2.What material is the included cable of the FF3? Is it replaceable? And how to change the earphone plug?

The FF3 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;

The units of FF3 is inseparable from the cable. The FF3 has been equipped with 3.5mm single-ended, and 4.4mm balanced plugs, which can be replaced according to your needs.