Dedicated Electrical

Well, depends on the distance and circuits. If it's a long run and you are planning multiple circuits a sub panel is the way to go.  The voltage drop / foot will be smaller.

A subpanel won't add anyting.  It is often used if you are putting in service to many circuits a long distance from the box. run one big wire and split it up.  or if you are running out of breaker positions in your box.  Neither applies to you.  Jerry

@offbrandracing, See article below:

Mike

run one big wire and split it up.

That would be a standard configuration for a sub-panel.

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?