Precision coaxial cable with bandwidth into the Gigahertz far beyond the requirements of any digital audio format; rated CMR, allowing installation in walls and risers ^^ Canare RCA connectors provide high impedance stability through the cable/connector interface to minimize return loss ^^ Circular leaf-spring ground contact gives the RCA plug firm engagement with the jack, but without the over-tightness of turbine and similar type RCAs which can damage jacks ^^ Assembled in our Seattle, Washington shop by experienced American workers