Power cord replacement suggestions

Got that covered, tls49. Have 2 10 guage runs from panel to 20 amp hospital outlets. So i want to start with one aftermarket power cord as a step closer to insanity. And to all , thanks for the input.

IMHO, I would replace the main power cord to the system first. Install at least one, preferably two, dedicated lines from the breaker box to upgraded outlets at the system. It is better to use upgraded component power cords with dedicated lines than daisy chained AC wiring to a $0.97 wall outlet.

I've found that (in general) components that have lower quality power supplies can show more discernible improvements than those with extremely high quality power supplies.

Today's electronics are capable of pretty good resolution, but the more "cost effective"  power supply used in the more affordable components tends to reduce their capabilities. A good power cable will augment a less capable power supply and benefit the components overall performance.

e.g. my Bifrost DAC, with a small transformer,  achieved considerable improvement, whereas my NAIM amp, which has a large transformer, showed little improvement when using the same "quality" power cable

Regards...

Amp and preamp are a good starting point.  Also remember that a single brand or model will not be ideal for all the components.    

I would imagine that it would depend on the component and how much resolving power it has.

My experience is that power cord changes on the preamp and phono preamp had the most effect, however you experience may be different.