WA304 is a Shure copper signal cable intended for professional audio applications. It uses high-purity copper conductors with integrated shielding to minimize RF and EMI interference, preserving signal integrity across standard pro equipment. The durable, flexible jacket suits stage and studio use, and shielding combines foil and braid for continuous coverage. Compatible with common pro-audio connectors, the exact impedance and capacitance specifications are defined in the official data sheet.