AudioQuest RCA Noise-Stopper Caps deliver professional-grade protection for your audio setup. This 10-piece set shields open RCA ports from electromagnetic and radio frequency interference that degrades sound quality. Each cap employs 23 internal springs to ensure a snug, universal fit across standard RCA connectors while simultaneously guarding against dust accumulation and oxidative corrosion. Essential for maintaining signal integrity in high-fidelity systems, these stoppers are an audiophile's practical solution to preserving pristine audio performance.