Serenade II SC Advanced Helical design featuring "CCT" (compressed copper technology) conductors and super foamed dual PTFE / polypropylene insulation. Serenade delivers an engaging, full soundstage for true "lifelike" performance. You hear all of the details and inflections of the performance totally unrestricted by this low resistance speaker cable. The "baby brother" to Crescendo has amazed many in the industry by offering such reference level performance attributes at such as reasonable price. Worthy of an audition with any high level separate component based system.