Dedicated 20 Amp Line for Audio

I recently had a room built for audio only (18 months ago? how time flies). My audio conscience electician wired a 20 amp dedicated line (less than 20 feet from the box) to a single outlet. I have a conditioner/distribution unit with all electronics hooked into it. My lights and electrostatic speakers are on a separate new line.

Happily, my house is the second one from the local transformer and I live in a residential neighbourhood far from any Industrial or Retail complex. Very little to zero line noise.

I am happy....

I ran 2 dedicated 20 amp lines with 10 ga wire from my breaker box.  Using some audiophile plugs.  The run is about 65 feet so opted for the larger guage wire.  If you can run dedicated lines, you won't be disappointed.  

Why a "dedicated circuit" when everything gets lumped together upstream of the comnpponent?  Separate line for digital?  Horse schlockey.  If the line goes through a fuse box with "analog" circuits, then the purpose is defeated.  If the dedicated line comes into the house seperately, then it will still be pary of a general cirsuit somewhere upstream without any filtration.   And there's typically enough RF in the air that using a separate circuit will still end up being a long radio antenna.

If an audio user really desires isolation, it might be better to get a hospital grade isolation transformer of sufficient capacity to handle .the equipment load  Or two.  Or three.  Whatever tickles your fancy.  Be careful to check the grounding across equipment in different transformers.