Monster Ultra8482; Series THX 1000 Speaker Cable with Monster Tips (20 ft) Larger copper contact delivers the power you need for powerful, dynamic home theater sound. QuadriPole construction eliminates high frequency loss for fuller, more balanced sound. Magnetic Flux Tube for deeper, tighter bass. Time Correct windings for more detailed, accurate sound reproduction. Exceeds THX certification standards for proper system performance, reliability and ease of installation.