The AC iPurifier is another innovative yet moderately priced product manufactured by iFi. It is claimed to actively detect and cancel AC line noise using advanced technology. When deployed at the right location, the device can be surprisingly effective with immediately perceivable sonic results. In some extreme cases, the improvements in micro dynamics, image clarity, bass delineation, sense of calmness and degree of background darkness can elevate the system’s performance to the next level. Strongly recommended.