Advantage using one electrical leg for audio system?

What's the value in running separate neutrals to two separate breakers versus using a 2 pole breaker the shares a neutral coming back from two outlets. you still have two hot wires connected to separate 20 amp breakers.

Is it a noise issue?

It's unfortunate that they are not on the same leg, but is the problem here a noise issue? 

Thanks for the clarification, @jea48  .

NO..

Two 10/2 with ground Romex cables fed from single pole breakers fed from the same Line, Leg,... IS Much, Much, better than what you have now...

Actually I am presently running my gear on three runs of 12-2 fed from single pole breakers fed from the same Line, Leg.  I am still intending to get some type of strip that I feel I can live with to experiment with running off of only one circuit.

then is the way OP did it

 

preferable to running two circuits of 10-2 with two separate neutrals?

NO..

Two 10/2 with ground Romex cables fed from single pole breakers fed from the same Line, Leg,... IS Much, Much, better than what you have now...

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@jea48 , then is the way OP did it

The OP has a 3 wire multiwire branch circuit. He’s stuck with what he has. He has two separate circuits that must be fed from both legs that share a common neutral conductor.

preferable to running two circuits of 10-2 with two separate neutrals?

And on edit:  what would be the reason/advantage for using two runs of 10-3 vs two runs of 10-2?

If it bothers you, an electrician can probably move wires around in your panel to keep both lines on the same leg.

an electrician can probably move wires around in your panel to keep both lines on the same leg.

No he can’t... The OP has a 3 wire multiwire branch circuit. He’s stuck with what he has. He has two 120V separate circuits that must be fed from both legs that share a common neutral conductor. The neutral only carries the unbalanced load back the source. The balanced load is in series and fed by 240V.

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Yeah I meant a 2 Pole breaker. I'm just a dumb CPA.

Curiously, I've always thought that you need two romex 10/3 electrical wires for two dedicated circuits and that can be kind of expensive for longer runs and a pain to install.

But the idea of the electrician was to use one romex 10/3 (3 insulated wires and one bare ground) to support two separate circuits.  The two hot wires from the two outlets go back to each circuit of the tow pole breaker and the single neutal shares two outlets before going back to the neutral bar on the panel. And the ground going back to the panel is similarly shared to the ground connection in the panel.

The only problem is they're on alternating legs of the panel which may not be bad.

Put all the circuits with motors etc on the "other" leg. Or keep as is and switch every other breaker OFF. No forced heat or A/C for you.

Maybe cleeds will pay to have an electrician do it for you.

@jea  You know what he meant. I kindo liked it.  

The ground buss bars on either side of the breakers are connected, so how can there be two separate grounds.

If you have already listened to the system and don't detect any noise or ground loops, I wouldn't worry about it.

If it bothers you, an electrician can probably move wires around in your panel to keep both lines on the same leg.

2 lets with seperate grounds could lead to or contribute to a ground loop. I have both legs available so I put junk loads on one leg and important loads on the other.

PS  I use a bipolar breaker too since I also have a 240v outlet at my stereo location.