When I visited Jeff in his shop he talked about being amazed at how different an amp or pre-amp could sound by changing one or two internal wire. He held up three or four little micro-strands of wires, all of which he'd tried in some recent project. He does a lot of iterative testing in development and might use copper in one application and silver in another, all selected by ear.
Like Guido says, just because he uses a specific brand in a specific application today, doesn't mean that he'll use that in all future applications.
Dave
Like Guido says, just because he uses a specific brand in a specific application today, doesn't mean that he'll use that in all future applications.
Dave