AudioQuest's Black Lab cable delivers all the deep bass goodness your powered subwoofer is capable of. This cable features two identical conductors, and each conductor is a single, unbroken strand of AudioQuest's high-purity Long-Grain Copper. Solid conductors eliminate electrical and magnetic interference that can make multi-strand conductor cables sound brittle. Black Lab features RCA connectors made of gold-plated copper. The connectors are fastened by cold welding — a solder-less process that uses high pressure and silver paste to minimize signal loss. By contrast, solder tends to impede the signal, and heating the copper conductor can negatively affect its performance. Unique grounding cable - In most cases this won't be needed but if you suffer excessive hum from your subwoofer, then the Black Lab should be able to help. By connecting the ground cable to the metal chassis of your sub and the ground on your amp, earth hum problems should be solved. Solid-core conductors for low distortion - For many years Audioquest has advocated solid-core rather than multi-strand cables. Electrical and magnetic interaction between strands in conventional cables can cause distortion, giving an unnatural edge to the sound and picture. Using Long-Grain Copper, the Audioquest Black Lab gives a cleaner, clearer sound than regular cables using OFHC (Oxygen-Free High-Conductivity) copper, thanks to fewer impurities. Air-filled foamed-polyethylene insulation - Wire insulation can cause an imperfect signal by absorbing energy and then releasing it as distortion. The Black Lab uses air-filled Foamed-Polyethylene as air absorbs next to no energy and Polyethylene is low-loss and has a benign distortion profile. The result is reduced distortion for an even purer sound quality. Treat your subwoofer to a cable that's designed to get the best from it - the Audioquest Black Lab.