How many dedicated lines?


I'm planning on running some dedicated 20 Amp power lines to my audio/home theater system. My question is how many separate lines should I run? I've heard of one audio system where every component practically had its own line. Is that overkill? Would two or three lines suffice for an entire system? In all, I have about 11 different components that need to be plugged in. Thanks for your help.
macm
The fewer the number of lines, the less risk you run producing ground differentials and loops which may induce hum into your system. My two channel audio system performs best on a single circuit.
I like the idea of dedicated lines with dedicated neutrals and isolated ground if possible.Use IG recptacles. If you don't have enough breaker space add a sub panel close to the gear. SDcambell's lay out sounded like it would be a good place to start. Go with 20 amp circuits. Up grading to a # 10 wire is fine though I personally find that a little extreme on runs less then 150'. But what do I know I'm just an electrician not an engineer.
It really depends on the draw of the units....
In an all audio system, I use two 30 amp dedicated lines, one for each big Krell amp. And, I then have one 20 amp dedicated line for the front end. This, in my opinion, is just right, or maybe a little overkill.
Even one dedicated line is the most cost effective upgrade I ever made.
As Bob (above) suggests, wire really is directional soundwise. I put in a sub-main and then ran four dedicated lines from the sub-main to four Hubbell duplex outlets.

Well the 60 ft. of stranded 6 ga. wire from the main to the sub-main was definitely directional. When run one direction, music was very soft and uninvolving, but when I reversed the wire and listened, music was much more live, dynamic and natural (BTW, I did this testing with this large wire out of the wall, ie before final installation).

I learned of this from Redkiwi, and just had to try it out. I'm a believer. Yes, 6 ga. wire is overkill, but I already had it. I also put in a dedicated ground from the sub-main, but am having a problem with my amps humming-- still working on that. I think Docroc gives good advice there. Good luck. Craig
I agree with Bob Bundus and his suggestion on how many and what type of lines to run. I am not sure I agree about break-in of AC power lines (call me a skeptic if you will) and definately disagree about an isolated ground due to code violation and safety issues. Ground has to be tied back to the box somehow. Legally you can not have 2 separate and isolated ground systems being feed by one service. At least not here in New York.