Two Knowles drivers paired with a beryllium-plated dynamic driver placed near the opening of the sound tube, controlled by a physical + electronic frequency crossover system masterfully cover the entire frequency response range. High-frequencies: the Knowles RAD-33518 driver provides extremely clear sound with well-extended yet smooth treble. Mid-frequencies: the ED-30262 gives sweeter and fuller vocals as well as a wider soundstage. Low-frequencies: a 10mm-beryllium-plated diaphragm dynamic driver provides explosive bass with shocking authority.

The included high-purity monocrystalline silver-plated copper cable was carefully chosen for its fidelity and ability to resolve details, being noticeably better than the typical earphone cable. One's music will sound sublime with the included cable, which brings out the best of the FH3's drivers. 4 strands of 96 wires, gold-plated plugs, 3.5mm jack, MMCX connectors..

Even more performance is extracted from the beryllium-plated dynamic driver when it is combined with FiiO's patented S.TURBO acoustic design. The longer and smoother turbine inspired sound tubes effectively filter unwanted high frequencies, giving a deeper and harder-hitting bass. Patent number: ZL 2018 2 1141627.9 Physical + electronic three-way crossover Tube length: 41.5mm Effective crossover rolloff: about 32dB

The carefully-designed internal acoustic structure as a physical frequency crossover system- ensuring that bass, mids, and treble seamlessly blend without interfering with each other for an extremely vivid experience