Can you explain that when I use the AC iPurifier in the correct polarity, sound is brighter but in reverse polarity the sound is a lot warmer? All my units are of two-pin except one, which is with earth/ground pin also, due to wiring at my home three-pin version is always in reverse polarity. Why it is happening?
Answer: In principle, the AC iPurifier treats live & neutral equal, so it should not make a difference. It could, however, be an interaction with some pieces of equipment that have no earth and an asymmetric internal design. Also, if the units are operated without earth, the common-mode side of the function is not available or functional. You should try to make them all earthed.
