CL3-rated (UL certified) in-wall and direct burial oxygen-free copper (OFC) speaker cables are engineered for outdoor, in-wall, and in-ceiling installations, meeting fire-resistance standards for residential and commercial use. The heavy-duty PVC-filled outer jacket is ideal for personal projects, home theaters, commercial audio systems, conference rooms, and entertainment venues. Its direct burial rating permits underground installation without conduit. Eliminating oxygen traces from the cable reduces oxidation risk, which can degrade durability and lower conductivity. Thus, OFC cables deliver more power to your amplifier, enhance efficiency, and lessen strain on your electrical system, resulting in superior audio quality and performance from your equipment. Though a larger initial investment, CL3-rated OFC cables offer longer life and long-term savings. Color-coded insulation on each conductor allows for quick, accurate polarity identification, ensuring true audio frequency and sound wave transmission from source to speakers. The easy-strip jacket and insulation design simplify splicing and installation for a hassle-free setup. Foot markers provide clear measurements of wire used and remaining length. The UL-certified CL3-rated, PVC-filled jacket withstands up to 300V and offers excellent resistance to crushing and bending. The copper cables are SGS (Société Générale de Surveillance) certified as 99.9% pure oxygen-free copper. This cable is also suitable for any low-voltage
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First Listed on Newegg
June 10, 2026
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