Quad panel outlet - can I do one circuit on this?

@jumia below is another thread in which I believe JEA talks about how he suggests running Romex. And deviating from his advice may have an effect on the sonic result of multiple circuits. You did mention how gear might have an effect on what I heard when doing 3 vs 1 experiments, and maybe it would, I don’t know. I am running a Cary SLP-05 in front of a Cary V12, in front of a pair of B&W 805s supplemented with an old M&K powered sub, interconnects by Kimber Silver Streak and biwired (I think, but it was a long time ago) Kimber 6TC and 8TC.

Can I do a 20 amp dedicated circuit to four outlets in a quad panel on the wall?

. . . oh, but the answer to this would be ’yes.’ You could use a strip, a power conditioner, or you could connect your two duplexes (which were on the same 20A circuit) with Romex.

(And I see no reason that one 20A circuit shouldn't be able to handle all your gear.)

@jumia  , I was inclined to think along those same lines.  I read the thread that I am going to paste below and that is what got me interested in experimenting with one versus three circuits.  In all fairness to the multiple circuit school of thought, JEA has previously provided advice on how the circuits should be routed and segregated from each other in the attic, wall, and panel, and in all honesty, I did not meet his criteria when I was stringing the Romex.  But here is the thread I was talking about, and then I'll find the thread that JEA explains how he advises running multiple circuits.

Until quite recently I was using three 20A circuits to fed three duplex outlets with four pieces of gear on them. I did the experiment of putting all four pieces of gear on one 20A circuit & tripped the other breakers to ,off (when I listen there is nothing else operating on that leg of the breaker panel) and although it is not a kick-in-the-balls change, I do believe I prefer the single 20A system.

Prior to performing the above experiment I was not predisposed to believing I would like one more than the other. As a matter of fact I was hoping that I would like the three 20A system better.

Of course, you didn’t ask about three circuits vs one circuit, you did ask about two vs one, and I did not try my system on two.

So no digital stuff mixing in it appears. And certainly not a TV set. So it's somewhat pure.

That seems to be the main argument for having multiple dedicated circuits.  In the first thread I pasted, MC doesn't subscribe to that logic.  In the second thread, Eric Squires suggests one circuit but with a device to isolate digital.  (I haven't done that yet.)  I had thought that having separate circuits would better isolate them, their power draw, from one another.  Again, MC refers back to what they all share in common--the neutral/ground bar at the panel.

I don't have a good enough grasp of electricity to understand the theory involved, but I do feel I recognized an incremental improvement when I put all four of my components on one duplex. 

It's about the clarity and isolation of the electricity and making sure less restricted Power availability is always there which is enhanced with a higher gauge electrical wire.

I have not once made any claims whatsoever to have a real tight grasp on this subject, and when I ran three dedicated lines it was because I perceived things as you stated above.  However, there does appear to be two points of view on this subject, and one of those POVs seems to feel that what happens at the neutral/ground bar with multiple circuits is not desirable.  In my own recent experience, I believe that I am preferring what I am hearing by only using one circuit.  However, with that typed, I do intend on listening on all three dedicated circuits again to see if I actually do hear degradation, no change, or an improvement.

But not tonight.

a few lights, modem, router, weather station and a couple network switches all living off of a 15 amp circuit with lots of room to spare I believe. Sounds good.  Then I added 2 dedicated circuits with 10 gauge wire for all the audio gear and it has been noticeable in a very favorable way.

. . . and it might not be the multiple circuits and the 10 gauge wire that made the improvement . . . it might be all the crap that you got off of the audio circuit(s). 

But @curiousjim , I must ask:  how DO you know this??

@jumia  , now I am the one who is confused.  This, below, indicates that you have two multibranch circuits, not two dedicated circuits?

and while 2 dedicated circuits would be highly preferable I’m not sure existing multi branch configuration I have is achieving anywhere near what 2 dedicated circuits would achieve.

Then I added 2 dedicated circuits with 10 gauge wire for all the audio gear and it has been noticeable in a very favorable way.

@gs5556

Multiple receptacles on one dedicated circuit has the disadvantage of having multiple ground points, increasing the chance of ground loop hum. This is why it’s not a good idea to have one receptacle for each piece of audio gear.

I am not an electrician, but you have lost me on this: "Multiple receptacles on one dedicated circuit has the disadvantage of having multiple ground points"

If these outlets are on one dedicated circuit, they all connect to the neutral/ground bar, at the panel, on the same equipment ground wire and on the same neutral wire. Right?

If you had multiple dedicated circuits (one for each outlet, which is what I was doing in the past) THEN you would have "multiple ground points" (as you put it) AND multiple neutral wire connections. Right?

This is why it’s not a good idea to have one receptacle for each piece of audio gear.

So what are you saying the option is? Some kind of strip or a power conditioner? Aside from the possible benefit of ’power conditioning’, how are either of those any different than having "Multiple receptacles on one dedicated circuit"?