I know someone who makes homemade interconnects that are very much based on the less-metal-is-better concept for the contact points. The hot pin for the RCA is a small hollow piece of metal that he gets from busting up old tube sockets. That metal tube is soldered to his wire on both ends. He makes two such hot wires for a stereo pair and then uses a single piece of bare wire to connect the chassis' of his two components together for a ground connection (i.e., two hot wires and a common ground). The wire itself looks like magnet wire to me.
This ultra cheap interconnect work extremely well, at least for line level connections (did not hear it as a phono connection), although it is quite delicate and messy. I have no idea as to how important is the low mass aspect of the hot pin to the particular "sound" of this homemade interconnect, but, I do know that the whole thing was very nice sounding in a tube-based system.
This ultra cheap interconnect work extremely well, at least for line level connections (did not hear it as a phono connection), although it is quite delicate and messy. I have no idea as to how important is the low mass aspect of the hot pin to the particular "sound" of this homemade interconnect, but, I do know that the whole thing was very nice sounding in a tube-based system.