Suggestion for new panel/dedicated line

Thanks Zephyr24069, Do I actually need four EP 2750 for four dedicated circuits ?

I will be using one circuit for DAC/Preamp ( Duplex outlet), other circuit for amp. It will be one circuit dedicated for subwoofer and one of later expansion ( may be monoblocks).

I want to keep it in budget for now and not lose on performance.

Well, my requirements are specifying minimum that I need. If it requires 200A service/panel, I am absolutely fine with it OR if it is panel with 40 spaces, I am good.

Hi Martrixdude/Zephyr24069,

May I ask you guys what CH panel ( model) are you guys using ?

Thanks for reply.
I found an electrician to work with, installing CMBE4242B200BTS CH type panel this weekend.

About dedicated line
I am also planning for 4 dedicated circuit

a) Two of them ( very short runs, about 10 feet each) will be on "Cardas 3x10" in wall AC . I plan to put my DAC/pre-amp/amp on these two lines. Outlet are Oyaide R1 ( with face plate)
b) Romex 10/2 ( Southwire, from Lowe) for Third dedicated circuit will be used for Sub-woofer, ( 20 feet from breaker). Fourth will left be for future use. ( Hubbell 5262W )

Question: Do I need to run these wires in conduit ? City doesn't require it but are there any benefits of doing so ?

Any special breakers (AFCI/GFCI) ?
Ground wire AWG ?
Anything else should I know ?

Thanks

Thanks Zephyr24069 for detailed response and advice, I really appreciate it.

Few specifics about my project

This is going to be my main panel ( not sub panel), It is copper bus and I sent email to Eaton to check if there are bolt on breakers available for this panel.

About in wall Cardas, two of my runs are very short ( less than 15 feet together I guess from mains) so I can give it a try on those circuits at not so much expense)
For other two longer runs, I will use orange romex 10/2.

EP 2050/2750 will stretch my budget out of range right now but I will see if I, somehow, can manage it.

Thanks for advice on ground ref also, I will ask my electrician to make sure that they are same potential.

Phase I of upgrade is complete. My electrical panel is now upgraded to 200A CH type from Zinsco 100A.
My stereo's mid range is opened up quite a bit. Instrument separation is improved.

Phase II would be done tomorrow ( 4 dedicated circuits).
Two of circuits would be done with Cardas AC 10/2 , other two would use Romex 10/2.

Phase III would be installing EP 2500 on thursday.

I will update/report as my perception of it.

Thanks

Thanks Zephyr24069 for response.
My electrician was giving me about same quote for two/four circuits. I am currently using three, one for DAC/pre amp , other for AMP and last for subwoofer. Fourth is unused right now ( future proofing :-)

I ordered two EP-2750, one for DAC/preamp and other for Amp circuit.
I am also installing EP 2050.