Basic electrical questions.

I just had a new audio room wired and brought in two 20 amp dedicated lines to PS Audio Power Port receptacles for amplifiers and two 15 amp dedicated lines with hubbell receptacles for other electronics. It may be a little overkill but I only wanted to do it once.

Dedicated lines are a good thing... but not the best solutions of and by themselves.

Dedicated lines merely limit added issues from the rest of the household. remember, ultimately, the neutrals and grounds are tied together. Even still, dedicated is good.

I have 4 dedicated 20A ckts, but use mainly 3 of them. I put better outlets on those 3 too. Nothing fancy, just hospital grade.

Power conditioning, passive or active works. Current and bandwidth limitations are noteable items to look for when selecting the type you desire.

I use passsive filtering/conditioning on all my main rig devices. preamp, power amps, sources, etc. Albeit, different filters for sources than for power trains.

Many do plug amps right into the dedicated wall sockets. Better? Try that first and see how you like it... then add a conditioner of sorts. Then you will actually know what's best for you and your gear.

Lots of ways to go here. Many roads lead to Albuquerque... or is it Rome.

My house has the old two prong outlets, so i'll have to change those out.I know i could use a cheater plug, but i'd rather put in new outlets. I checked the breaker panel and there aren't any extra breakers,so that does that mean i need a new breaker panel in order to install new lines?

3 prong 15 amp outlets are under a buck a piece - 20 amp outlets are about $5 each.
You will need a sub panel to run your dedicated lines.
While you're at it: You may also want to run another dedicated line to run your TV/AV/HT system in another room.
If you're using monoblock amps - 3 dedicated lines would work best - 1 for each amp & 1 for a power conditioner.
All the best

Can someone offer either a technical explanation, or at least some persuasive anecdotal evidence, to explain the claim that running multiple dedicated lines to the different components of a single system is beneficial. As I indicated in my earlier post:

"I'm uncertain about the concept of having multiple dedicated lines for different parts of the system. I would be concerned that voltage offsets could be introduced between the grounds of the different components, which could lead to ground loop noise. Same goes for having parts of the system on a surge suppressor, and other parts of the system on a different suppressor or no suppressor -- the result would be some degree of isolation between the ac grounds of the different components in the system, at least at high frequencies, due to inductive filtering in the suppressors, and inductance in the house wiring, which might cause ground loop issues."

Regards,
-- Al