Dedicated line vs. power conditioner

I think both arguments are valid. A dedicated line will allow your system to draw current independent of the rest of your home. A wire can only carry a limited amount of current before it begins to heat up and limit the draw. This effect can be minimized by running heavy gauge lines directly from your circuit box.

However, this will do little to reduce the effects of noise on the line that a well designed power conditioner will address. I am currently using a balanced transformer with noise reduction (Furman) connected to a dedicated line near my breaker box. I then ran 4 separate lines from the Furman to my gear. The reduction in the noise level was very noticeable. I hope to soon begin experimenting with a PS Audio power plant to see if that will offer any benefits.

for bang for the buck, i heartily vote for the dedicated line. i paid less than $300 incl Hubbell 20amp sockets. I ran 4 dedicated circuits, one for amps, one for digital, one for analog front end, one for my preamp.

My Eletro friend installed two dedicated runs on two new breaker slots with a separate ground from the rest of the house. The improvements were detailed and amazing. He installed some of those Hubbell “orange” hospital receptacles and I even tried one of those costly WATTaGATE receptacles. I then tested a cheap Monster power 3000 to filter the front ends. I tried the amp into it but you can imagine the results. But the improvements on the front end was lifted again to another level. I then stated in with power cords; Synergistic AC Master Coupler, Harmonic Tech AC-11N, Sonic Horizon Skyline. And all exhibited marked improvements. ( If you question it, just remove it and listen to the same recording again ) Well, now I purchased a PS Audio PP300 and this was a huge jump in depth, clarity, focus, detail, background blackness. ( Not in that order, but you know )
Now, I cannot comment on how the sound was before the dedicated lines, but I would have done them no matter what. ( I was tired of watching the light bulbs in the house going to the beat of the music not to mention that I like that soft lighting that you only get with dimmers ) But I only needed the smallest Power Plant because I never intended to plug my amp into it. I have a reasonable amplifier ( Krell KAV-25a ) and it always sounds better plugged into the wall. And I have tried many a different filter, fuse, power conditioner, APC, line couplers. Maybe if I had one of those cute little SET amps I would consider a larger PP to be able to plug my amp into it. But I don’t see that happening. Not unless Dynaudio really makes a new direction. But I did add a nice filtered AC cord from the wall to the amp. The Synergistic sounded fair but I tried a Sonic Horizon Silver Moon which worked very well. I am sure that I could also have used a Whale or a Cobra or a Designer reference and probably have gotten good results. It just depends on what you hear when it is connected. I tried all three of the above mentioned AC cables but this one was the obvious winner. But at $500.00 it kind of hurt. But now I have no regrets. Except that I live in California and now having good clean power may not even be the issue.

MO (mostly as above): 1st you need the juice, plenty of it -- so, dedicated line(s). 2nd, when you HAVE juice, you "clean" it if you need to.
Good luck!