Dedicated Electrical

Muliple lines runs the risk of ground loops. Even if this is avoided every wire is an antenna bringing RFI into the system. So one single dedicated line is the way to go.

@millercarbon is that the reason that a couple of my components were manufactured with only two wire power cords (meaning no ground)? My Maranzt SA10 does not have the ground, nor does an old M&K subwoofer I am still using. Long ago a manufacturer (that I won’t name) suggest "floating the ground" with a 3-to-2-blade adapter to try to get rid of hum; I am not at all planning on doing that, but would that theoretically be a solution to RFI?

(And I should note that I presently do NOT have hum. And I am NOT "floating the grounds.")

Another question: is that what power conditioners theoretically do? Remove RFI?

Last question: in the room my system is now in, I put three dedicated lines in (my mindset was that I would not only be isolating them from everything else in the house, but from each other--at the time not understanding how the neutral bar in the electrical panel functions), so from what I am getting from this is that I should turn two of the three circuit breakers ’OFF’ and just use one of the three outlets?

immathewj- Your old vintage components are made that way because that’s the way pretty much everything was made back then.

Thanks for getting back to me on this, @millercarbon  , the M&K sub is old (25 years or so) but not vintage, and the Maranzt is almost a new SACD player.  With the Maranzt, in particular, I was thinking maybe they made it that way because of RFI?

But then is your take/advice on power conditioners that they do overall good?  Or are they like most medicines which, as examples, might lower your blood pressure or alleviate depression but may screw something else up?

I do intend to rum my system on the one ddicated circuit as soon as I get my listening room back together.  I was actually changing some things around on my dedicated lines when I caught this thread, and today was a totally nonproductive day up in the attic, and I have a few more to go, but I am just hoping they will be more productive.  This is not the kind of attic that is fun to be up in. 

But thank you for the input/insight.

Thank you, @millercarbon ; to have enough outlets for all the gear (amp, pre, digital source, sub) on the one dedicated circuit, are there any acceptable alternatives to connecting an outlet to the existing outlet that I am going to use as the dedicated circuit? That probably sounds like a stupid question, but is there such a thing as an acceptable grade of strip (other than a power conditioner)?

And as it happens, I do have a power conditioner; I bought it around 25 years ago from a dealer in Philthadelphia who was very good at selling me things. At the time, I considered the $600 to be outrageously expensive. It is the "Prometheus Power Flo" and there is no point on doing a search on it as I just did and . . . nothing. I have used it and not used it (was in the NOT mode the last time I was running my system on three ’dedicated’ circuits, and if it made a difference, my ears were not picking it up. That typed, I am the first to admit that I probably don’t have the ears for this "hobby" . . . however I do enjoy immersing myself in in music and my ears are good enough to tell when it sounds good or not so good.

Thank you, @millercarbon ,

last question (for a while) it was either here or on AA, that I read something to the effect of ’most powered subwoofers have such crappy power that they feed crap back into whatever circuit they are on, and therefore. . . .’ now I apologize for not being able to pull the entire quote from my memory word for word and possibly not in context, but for that reason I had my sub all by itself on one of my three dedicated circuits. But I am now assuming that that statement about a powered sub degrading everything else on the circuit was untrue?

Oh, and on edit

Two, this bugs you and you want to find out whether your lack of hearing any difference is based in reality, or a lack of listening skill.

I am pretty sure I know the answer as well, I am pretty sure it is hearing/listening skill.

But the thing is, for me, I think hearing is kind of like the subconcious. I may not immediately hear something, but it can sound better without me immediately knowing it, except, over a period of time, I begin to realize that I am more gratified than I was in the past . . . which makes critical listning A?Bs difficult for me.

Oh, and on another edit, to one of my earlier questions:  ideally I should probably put another outlet inline with whatever I choose for my one dedicated circuit outlet?