There are, now, silver pennies available for audiophile applications -- and cryogenically treated for a small premium. Silver is a better conductor as you all know.
Silver dollars, dimes, etc, mentioned above won't do: they have the wrong gauge for the application. "Multistranding" the pennies, as in a piggy bank, creates channel cross-talk and vulnerability to emi -- not to mention problems due to chaotic surface contact between the pennies.
What we really need is a selection of matched, NOS, wide-bandwidth pennies.
Silver dollars, dimes, etc, mentioned above won't do: they have the wrong gauge for the application. "Multistranding" the pennies, as in a piggy bank, creates channel cross-talk and vulnerability to emi -- not to mention problems due to chaotic surface contact between the pennies.
What we really need is a selection of matched, NOS, wide-bandwidth pennies.