Electrical question re dedicated line


In my home situation(new house) the electrician who came by to install a dedicated line said it would be too difficult and very expensive. Another electrician said that I could have a dedicated line but it would be external and would travel accross the outside of my walls(insulated of course) and would have a little box for the receptacle outside of the wall on the wall. My question is that the fact that my system is on a circuit with it's own breaker, is that kind of like a dedicated line? The breaker my system is on has 4 seperate receptacles on it in my room but only my power regenerator(PS P500) is conected to one of those receptacles.In other words, all that is on the circuit that goes to the 4 receptacles in my listening room is my P500. The other receptacles are not in use. Is that kind of like a dedicated line? Would there be much advantage to doing what one electrician said was possible and have an externaly run dedicated line?
My system is :
Pass X250 amp
Pass X1 preamp
Talk Electronics Thunder3.1b CDP
Hales Transcenence 5's speakers
PS Audio P500 power plant
Shunyata Aries and Lyra interconnects and speaker cable
Prototype power cords which were not given a name but are good as I've compared them against Shunyata King Cobra V2 and Synergistic Designers Reference and much prefered the cords I have.
Any help would be valued. Thanks
128x128mitchb
Alraul,Oh sorry I did make a mistake in my description.
Both grounds are connected as like a grid, but the new rod is the closest ground to my gear and a ground wire leads from it to the main house ground.
That way the grounds don't interact or cause one to be the primary ground and sacrificing the other.
Peter
Peterd,

You're on safe ground! :-) I almost mentioned the use of multiple (but connected) ground rods but figured it would just complicate things. I did the same thing--when the cable company stopped using their ground rod, I connected it to the real ground rod with 6 gauge (I think) wire.

Al
Again deathgrip oulets. All amps on single phase preamps ect on other phase. If you need 220 you will need both phased obviouly. Run external ground rod for the ground prong 3rd wire. You will notice darker background in sound if equipment permits