KLH model 9 electrostatic Speakers

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.

I used a 25 watt PP tube amp with my KLH Nines successfully! Now have a Futterman H3 25 wpc OTL tube amp!

Jason , Gordon Holt power requirements recommendations is between 35 w and 75 w, my viva is 17w, ok on low volume, my art audio is 40 w this tube amp gives me more dynamic, extensions and nice bass and slam, Gondon is right.

There is absolutely NO benefit to replacing the stock power cords - contrary to what the neurotically obsessed will claim!

So true, replacing power cords will do sweet *.* to the sound.
As the current draw is so miniscule even a AC plug packs were enough to power the later Accustats ESL's

Cheers George

So far on cables I get Just a little bit improvement, with the nines do make big changes on every amps  I tried.