Dedicated 20 amp lines/should i use a sub panel

New house, ran 4 separate 20 amp circuits to 1 of the main panels. I asked my electrician and he thought that would be best. No hum or issues and have plenty of power for anything I want to use

When I did my Listening room installation, I moved most the rest of the house circuits to a separate sub-panel - but I needed the space breaker wise.  If  you don't need the space just use your existing panel, but have your electrician tighten up all connections.

I ran 12/2 to the outlets but the longest run is only 20 feet of wire,  I have 9 dedicated lines, one leg of the incoming power is used for the tubed system,  4 circuits.  The other is for my SS system,  5 circuits including a 220V one.

I don't get caught up in the Outlet craze - use Leviton Industrial grade outlets.

Running separate dedicated lines will be the single most $ efficient upgrade to your system you can do, the second one will be room treatments.

Good Listening

Peter

Looks like I should expedite my plan to rewire the power cords on the power amps with new OFC cables including connecting the safety ground. I’ve been meaning to do it after changing the power cord on the preamp with very positive results. Thank you.