The Niagara 7000 is AudioQuest's ultimate expression of the art and science of AC power conditioning. In fact, with a laser-like focus on eliminating AC-related noise, as well as reducing the harmful effects of RFI and EMI, they describe the Niagara series not as "power conditioners" but as "Low-Z Power Noise-Dissipation Systems." For the technically inclined, "Z" refers to electrical impedance. Maintaining a low and