AC POWER DISTRIBUTOR/POWER CABLE VERSUS DEDICATED

Any licensed electrician will know what to install. Are you sure you're not doing this yourself ? If you are, be careful you don't burn your house down!

10-09-15: Yogiboy
A dedicated 20 amp (2400 watts) circuit is more than enough for
anything you would ever use ... One amp = 120 watts,so you can do the math and
you will see that you will never need any more than that.

Oh no, this is completely mistaken. That's because no amplifier is 100% efficient. Look at a Bryston 4B amp, for example. This nominally a 300W/channel amp, but it draws 2100 watts of AC when driven hard at 4 ohms. So if you're running high-power amps, you'll want a 20A dedicated line for each, plus at least one more line for your source components.

Cleeds, I stand corrected. That Bryston sure draws lots of current !

I will have an electrician do the install. The question remains : do I tell the electrician to use a certain kind of electric cable?better than cable that is regularly used ?
Thoughts?
Thanks

The standard 20 amp 12 gauge Romex cable is what the electrician will use.