Chang Lightspeed

About Chang Lightspeed

Chang Lightspeed is a U.S.-based hi-fi audio brand specializing in advanced powerline filters for audiophiles and home theater enthusiasts. Founded in 1991 by engineer Michael Chang, the company is renowned for its proprietary passive filtering technology, which removes AC line impurities, protects against voltage surges, and suppresses RFI/EMI interference without using lag-inducing coils or transformers. All products are handcrafted in Ohio, offering high surge protection, instant current delivery, and dynamic, undiminished sound quality. The lineup includes several series with analog, digital, and power amplifier-specific models, favored for their reliability, sonic improvements, and robust component protection.