iFi DC iPURIFIER2Is underlying system noise polluting your enjoyment of music? The iFi audio DC iPurifier2 will reduce interference in your system, often caused by noisy power supplies. Unwanted noise. Gone. Your everyday Switch Mode Power Supplies (SMPS)are very noisy. They were never really intended for audio use. The DC iPurifier2, just like its predecessor, combats unwanted noise coming from SMPS to ensure the pure sound of your audio wins through. Handles