The type of power cord will not effect the sound. It is only there to charge the electrostatic panel. Don’t call David Janszen and ask him about it, he will laugh at you. I own the Janszen zA2.1 speakers.
KLH model 9 electrostatic Speakers
I just bought the above speakers, I like them a a lot , I am thinking if it’s possible to replace the power cord on the power supplies. On this speakers? Thanks B