Killer Watt Speaker Leads use the finest materials available and are constructed to last and last. They are happy to live under stage paraphernalia and musicians’ feet. Cable conductors are properly terminated and the jacket firmly gripped. All versions use 2.5mm Sommer Meridian Speaker Cable for the lowest DC losses. (Most others use cheaper 1.5mm). The plugs are either Neutrik Jacks, Neutrik Speakons which mate with Speaklocs or Gold Plated 4mm stackable Banana Plugs. Jack plug leads use the new Neutrik NYS225 high current speaker Jack.