As far as sound is concerned, hardly anything noticeable even with the most sophisticated measuring equipment, including your ears.
As far as your wallet is concerned, a great reduction in its thickness.
Measured in ohms, the difference in the resistance of 24-gauge, 1000-foot-long silver and copper wire is a mere 2 ohms. Your connections are likely to have more resistance since some of them are likely to be brass.
And... you are very unlikely to use 24 gauge wire for a 1000 feet.
Basically, NO DIFFERENCE.
Others who claim otherwise need to see audiologists as usual is the case in this forum.