AC wizardry – Bill Stierhout—inventor of QRT Quantum Resonance Technology sold to Nordost in 2008 where it continues to be marketed and also inspires current Ansuz analog dither tech—now operates new company AddPowr to further develop his unconventional ideas. His products are described as harmonic resonators not AC conditioners because they work in parallel not series and induce deliberate algorithm-derived super-low-frequency EM fields and line harmonics via conduction or radiation. These add-ons start at $149 for the eau2 and top out at $4'000 for Sorcer X4. No components plug into any of them. This stuff just occupies a power receptacle and does its mysterious work from there. Take a look if that has you curious.