First thank you to elite audio broadcasting for the telephone reception and the relevant advice; fast delivery and well-packed package in addition. the first listening confirms the gain in hearing quality and reduction of background noise. plugged into the first outlet of the power strip, the device does the job and it does it well!
It is a good acquisition which for a reasonable price allows a more important in audio quality; knowing that it also makes it possible to know if the current phase is good as well as the earth; it also provides effective protection against overvoltages! I think it must also bring a plus in video installation ……. for the HIFI in any case it works!