This Y-subwoofer is perfect for use with subwoofers which have dual inputs running from a single sub pre-output on your AV receivers (amplifiers). As most amps only have a single output for the subwoofer, this cable breaks the signal into two, so you can connect to both inputs on the subwoofer. By using the Y-cable the input level is thus increased. The adapter cable is carefully manufactured and is of high quality. The plug is made of gold-plated contacts, and the finely worked copper housing guarantees optimal screening. High quality 24K gold-plated connectors ensure secure contact. A nylon mesh protects the quad shielded cable. To minimize a cable break the solder joint is additionally sealed with a quality filter.