Chang Lightspeed power filters significantly reduce AC mains contaminants and impurities while protecting your equipment from potentially damaging voltage surges. Using proprietary magnetic core materials that are now in their 3rd and 4th generation, highly effective power filtration is achieved without compromising power delivery unlike conventional transformer based designed which can introduce significant time delays that can muddy the sound.

Typical sonic benefits using Chang Lightspeed power filters are lowering of the noise floor, better low level resolution, superior dynamics, and increased spaciousness.

For video, lower noise translates into deeper black levels, increased shadow detail and a finer color palate (more film-like and less pumped-up or blooming).

The Chang Lightspeed "Encounter" power filter has received great praise in The Absolute Sound CES show report for both 2006 and 2007 and "hyperdrive" is a new technology being introduced in 2008.