You can buy these new cables with either standard 1/4-inch TS or tip-sleeve plugs (tested here) or the aforementioned REAN loudspeaker connectors--ready to use anywhere.

The 1/4-inch plugs have nickel-plated contacts for efficient signal transfer, a zinc die-cast housing for good reliability and a "crimp" strain relief is used for the larger-diameter cables. The REAN loudspeaker connectors have silver-plated contacts, a glass-reinforced housing, twist-lock mating system (similar to Neutrik's speakON® brand) and a chuck-type strain relief for maximum cable retention.

I received a 10-foot; 1/4-inch to 1/4-inch cable and it immediately went to work connecting my 200-watt guitar head to the remote speaker cabinet across the room. As hard as I tried, I could not break it or cause it to fail for the short time I had use of it. The plugs have the jumbo covers made out of metal--not plastic--and they plug in and feel solid in the amp head and cab jacks. This is a heavy-duty cable but it is supple-feeling, coils up easily and did not kink, twist or "misbehave" by being stiff and overly rigid while in use.