01-13-13: Pgawan2b
What is the electrical benefit of the dedicated line? Does it remove load issues related to other equipment turning on and off, or are those issues still present regardless of the dedicated line? Or is it simply a matter of current being delivered directly and with less resistance?
If the benefit is the former, then the argument for the conditioner becomes less effective, doesn't it?
The main benefit of a dedicated line is that it will to some degree reduce the amount of electrical noise that will find its way into the audio system from unrelated electrical devices in the house, where it may be generated.
Re your last question, as might be expected reported experiences are diverse. See
this thread, for example, in which many audiophiles reported that following installation of dedicated lines the conditioners they had been using were no longer necessary. And in some cases their systems even sounded significantly better with the conditioners removed. While others reported that conditioners continued to be beneficial.
Regards,
-- Al