Dedicated Circuit

@ jea48,
Thanks very much, I really appreciate the detailed response and learned a great deal. So when my electrician installed the 20amp circuit breaker it is in fact right below two other 20amp breakers for the air conditioning units 20amp breakers,(two of them).
So should this be moved to the other leg or down further with separation between them? I think when these guys work they like to keep things all together nice and neat.

So when my electrician installed the 20amp circuit breaker it is in fact right below two other 20amp breakers for the air conditioning units 20amp breakers,(two of them).

120V window air conditioners? If yes one is fed from the same Line as your dedicated circuit and the other A/C unit from the other Line in the electrical panel.

I wouldn’t have installed the breaker for the dedicated circuit directly below the two A/C breakers.

With that said.....

Is the dedicated circuit for your audio system picking up noise from the two A/C branch circuit breakers? Maybe, maybe not. Depends on the quality of the electrical components used in A/C units. Can you hear any difference from your audio system when the compressor in the two units cycle on and off?

I guess you could try listening some late evening, when it has cooled down outside, to your audio system with the A/C units turned off. Then listen again with them turned on. Have someone else turn them on so you can listen to your audio system when they are powered up.

jea48,
so I just looked at the breaker panel again. The dedicated circuit is right below my mini-split air conditioning breakers which are dual 30amp. Haven’t used the air yet this year (chilly New England) so not sure If it will generate any noise.
If it does, bummer, have to get electrician back here. Tried to do my homework but should have talked to you first :-(
thanks for your expertise!