An earphone cable includes a first signal wire group, a second signal wire group, and a sheath layer. The first signal group includes at least one first conducting wire. The second signal wire group includes at least one second conducting wire, and the second signal wire group is insulated from the first signal wire group. At least one of the first signal wire group and the second signal wire group comprises at least one carbon nanotube wire. The sheath layer located about the first signal wire group and the second signal wire group.