Silver hook-up wires should logically be thinner vs. copper due to their superior conducting abilities.
That also gives more possibilities of the skin effect which can trim the bass frequencies. Today's copper wires are optimized for the best and balanced performance. If you're shopping for silver wires, you can research the best gauge for audio application weather it's for speaker or components hook-ups. The best sounding I found silver coated copper wires that give a great advantage of equal distribution of the electrones.
That also gives more possibilities of the skin effect which can trim the bass frequencies. Today's copper wires are optimized for the best and balanced performance. If you're shopping for silver wires, you can research the best gauge for audio application weather it's for speaker or components hook-ups. The best sounding I found silver coated copper wires that give a great advantage of equal distribution of the electrones.