Halo 2 Bi-wire jumpers combine five solid-core and 'multicore' conductors per jumper (equal to 13 AWG) arranged with our helical twist geometry, and incorporating our distributed gauge technology the most neutral tonal balance. Insulation is super air-spaced PTFE Teflon. Like Halo 2 speaker cable, they provide a sweet, musical sound with refined high frequencies and powerful bass.