a fully differential 24-bit R2R DAC, NOS/OS modes, and 1,300 mW of power.
The FiiO K11 is a desktop headphone DAC and amplifier with a CS43198 chip, balanced 4.4 mm outputs and 1400 mW of power.
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