Advantage using one electrical leg for audio system?

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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@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?

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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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.

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?