@erik_squires Objective measurements have been made by Coherence Systems.
Just ask them. Do yourself a favor. The spectral analyses definitely reveal consistent signal boost across the board. I can say that acoustical sound level measurement reveal significant differences. The increased dB reading is minimum .25dB.
This is not "gobbledygook masquerading as technobabble". It is a real phenomenon backed by laws of physics. Perhaps the problem is you - and your inability to comprehend a concept or idea? Or is it ignorance?
"Harmonic resonators... where haven't I heard that a lot before in a hundred different ways... You can't resonate if you have nearly zero input/output. "
That is where you are wrong. This is not an input / output black box device.
It is a parallel device. A signal is impressed upon the AC line. From Fourier comes the harmonic series. This is what provides the driving force to resonate with signals.
"At best it sounds like Richard Gray's devices." So very, very different. There is no comparison sonically.
Like the Coherence Systems says, ADD-Powr are harmonic resonators - a new reference. A new reference for signal and dare I say, power conditioning! Whoa!
@ozzy +1. Well said.
@lxgreen Your experience is uncommon. The unit does work...it does effect a change to audio systems. If not, then either the unit was faulty, the installation was an issue, or there is an issue with the subject doing the listening and auditioning.