KL3 Speaker Wire - over sized Oxygen Free Copper speaker cable provides superior frequency response compared to smaller, conventional speaker wire. Each conductor is composed of fine 36 gauge strands of bare oxygen free copper and then individually insulated in red and black PVC for easy polarity identification. The KL3 Speaker wire is then wrapped in ultra flex "no memory" white PVC for a single round profile finish. Unlike other cables, hard and still jacketed cables on the market, our KL3 series does not retain its shape after uncoiling. CL3 Rated Audiophile Speaker Wire is composed of the finest Oxygen Free Copper for superb audio accuracy and flexibility. The KL3 Kable bears the UL mark (E313739) and is approved for residential and commercial in wall or ceiling applications. The cable in finished in a White Ultra-Flex PVC Jacket - Also available per foot & 100' / 250' increments. This is the finest In Wall CL3/UL architecture / New Construction Speaker Cable on the market today! Other manufactures have 75 strands or less in their cable! Core Material: 36 Gauge Oxygen Free CopperLength: Available in various length Dielectric: Ultra Flex PVC Outer Diameter: 9.5mmMax Continuous Length: 1200 Feet Plain and Simple Specifications Wire type - CCA or OFC These materials are commonly used, but not commonly stated when shopping online. Know what you are purchasing. Both metals are capable of performing up to their rated loads. American Wire Gauge Wire gauge is crucial to powering your system correctly. Undersized cable will create unsafe conditions and may shorten your amplifier's life. True American Wire Gauge (AWG) Products Using American Wire Gauge standards, the gauge of stranded wire is determined by the total area of the conductor. To calculate this you would take the area of each strand and add it together. This area, in square mm, then determines gauge. Speaker Wire is often written as 12-2 or 12/2. This means 12 gauge x 2 conductor, both positive and negative signal are carried within one cable and are each 12 gauge. Diameter is not as critical with stranded wire, this is due to the tiny air gaps between each strand. Diameter may fluctuate with strand size and how tightly wound the rope of the cable is. The smaller the number, the larger the wire, until you reach zero or aught (0). Most speaker wire ranges from 10 to 16 gauge. 18 to 22 gauge is often much too thin for most Home Theater applications. Based on AWG, the true gauge of this cable is 12 Gauge Oxygen Free Copper - The standard in audio Quality cables use quality materials. Oxygen Free Copper is copper of at least 4n purity. That means the conductor must be at least 99.99% copper. Copper speaker wire provides lower resistance than similar sized CCA cable. This means improved frequency response. The ultra fine OFC strands in the KL3 speaker wire allow for more current to flow as AC voltage travels on the conductors edges. Another benefit to the high strand count, our cable is incredibly flexible