How do I know if my RCA subwoofer cable is bad?
How do you test a bad RCA cable?
Do RCA cables affect sound quality?
Do RCA cables affect sound quality? RCA cables do make a difference due to them being high-level signal cables that are analog. Due to this, they are susceptible to noise and interference and the only way to overcome this is to use high-quality RCA cables, keep them short, and away from other audio equipment.