Effects Of Power Cords On Electrostatic Speakers

Yes. To the best of my knowledge.

I upgraded their average Xovers inside which made a substantial increase 

across the board , and a good power cord which we used AQ Thunder 

made a additional increase in fidelity through a AQ Niagra 5000 power conditioner .

electrostats are very sensitive to changes.I no longer own them I also owned the ML Evolution with the powered Bass , as with most speakers in mean 90% in truth go cheap on Xover parts inside . I have for the last 20 years always looked to see 

what mess they offered ,Maggi worst junk out there , those steel inputs pathetic mass os resistance fifty cent resistors and junk capacitors , Klipsch is another one 

I have owned 3 models of each ,sad but truth ,since the Xover is the ♥️ of all loudspeakers, and Xover less doesnot cut it ,no one driver can do everything 

having owned a Audiostorefor a decade and 40 years in Audio 

rule of thumb 25% on average goes into your speakers or electronics including packaging ,the rest R&D overhead and markup ,unless you are spending $$ expect average parts at best inside your product ,$$ is the driving force 

even in $50 k loudspeakers not even close to the best Xovers like Duelund 

and on any SE models they charge 4-1 in $$markup in parts ,

cables far more markup. Just to inform others .research inside your product or go to  Google    Images to possible see what’s under the hood.

Expectation bias.

I found the same thing with my Xstatics when I changed from the stock power cables to audiophile cables (Mark Tunis Black Magic cables).   I attributed the improvements to stabilizing and lowering the noise floor of the stators.   Whatever the actually reason, I liked the difference and I’m not switching back (though I did test this to make sure I wasn’t making things up).

You can make up all the reasons you want, but the truth is you heard a difference because you wanted to hear a difference.  Just like the people who hear a difference when they "upgrade" the power cord on a turntable.  What's next?  Upgrading the power cord on your lava lamp?