So much FUD in some of these comments, just like in the last power filter review/test. I live in a dense urban environment, with light dimmer switches, window ACs, old fridges, HVAC condensate pumps, tons of wi-fi networks including public ones, contractors and residents constantly using power tools plugged into AC, decades-old electrical wires strung above ground on poles, cable TV/internet lines strung everywhere, dense cell-tower infrastructure, and anything else you can think of. I’ve had 3 power amps, two preamps, 3 DAC/digital source components, a graphic equalizer, and two streaming devices in my system during the past 10 years. The only noise I’ve had was mechanical hum from the toroidal transformer in one of those power amps - precisely because my AC is dirty and has DC in the line. That problem was solved by a $150 DC blocker (a different, more specific tech that, unlike these alleged power cleaners, actually works).
My point is that I - like many others who could chime in here with similar situations - have never been able to produce the problem these cleaners claim to solve, even though I’ve had multiple items in the chain, Class AB amplification (including a used Adcom amp I got for $150), Class D amplification, a cheap computer streamer with a cheap PSU and unfiltered USB connection to my DAC, linear and switch-mode PSUs, unbalanced interconnects, etc. So what lengths is Amir supposed to go to in order to find this mythical Black Swan setup that would be so FUBAR with AC noise that it would benefit from a $1500 AC “cleaner”?
The objections raised here and in the other AC cleaner thread are nonsense. The device does not do what the manufacturer claims.