Silver Banana Plugs

Gthirteen, how've you been? I can pass along a chart to you that lists wire gauges from 0 down to 40, if you'd like. 15 gauge wire is 1.448 mm2(or 0.057 inch2). Now just perform a simple area calculation. To find out what two 15 gauge conductors would yield, square 1.448, and multiply it by two(because you have two of these conductors), then take the square root. So, two 15 gauge wires put together would give you a 12 gauge(2.048 mm2 or 0.0806 inch2) composite.

Gthirteen, just came across the fact that Audio Note makes silver plated bananas. Very reasonable too(2.95 British pounds each - not sure what they sell for in the US). Contact a US distributor, or I presume you could order them directly from the UK. They do not advocate solid silver, as they feel them not up to long term use. I have no experience with them, but the few instances I have been next to Audio Note stuff had me walking away impressed. Good Luck!