Why manufactures don´t burn in their amps and ...

Rleff- I used to own a pair of Acoustat Model IIIs, and was just recently wondering if I would have heard any difference with some of the PCs I've got now. The voltage that electrostatics use is charging the speaker's diaphragm/membrane, and not providing gain to any kind of signal. That's one of the very few applications in which I believe would be hard to discern an improvement(No experience/just a guess). Then again- I've heard that Martin-Logan CLS's can be improved via upgraded PCs. You could plug those Kimbers into the SoundLABs,(before using them on the monoblocks) as an experiment(I would).

I think that's a great idea I think I will use the signal cables first and then try the kimbers next;thanks

Because they simply tend to 'UNBURN-IN'and that is logical..Next time find out for yourself when you buy a pair of new amps!! Run a varied signal through one of
them for 48 hours-no more needed. Then listen to it in
mono-carefully. Do not rush. Then listen to the unplayed one for comparison-in mono. Now unhook the first one and
place it in another room for 2 weeks. It will not sound
as good as it did before and not as good as the second
one you had been playing for 2 weeks. It is changed=
UN-Burned-in!

I'll change my stock powercords when audio engineers such as LFD's Dr.Bews and design engineers at Benchmark Media supply/sell ones they stand behind as providing sonic improvements with their products. Another words, very likely they'll be no powercord changes in my future (o:

You won't be hurting anyone but yourself, in having ripped yourself off for the musical rewards. Even the better recording studios have discovered the audible benefits of upgrading power cords/cables in the recording/mastering chain. I suppose that's just their imagination too?