Home / Products / F9 Series
Model F9 Pro F9 F5 F3 F1
General Specifications
Type 1 dynamic and 2 balanced armature drivers (knowles TWFK-30017-000) 1 dynamic and 2 balanced armature drivers Dynamic(13.6 mm) Dynamic(11 mm) Dynamic(9.2 mm)
Frequency Response 15Hz~40kHz 15Hz~40kHz 20Hz~40kHz 15Hz~20kHz 20Hz~20kHz
Sensitivity 106 dB/mW 106 dB/mW 102 dB/mW 98 dB/mW 97 dB/mW
Impedance 28 Ω 28 Ω 32 Ω 40 Ω 16 Ω
Plug 3.5mm L-shaped gold-plated stereo jack / 2.5mm TRRS L-shaped gold-plated stereo jack 3.5mm straight gold-plated stereo jack / 2.5mm TRRS straight gold-plated stereo jack

3.5mm straight gold-plated stereo jack (CTIA standard) /

2.5mm TRRS straight gold-plated stereo jack

3.5mm L-shaped gold-plated stereo jack (CTIA standard) 3.5mm L-shaped gold-plated stereo jack (CTIA standard)
Cord length 1.2 m 1.2 m 1.2 m 1.2 m 1.2 m
Weight 3.76 g/per unit 3.76 g/per unit 21 g 19.6 g 19.8 g
Color Titanium(with "PRO" mark on the Y-splitter and the earbuds) Black/Red Black Transluent(Three replaceable covers: Red/Blue/Black) Black
Detachable cable design Yes (standard MMCX connector) Yes (standard MMCX connector) Yes (standard MMCX connector) N/A N/A

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