Synergistic Research PowerCell SX Power Conditioner

In 2007, Synergistic Research developed a DC-biased, electromagnetic (EM), AC-filtering cell that they claim improves the quality of AC by affecting the movement of electrons through its conductive materials. According to Synergistic, the cell works without current restriction — the Achilles’ heel of many early power conditioners, and of more than a few still sold today. In fact, Synergistic says, the more AC-powered devices are fed through the cell, the better it works.