Dedicated Lines - Sub panel or no?

Go with the sub panel, as it will allow room for potential add on later.
Never know how many lines the future may need :-)

I use a subpanel but my requirements are unique.

I have 3 amplifiers (2400W combined) for stereo. Much of that in class A.

I supply a large step-down transformer with 240V for balanced AC output for 2 of the amps.

A TVC line stage provides galvanic isolation between the CDP and amps. There can be different voltage between legs which can cause noise but that has not been an issue in my case.

I have the subpanel/transformer located in a closet directly behind the equipment.

The origional main panel is obsolete and breakers are no longer available.

I was able to run 6/3 wire through the crawlspace.

I rent.

I think the comment by Liquid Hi Fi is very valid and should be a major factor in your decision. You provide a foundation for future upgrades in vital power supply area.

Mick, I have tried both of your options and found locating a subpanel just outside the room vs next to the main panel by far the easiest and least expensive. Once your subpanel is close at hand, it is quite simple to run separate dedicated and star grounded circuits to each component which minimizes any interaction between them (see diagrams in my system).

Plus, by putting the subpanel on an 4kva iso transformer, I found it eliminated the need for separate or multiple power conditioners, eliminated any possibility for ground loops, and minimized the need for exotic and expensive PCs.

I assume you have a fairly simple way to route the power line to the subpanel and a way to hide the subpanel in the room? If you do explore the iso transformer, be aware that they to make an audible humming noise that would need to be taken into account.

Hi all,

Thanks everyone for your responses.

Zargon, I am intrigued by your mention of using a transformer. Does it have any downside? I have found in the past that, in my system, power conditioners flatten the soundstage, or somehow rob the music of life.

Also, over here in Singapore, we are 220-240volts AC. If I was to follow your setup, would that in any way affect the topology?

Kind Regards
Mick