iFis AC iPurifier cleans up dirty AC power sources and detects and solves EMI/RFI issues and ground/ground issues caused by power supply.Exceptionally user-friendly, just plug it into a home power wall outlet or extension power tap where the audio system is connected and detects the problem and delivers 40dB or 100 times noise reduction.Function List: Like active noise cancellation (ANC), military technology ANC provides the most advanced power supply noise cancellation.■ This is a complex circuit that significantly reduces noise from wireless, noise, and nuplification power line without auditory or visual "side effects"■ Detects this when there is no smart ground diagnostic ground/ground exist.■ Detects this when the smart polarity diagnostic polarity is wrong.■Intelligent Ground/Ground Loop Protection Circuitry adds the ultimate ground/groundThe ground/ground connection is "Intelligent"Because "even if the system was already connected to the ground (there will be a ground loop if two or more grounds), it will not be the cause of a ground loop.It has an overvoltage surge (sudden rise) protection automatic return system.

[Specifications] Noise reduction: >40dB (>100x) Surge protection: Maximum 25,000 Amp @ 8/50uS Operating voltage: 85 V - 265 V Size: (Diameter x Length) 1.6 inches (40 x 100 mm) Weight: 3.5 oz (108 g)