Mitch makes some good suggestions. I'll second using the VH AirLok hookup wire. If your system is already bright, use the copper, otherwise use the silver. If you don't really need a shield, just braid three together you'll connect a +, -, and ground on each end. A larger gauge isn't really necessary with the lower current; although, if this is for the connection between the pre and power amps, you may prefer using 21awg.
Building balanced interconnects--ideas
Want to make ultra high-quality, 1.5 meter interconnects with Furutech rhodium XLRs. I am open to dielectrics--could use teflon or silk or cotton tubing over ohno continuous cast wire--this is a must-have, either copper or silver. This construction requires solid wire, but what gauges work best in terms of skin effect/time delays? Or, do you prefer stranded wire with a foamed teflon? I would prefer to not use a wire/metal shield. I am thinking a three-wire braid, each wire having its own Techflex carbon braided shield. Which ideas have you had better success with? What type of solder is best? I think we all want some answers and testimony about wire construction--let's lay it down!