Monoprice 141373 CL2 12AWG Oxygen-Free Speaker Wire 100ft

The Monoprice 141373 is a 100-foot spool of 2-conductor, 12AWG speaker wire built with high-purity oxygen-free bare copper conductors rated at greater than 99.95% purity. This level of copper purity reduces oxidation and maintains consistent electrical conductivity over the life of the installation, ensuring that the impedance load your amplifier sees stays as close as possible to the actual impedance curve of your speakers. The result is cleaner power delivery and more accurate audio reproduction, particularly over longer cable runs where resistance losses in lesser wire can become audible.

Each conductor is wrapped in a color-coded PVC jacket for straightforward polarity identification, which is especially helpful during longer installations where keeping track of positive and negative can otherwise become confusing. The outer jacket carries a CL2 rating, meaning it meets the fire safety requirements for permanent installation inside the walls of residential buildings — a critical certification for anyone running speaker wire through walls, ceilings, or floors as part of a home theater or whole-house audio system. At 12AWG, this is a heavier gauge wire that keeps resistance low even on runs of 50 feet or more, making it well-suited for larger rooms or systems with amplifiers driving speakers at higher power levels.