I need advice for power cords


In my system there are 4 components that power cords are interchangeable.  They are PrimaLuna EVO 100 Tube Preamplifier, PrimaLuna EVO 100 Tube DAC, Manley Chinook phonostage and Dayton Audio sa1000 subwoofer amplifier.   Should they all be upgraded, if not all which one to change to give me the most improvements.  I can't go crazy on cost, 1k to spend.   I've followed along with many threads on this subject. Always looking to make improvements to sound quality.   Many of you have much more experience with cables than I do so what do you recommend and I can do the research.  On a side note my McIntosh MC75's are vintage so old thin manufacturer cables and probably shouldn't change them. 

Thanks 
Mike 
zardozmike
Dimora has it exactly right: A $5,000 power cord is limited by your house wiring, no matter what claims might be made by the manufacturer. A case could be made for ultra-expensive cords if; and only if, you run them all back to a dedicated power panel, connected directly to the drop lines from the street to your house.  Even then, utility AC power can often leave much to be desired in terms of stability and line noise. If you live in a condo or apartment then you’re out of luck in that regard. A much better idea is build your own cords as Dimora suggests, use hospital grade plugs; change the wall outlets to hospital grade; and, if you own your place, run a dedicated circuit for your system inside metal electrical conduit or copper mesh sleeving (conduit probably both better and cheaper) grounded at the panel end for noise shielding; and above all, invest in a good power conditioner. 
bobedwards101
A $5,000 power cord is limited by your house wiring, no matter what claims might be made by the manufacturer.
That’s an interesting claim. Have you ever tried a premium power cord? Or, are you so convinced that it wouldn’t make a difference that you allow your expectation bias to prevent you from experimenting?

Expectation bias can be a very powerful thing, especially for those who think "reason" makes them immune.
After owning far too many uber expensive cables...more is definitely not always better.  For power cords that is most evident.  Results will vary with equipment used of course, but $ don’t  equal 😁
I have a question/request.....those with extreme voodoo opinions/statements re power cords, fuses, cables, only @ full moon hi rez uploads, wooden blocks under cables (not env.friendly, you know that?), etc etc....so, pls tell me that in your professional lives you do not fly commercial planes, do not perform medical surgeries, you are not neuro surgeons, operators of NORAD stations, financial advisers (actually, I pass this one...), school bus drivers, operators of heavy eq., nuclear plant operators...etc etc...pls say - you are not...otherwise our society is in a great risk of a total collapse...
Thank you
Well kozka, you have made 4 posts in 9 days in your AudiogoN career. I am curious, when do the creative, thoughtful and insightful ones appear?