It~s just a cable~until you~re listening to your favorite tunes. The Best Buy essentials 15~ RCA Cable for Subwoofers connects self-powered subwoofers using an RCA connection. It~s designed to reduce signal loss and maintain low-frequency bass, so you~ll always be listening to high-quality audio. With a 15 ft. length, set up your devices how you want them, knowing you have flexible placement options and the reach you need. Our copper shield improves audio quality, while durable nickel-plated brass connectors and a flexible PVC cord prevent corrosion and grant durability. And it~s all backed by Best Buy, so you can trust it to transmit the high-quality sound you want.