3. What material is the included cable of the FF3S? Is it replaceable? And how to change the earphone plug?

The FF3S is equipped with 152-core high-purity single-crystal copper silver-plated wire with a length of 1.2 meters, better electrical conductivity, lower impedance, relatively warm mid-frequency, and richer high-frequency details.

FIIO listened to user feedback and equipped the FF3S with a 0.78mm 2pin detachable cable, allowing users endless upgrade possibilities in enhancing their listening experience. Also, an easy-to-feel point was added to the left earbud in order to more easily distinguish between the left and right earbuds for a truly ergonomic design.The FF3 has been equipped with 3.5mm single-ended, and 4.4mm balanced plugs, which can be replaced according to your needs. Please refer to the attached manual to learn how to replace the plug.