Replacing generic RECEPTACLES

@elizabeth @lowrider57 ............Thank you both very much for all you replies... It really helped me see and understand so much more about electric wiring  and breaker boxes.. Now when i looked at my breaker box my quad 20A breaker for my amp and preamp is on the bottom of leg 2. When my electrican comes and installed my other 20A dedicated line for my CDP should i tell him to relocate the 2  20A dedicated audio lines to the top leg 2 of the breaker box ?

correction ...Not quad 20A breaker... quad 20A receptacle. 

I do not know if moving the wires in the box would actually matter. Sorry I cannot advise you on that.

First, you're lucky to have all new wiring giving your panel clean connections. Mine is old, that's why I have a new subpanel.

The best position for the audio breakers is away from the high current appliances such as refrigerator, furnace,  A/C, hot tub. I think you should try to have some space between the audio circuits and these appliances. Since it's newly wired it should be easy to relocate a breaker or two. My electrician moved some breakers to install the subpanel.

Imagine your amp, preamp breaker sits next to the refrigerator or A/C. Those appliances are always running, sending noise down the line to their connections plus your audio breakers. In this case, you would either move the audio breaker or move the appliance breaker.

@elizabeth @lowrider57 ...Thank you guys ....... I will have my electrician see what he can do about moving the audio breakers or appliance breakers while he adds the new dedicated 20A line. So you are also suggesting the audio breakers be on the top of the leg and high current appliances below .....