Dedicated lines- need break in?

Jea48 wrote:

"isolated grounds.?

Do you mean connected to an earth ground other than the main earth ground of the main electrical service? "

No It is connected to same ground at the panel. The electrician said isolated means isolated from other grounds down stream of main panel.

The phase change did make the lines ultra quiet. Among few pluses to the sound at first listen: Increased liveliness, dynamics and jump factor, minimum grain, more focus. Minuses: slightly smaller images, less warmer than before (I had almost zero unnatural highs)

Well, Thanks for all the responses. Both for break-in and not. Thanks for the fun guys. Like I said I expected this to be considered by many a stupid question of the day ;-) I researched the archive and did not find anything about dedicated power lines break-in so I thought worth asking your experiences. Of course, I tend to believe credible answers are the ones from those who have dedicated lines installed and went thru 'learning/listening" experiences first hand.

I do believe in cable break-in (for reasonable amount of time) and thought the brand new wires probably need run in time.

Oh well, I still have my 15 amp regular outlets to fall back to get my original perfect sound back. I will let new lines burn in though for a week or so, just to find out (for $$$ total costat least I should give it a try- those Oyaide outlets and front machined Alum plate ain't cheap , nor the lines install cost)

I will report back.

Keep the responses coming. Happy New year to all.

Bill, I did install the 'audio grade' face plates along with duplexes.
I am sure your comment is tongue in cheek as usual. I happen to buy two duplexes and the audio grade housing and the 'composite' face plate about a year and half ago when I really wanted to install the dedicated lines during my house remodeling, but somehow project schedule and budget made this one of the last priority, so I had this Oyaide stuff laying around.... The housing, plate and duplexes sure do look great though. The Al mounting plate, black composite face plate and burgundy duplexes goes well with Ralph Lauren Silver Metallic paint ;-)

Shellie, I got two 50 ft extension cords and hooked up fan/heaters with both intending to run 24/7 (well, almost) , heaters/fans in my garage. So may be I will be able to go a little longer than a week, may be later hook up my TV or something for a while on this 20 amp lines to let it keep breaking in. Meanwhile I will continue to listen to my old 15 amp lines.

Jea48, I did connect one pair to regular 15 amp line (prior to the new 2x20 amp dedicated lines install) for a day or two- just to power source and preamp, not amp. Sound was virtually unchanged, if a tad bit warmer. BTW, Thanks for the link on the cable break-in phenomena. The opinions and experiments by some the big cable cos were interesting and informative read. The mechanism described there in makes a lot of sense. I did not know Sarajan used to write reviews for Soundstage.

Why would a dedicated line-15 or 20 amp- sound (significantly) better than regular shared lines? The usual reason given: 'noises' bled thru from other equipment on same lines/circuits corrupts audio signal. What freq spectrum this corruption impact? Low, mid, high or all across the band?

Thanks for the tip, Rwwear. Yes, I am using heavy duty cords (Orange) and turn them off during night and when no one is around. It might take a bit longer but a lot safer.