FiiO FA9

Overview

The FiiO FA9 is a flagship in-ear monitor featuring 6 Knowles balanced armature drivers, an ultra-long 80.6 mm acoustic sound tube, and 3-way electronic sound tuning switches.

Constructed with DLP 3D-printed high-transparency resin shells, the FA9 integrates three hardware tuning switches allowing custom adjustment of impedance, bass boost, and treble presence. With an 80.6 mm labyrinth sound tube filtering unwanted harmonic distortion and an 8-strand monocrystalline silver-plated copper MMCX cable, it delivers reference audiophile resolution.

Key specifications

• Flagship in-ear monitor featuring 6 Knowles balanced armature drivers per earpiece
• DLP 3D-printed skin-friendly resin housing with diamond-cut aesthetic faceplates
• Ultra-long 80.6 mm labyrinth acoustic sound tube acting as a physical low-pass filter
• Three physical hardware DIP switches providing 8 distinct customized sound signatures
• Dual Knowles HODVTEC bass drivers, dual EJ-33877 mid drivers, and dual SWFK-31736 treble drivers
• Four-way independent acoustic crossover network ensuring seamless multi-driver coherence
• High-purity 8-strand monocrystalline silver-plated copper detachable MMCX cable
• Includes premium HB3 leatherette carrying case and 15 pairs of audiophile eartips