I haven’t gone through the entire thread here, just a few pages. I’ll read the whole thing when I have the time. I have two of these devices. I got mine from Nobsound/Douk Audio because they are a reliable retailer of Chi-fi that actually quality controls and ensures the products are built to spec (unlike the chances you take on Amazon etc). Costs a bit more.
https://doukaudio.com/products/7-83hz-schumann-wave-resonance-ultra-low-frequency-pulse-generator-sleep-relax
Yes, they definitely work, the improvement is quite evident to me. I suspect they work really well in systems that are setup properly with good grounding, power filtration etc.
I know someone that works in the power industry, solving big problems and designing power delivery systems. They are not just an engineer, but someone that understands the actual physics behind AC electricity, electric circuits etc. they referred me to the resonator and told me to try it. Their explanation is quite a bit different than others I’ve heard. It goes as follows (if I can represent this well):
The resonator creates an active ground plane around the resonant point. In these boxes it more or less expands about 4 feet in every direction. This ground plane couples with your electrical ground or anything nearby that might act as a ground, and shunts all excess RF energy to that ground. The frequency range it covers is from lower Hz frequencies (30hz and up) up into gigahertz ranges. So excess noise in electrical circuits can be pulled to ground, interference etc. They say that the ground plane takes a while to setup, interacting with magnetic, electrostatics and power fields around it until it reaches equilibrium which can take a number of days to become truly stable and sound its best.
I’ve found one of the best places to put a box is on top of my power conditioning stack, seeming to supercharge the ability to clean up the power before it gets to my gear. I love it on the top of my DAC too which is almost 5 feet high with other components below it. I have another I will be putting in my system shortly to see if it further improves things.
One other thing I have found is that if you are putting right on top of a component, where it sits can dramatically shift tonal balances. An inch or two can make it bright and hard vs softer and liquid. This goes away when its further from the component. And if on a component it should be where the transformer is, and that can be why the balance can change.
