Audiophilepure

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” Intelligent Polarity detector – when used with USA and EU type mains plugs, this Intelligent Polarity feature will automatically tell the user whether they’ve got them plugged in the right way for whichever country they’re in. A green LED indicates correct polarity a red LED means incorrect.

Audio Ground connection – If the user is not sure if their audio set up has a Ground/Earth, simply plug the AC iPurifier into the system and it will indicate one way or the other. A green LED means ‘Yes’; a red one means ‘No’. The AC iPurifier will only actively provide a Ground/Earth if it detects the lack of one. This avoids creating a ground loop. ”