Speaker cables are not shielded ... As for analog interconnects, these cheap Seismic Audio Patch Cables with gold-plated RCA ...

A cable used to transfer analog or digital signals from an audio source to an amplifier or powered speaker. Cables are identified more by their plugs and sockets than by the shape or color of the ...

Audio Cu uses your home’s existing power ... which is often used in both speaker and power cables because of its excellent conductivity. Using power lines to transmit data isn’t new.