iFi DC Blocker PlusSayonara mechanical hum. Mains electricity, crucial to your audio systems, can often be disrupted by various interferences, distorting the AC waveform, and reducing audio quality. DC on the mains is a common problem, particularly with amplifiers. Although household outlets are intended to deliver pure AC power, a range of your home appliancesfrom lighting controls to home appliances power suppliescreate asymmetrical loads, resulting in DC voltage on